diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 40993b6a..d0b731f5 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,27 +1,41 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: 9260cbc9c84c06022993bfbcc42fdbf0305c5b8e
+    rev: v4.6.0
     hooks:
+      - id: check-yaml
+        exclude: ^(conda\.recipe/meta\.yaml|conda_build/templates/.*\.yaml|docs/click/meta\.yaml|conda/meta\.yaml|conda/construct.yaml|.*\.pic\.yml|conda/constructor/Miniforge3/construct.yaml)
       - id: end-of-file-fixer
       - id: trailing-whitespace
-      - id: requirements-txt-fixer
+  - repo: https://github.com/kynan/nbstripout
+    rev: 0.7.1
+    hooks:
+      - id: nbstripout
+        files: ".ipynb"
 
-  - repo: https://github.com/psf/black
-    rev: 25d886f52c2bbbb58386ac8050f4e67952507bc7
+  - repo: https://github.com/codespell-project/codespell
+    rev: v2.2.6
     hooks:
-      - id: black
+      - id: codespell
+        additional_dependencies:
+          - tomli
 
-  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: "6a0ba1854991b693612486cc84a2254de82d071d"
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: "v0.4.1"
     hooks:
       - id: ruff
+        args: [ --fix, --exit-non-zero-on-fix ]
+      - id: ruff-format
+
   - repo: https://github.com/macisamuele/language-formatters-pre-commit-hooks
-    rev: v2.10.0
+    rev: v2.13.0
     hooks:
       - id: pretty-format-toml
         args: [--autofix]
-  - repo: https://github.com/kynan/nbstripout
-    rev: e4c5b4dcbab4afa0b88b7a9243db42b1a8d95dde
+
+  - repo: https://github.com/aristanetworks/j2lint.git
+    rev: v1.1.0
     hooks:
-      - id: nbstripout
-        files: ".ipynb"
+      - id: j2lint
+        types: [file]
+        files: \.(j2|yml|yaml)$
+        exclude: .github/.*
diff --git a/docs/notebooks/00_layout.ipynb b/docs/notebooks/00_layout.ipynb
index 4957ff67..96e9b140 100644
--- a/docs/notebooks/00_layout.ipynb
+++ b/docs/notebooks/00_layout.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "9a27187a",
+   "id": "0",
    "metadata": {},
    "source": [
     "# Layout\n",
@@ -13,7 +13,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1e2dfd9b",
+   "id": "1",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -25,7 +25,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "5ff8f212",
+   "id": "2",
    "metadata": {},
    "source": [
     "## Fixed Component cells\n",
@@ -36,7 +36,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "cff0d620",
+   "id": "3",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -47,7 +47,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1275e6a7",
+   "id": "4",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -58,7 +58,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "83c885a0",
+   "id": "5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -69,7 +69,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7c185343",
+   "id": "6",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -80,7 +80,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6a235259",
+   "id": "7",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -91,7 +91,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8af49e8a",
+   "id": "8",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -101,7 +101,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ccfae4d2",
+   "id": "9",
    "metadata": {},
    "source": [
     "## Parametric Component PCells\n",
@@ -112,7 +112,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7bff697c",
+   "id": "10",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -123,7 +123,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "3891d5ac",
+   "id": "11",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -134,7 +134,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "5179d03b",
+   "id": "12",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -145,7 +145,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "57e8b0f0",
+   "id": "13",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -156,7 +156,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "a962eb0a",
+   "id": "14",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -167,7 +167,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "d1d9634e",
+   "id": "15",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -178,7 +178,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "d348c4c8",
+   "id": "16",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -188,7 +188,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f3a3e792",
+   "id": "17",
    "metadata": {},
    "source": [
     "## Components with grating couplers\n",
@@ -199,7 +199,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6103f4cc",
+   "id": "18",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -211,7 +211,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "fe809f5a",
+   "id": "19",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -222,7 +222,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "9e824506",
+   "id": "20",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -234,7 +234,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "e291dcf7",
+   "id": "21",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -245,7 +245,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "61e47076",
+   "id": "22",
    "metadata": {},
    "source": [
     "## 3D rendering"
@@ -254,7 +254,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "a4c9f5cb",
+   "id": "23",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -264,7 +264,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "420144d7",
+   "id": "24",
    "metadata": {},
    "source": [
     "## Die assembly"
@@ -273,7 +273,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "4daec89a",
+   "id": "25",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -326,7 +326,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1ed290ae",
+   "id": "26",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -372,7 +372,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "581be784",
+   "id": "27",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -401,7 +401,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "f64b8df0",
+   "id": "28",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -434,7 +434,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "525a1c3e",
+   "id": "29",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -460,7 +460,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "24c91ab4",
+   "id": "30",
    "metadata": {},
    "outputs": [],
    "source": []
diff --git a/docs/notebooks/11_sparameters.ipynb b/docs/notebooks/11_sparameters.ipynb
index 96dc13bf..38d55790 100644
--- a/docs/notebooks/11_sparameters.ipynb
+++ b/docs/notebooks/11_sparameters.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "ec56317b",
+   "id": "0",
    "metadata": {},
    "source": [
     "# Component FDTD simulations\n",
@@ -14,7 +14,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "d6c52ae2",
+   "id": "1",
    "metadata": {},
    "source": [
     "Meep is open source, so you won't need a license, but for tidy3d or Lumerical you'll need to have a license.\n",
@@ -31,7 +31,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "eee58fc5",
+   "id": "2",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -45,7 +45,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7ea17912",
+   "id": "3",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -56,7 +56,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "aef763d9",
+   "id": "4",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -66,7 +66,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "97685b47",
+   "id": "5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -76,7 +76,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "e950a444",
+   "id": "6",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -86,7 +86,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "c4186d09",
+   "id": "7",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -96,7 +96,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "430416f2",
+   "id": "8",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -105,7 +105,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ef830dfa",
+   "id": "9",
    "metadata": {},
    "source": [
     "## Lumerical FDTD\n",
@@ -115,7 +115,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "8042e020",
+   "id": "10",
    "metadata": {},
    "source": [
     "To run simulations uncomment the following lines"
@@ -124,7 +124,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "10ee1b6b",
+   "id": "11",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -136,7 +136,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "f9bb4cff",
+   "id": "12",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -157,7 +157,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "5770b2f0",
+   "id": "13",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -167,7 +167,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "f16de245",
+   "id": "14",
    "metadata": {},
    "outputs": [],
    "source": [
diff --git a/docs/notebooks/11_sparameters_gratings.ipynb b/docs/notebooks/11_sparameters_gratings.ipynb
index dcda1dfe..26602e21 100644
--- a/docs/notebooks/11_sparameters_gratings.ipynb
+++ b/docs/notebooks/11_sparameters_gratings.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "ae73677e",
+   "id": "0",
    "metadata": {},
    "source": [
     "# Grating coupler FDTD simulations\n",
@@ -17,7 +17,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "35dbffc3",
+   "id": "1",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -35,7 +35,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6ad9cf15",
+   "id": "2",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -49,7 +49,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "fbf6ee2a",
+   "id": "3",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -60,7 +60,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "666a4c36",
+   "id": "4",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -76,7 +76,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8f188d5d",
+   "id": "5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -87,7 +87,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "eb904eb9",
+   "id": "6",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -109,7 +109,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "5cf70004",
+   "id": "7",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -119,7 +119,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "ca02dea5",
+   "id": "8",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -147,7 +147,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "e3cd5169",
+   "id": "9",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -157,7 +157,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "285f61c1",
+   "id": "10",
    "metadata": {},
    "outputs": [],
    "source": []
@@ -165,7 +165,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1e483fdd",
+   "id": "11",
    "metadata": {},
    "outputs": [],
    "source": []
diff --git a/docs/notebooks/12_sim_plugins_tidy3d.ipynb b/docs/notebooks/12_sim_plugins_tidy3d.ipynb
index 791e35ef..06200345 100644
--- a/docs/notebooks/12_sim_plugins_tidy3d.ipynb
+++ b/docs/notebooks/12_sim_plugins_tidy3d.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "858e2776",
+   "id": "0",
    "metadata": {},
    "source": [
     "# Circuit simulations (tidy3d + SAX)\n",
@@ -20,7 +20,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a888aa47",
+   "id": "1",
    "metadata": {},
    "source": [
     "## tidy3d FDTD simulations\n",
@@ -37,7 +37,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "62bbb0fc",
+   "id": "2",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -52,7 +52,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "51cc610b",
+   "id": "3",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -63,7 +63,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "9fad97fe",
+   "id": "4",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -73,7 +73,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "d5c9218a",
+   "id": "5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -83,7 +83,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8bb8bc8b",
+   "id": "6",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -92,7 +92,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b65bd15c",
+   "id": "7",
    "metadata": {},
    "source": [
     "## Circuit simulation\n"
@@ -101,7 +101,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "c93e9644",
+   "id": "8",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -112,7 +112,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "3379d1dc",
+   "id": "9",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -127,7 +127,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "5cd4e2ad",
+   "id": "10",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -143,7 +143,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "a34d0b8f",
+   "id": "11",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -153,7 +153,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6cd95df3",
+   "id": "12",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -171,7 +171,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1a68660b",
+   "id": "13",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -189,7 +189,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6a130b05",
+   "id": "14",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -200,7 +200,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "d989144f",
+   "id": "15",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -218,7 +218,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "083e45ef",
+   "id": "16",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -236,7 +236,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "c4c38679",
+   "id": "17",
    "metadata": {},
    "outputs": [],
    "source": []
@@ -244,7 +244,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "c5e44e25",
+   "id": "18",
    "metadata": {},
    "outputs": [],
    "source": []
diff --git a/docs/notebooks/14_sax_tidy3d.ipynb b/docs/notebooks/14_sax_tidy3d.ipynb
index d89a883c..b119c296 100644
--- a/docs/notebooks/14_sax_tidy3d.ipynb
+++ b/docs/notebooks/14_sax_tidy3d.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "a5ddc7f6",
+   "id": "0",
    "metadata": {},
    "source": [
     "# SAX circuit simulator\n",
@@ -21,7 +21,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "4880dc93",
+   "id": "1",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -39,7 +39,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "b062aeb3",
+   "id": "2",
    "metadata": {},
    "source": [
     "## Scatter *dictionaries*\n",
@@ -60,7 +60,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7bfe139e",
+   "id": "3",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -83,7 +83,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6a5e26de",
+   "id": "4",
    "metadata": {},
    "source": [
     " it can still be tedious to specify every port in the circuit manually. SAX therefore offers the `reciprocal` function, which auto-fills the reverse connection if the forward connection exist. For example:"
@@ -92,7 +92,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "2e01d762",
+   "id": "5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -110,7 +110,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "66f9611c",
+   "id": "6",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -123,7 +123,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "d124c4b8",
+   "id": "7",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -146,7 +146,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "246f2915",
+   "id": "8",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -165,7 +165,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "785f3311",
+   "id": "9",
    "metadata": {},
    "source": [
     "### Waveguide model\n",
@@ -175,7 +175,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "799b714c",
+   "id": "10",
    "metadata": {},
    "source": [
     "Lets compute the effective index `neff` and group index `ng` for a 1550nm 500nm straight waveguide"
@@ -184,7 +184,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7154f46a",
+   "id": "11",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -205,7 +205,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "bd892419",
+   "id": "12",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -216,7 +216,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "2637cb51",
+   "id": "13",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -227,7 +227,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "d2b93380",
+   "id": "14",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -237,7 +237,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "17a63859",
+   "id": "15",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -248,7 +248,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "dd412631",
+   "id": "16",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -257,7 +257,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ae02c9d8",
+   "id": "17",
    "metadata": {},
    "source": [
     "### Coupler model\n",
@@ -268,7 +268,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "5e3ef4db",
+   "id": "18",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -279,7 +279,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6a893dd3",
+   "id": "19",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -302,7 +302,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "30028ba5",
+   "id": "20",
    "metadata": {},
    "source": [
     "For a 200nm gap the effective index difference `dn` is `0.026`, which means that there is 100% power coupling over 29.4"
@@ -310,7 +310,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "befd3544",
+   "id": "21",
    "metadata": {},
    "source": [
     "If we ignore the coupling from the bend `coupling0 = 0` we know that for a 3dB coupling we need half of the `lc` length, which is the length needed to coupler `100%` of power."
@@ -319,7 +319,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "4d98669c",
+   "id": "22",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -329,7 +329,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "6ce5de4e",
+   "id": "23",
    "metadata": {},
    "source": [
     "## SAX gdsfactory Compatibility\n",
@@ -341,7 +341,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "2ccc6900",
+   "id": "24",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -352,7 +352,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6173c48e",
+   "id": "25",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -364,7 +364,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f350989b",
+   "id": "26",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -381,7 +381,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "c4dda9a8",
+   "id": "27",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -414,7 +414,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "55460623",
+   "id": "28",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -424,7 +424,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1e22abd5",
+   "id": "29",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -444,7 +444,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "89e8ed0c",
+   "id": "30",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -455,7 +455,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "c617f3df",
+   "id": "31",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -475,7 +475,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "fe3a989f",
+   "id": "32",
    "metadata": {},
    "source": [
     "## Heater model\n",
@@ -486,7 +486,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "520e4967",
+   "id": "33",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -498,7 +498,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "3fa74215",
+   "id": "34",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -563,7 +563,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "fd264a37",
+   "id": "35",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -577,7 +577,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7dc353fc",
+   "id": "36",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -595,7 +595,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "96b578f9",
+   "id": "37",
    "metadata": {},
    "source": [
     "Now you can tune the phase shift applied to one of the arms.\n",
@@ -608,7 +608,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "af851a66",
+   "id": "38",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -617,7 +617,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "daf10d1d",
+   "id": "39",
    "metadata": {},
    "source": [
     "As you can see the top phase shifter instance `sxt` is hard to see on the netlist.\n",
@@ -627,7 +627,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "0601625c",
+   "id": "40",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -638,7 +638,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1cc500be",
+   "id": "41",
    "metadata": {},
    "source": [
     "The best way to get a deterministic name of the `instance` is naming the reference on your Pcell."
@@ -647,7 +647,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "42a87509",
+   "id": "42",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -671,7 +671,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "60e9c50d",
+   "id": "43",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -688,7 +688,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "0e48c3ec",
+   "id": "44",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -705,7 +705,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "e0169c8f",
+   "id": "45",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -731,7 +731,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "f79bee28",
+   "id": "46",
    "metadata": {},
    "source": [
     "## Coupler sim\n",
@@ -742,7 +742,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "6fc89f62",
+   "id": "47",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -753,7 +753,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "a45a31ca",
+   "id": "48",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -765,7 +765,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "7212f716",
+   "id": "49",
    "metadata": {
     "lines_to_next_cell": 2
    },
@@ -778,7 +778,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "13eac70b",
+   "id": "50",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -796,7 +796,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "f626de69",
+   "id": "51",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -825,7 +825,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "1fcef73c",
+   "id": "52",
    "metadata": {},
    "source": [
     "As you can see two couplers have more broadband response"
@@ -833,7 +833,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "90389668",
+   "id": "53",
    "metadata": {},
    "source": []
   }
diff --git a/docs/notebooks/31_data_analysis_mzi.ipynb b/docs/notebooks/31_data_analysis_mzi.ipynb
index 6f82302f..f212fe52 100644
--- a/docs/notebooks/31_data_analysis_mzi.ipynb
+++ b/docs/notebooks/31_data_analysis_mzi.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "5d49b28c",
+   "id": "0",
    "metadata": {},
    "source": [
     "# Data analysis MZI\n",
@@ -60,7 +60,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "72d79144",
+   "id": "1",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -74,7 +74,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "20a3e15b",
+   "id": "2",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -84,7 +84,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3eeaae4c",
+   "id": "3",
    "metadata": {},
    "source": [
     "For some reason this MZI has an interference pattern. This is strange because the lengths of both arms are the same. This means that there was a strong height variation on the chip."
@@ -93,7 +93,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "25062381",
+   "id": "4",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -104,7 +104,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1a87a2ff",
+   "id": "5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -116,7 +116,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "7075e4b1",
+   "id": "6",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -128,7 +128,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "4abed017",
+   "id": "7",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -140,7 +140,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "a50bd499",
+   "id": "8",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -150,7 +150,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "2d7f5ac8",
+   "id": "9",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -187,7 +187,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "a4abb9b1",
+   "id": "10",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -197,7 +197,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "688e7d87",
+   "id": "11",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -207,7 +207,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "2242f456",
+   "id": "12",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -219,7 +219,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "347052a1",
+   "id": "13",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -253,7 +253,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8e79030b",
+   "id": "14",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -263,7 +263,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8d121403",
+   "id": "15",
    "metadata": {},
    "outputs": [],
    "source": [
diff --git a/docs/notebooks/32_data_analysis_ring.ipynb b/docs/notebooks/32_data_analysis_ring.ipynb
index 30e9a4b2..72350eed 100644
--- a/docs/notebooks/32_data_analysis_ring.ipynb
+++ b/docs/notebooks/32_data_analysis_ring.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "c3b33867",
+   "id": "0",
    "metadata": {},
    "source": [
     "# Data analysis ring\n",
@@ -27,7 +27,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "53a4d143",
+   "id": "1",
    "metadata": {
     "attributes": {
      "classes": [],
@@ -45,7 +45,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8f3c643f",
+   "id": "2",
    "metadata": {
     "attributes": {
      "classes": [],
diff --git a/docs/notebooks/33_data_analysis_dbr.ipynb b/docs/notebooks/33_data_analysis_dbr.ipynb
index b453ecb0..d799a9f5 100644
--- a/docs/notebooks/33_data_analysis_dbr.ipynb
+++ b/docs/notebooks/33_data_analysis_dbr.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "bd09fcec",
+   "id": "0",
    "metadata": {},
    "source": [
     "# Data analysis DBR\n",
@@ -14,7 +14,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "20194c4f",
+   "id": "1",
    "metadata": {
     "attributes": {
      "classes": [],
@@ -33,7 +33,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "1406f8cd",
+   "id": "2",
    "metadata": {
     "attributes": {
      "classes": [],
@@ -51,7 +51,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "b3c9ec26",
+   "id": "3",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -66,7 +66,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "12715ac7",
+   "id": "4",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -113,7 +113,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "93a5a537",
+   "id": "5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -125,7 +125,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "e4aa90a5",
+   "id": "6",
    "metadata": {},
    "outputs": [],
    "source": [
diff --git a/install_tech.py b/install_tech.py
index 658cb5dc..da740b39 100644
--- a/install_tech.py
+++ b/install_tech.py
@@ -1,4 +1,5 @@
 """Symlink tech to klayout."""
+
 import os
 import pathlib
 import shutil
diff --git a/pyproject.toml b/pyproject.toml
index 706001f7..3943af0d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,6 +39,9 @@ docs = [
   "jupyter-book==0.15.1"
 ]
 
+[tool.codespell]
+ignore-words-list = "te, te/tm, te, ba, fpr, fpr_spacing, ro, nd, donot, schem"
+
 [tool.mypy]
 python_version = "3.10"
 strict = true
diff --git a/sparameters/straight_length3_d34ef86b690da3f9c50cb80b5cf3ff11.yml b/sparameters/straight_length3_d34ef86b690da3f9c50cb80b5cf3ff11.yml
deleted file mode 100644
index 56d99879..00000000
--- a/sparameters/straight_length3_d34ef86b690da3f9c50cb80b5cf3ff11.yml
+++ /dev/null
@@ -1,368 +0,0 @@
-component:
-  name: straight_length3
-  ports:
-    o1:
-      center:
-      - 0.0
-      - 0.0
-      layer:
-      - 1
-      - 0
-      name: o1
-      orientation: 180.0
-      port_type: optical
-      shear_angle: null
-      width: 0.5
-    o2:
-      center:
-      - 3.0
-      - 0.0
-      layer:
-      - 1
-      - 0
-      name: o2
-      orientation: 0.0
-      port_type: optical
-      shear_angle: null
-      width: 0.5
-  settings:
-    changed:
-      length: 3
-    child: null
-    default:
-      cross_section: strip
-      length: 10.0
-      npoints: 2
-      with_bbox: true
-    full:
-      cross_section: strip
-      length: 3
-      npoints: 2
-      with_bbox: true
-    function_name: straight
-    info:
-      cross_section: strip
-      function_name: cross_section
-      length: 3.0
-      route_info:
-        length: 3.0
-        type:
-          auto_widen: false
-          auto_widen_minimum_length: 200.0
-          bbox_layers: []
-          bbox_offsets: []
-          cladding_layers:
-          - DEVREC
-          cladding_offsets:
-          - 0.0
-          cladding_simplify: null
-          end_straight_length: 0.01
-          gap: 3.0
-          info:
-            function_name: cross_section
-            settings:
-              add_bbox: null
-              add_pins:
-                function: add_pins_siepic
-              auto_widen: false
-              auto_widen_minimum_length: 200.0
-              bbox_layers: null
-              bbox_offsets: null
-              cladding_layers:
-              - DEVREC
-              cladding_offsets:
-              - 0
-              cladding_simplify: null
-              decorator: null
-              end_straight_length: 0.01
-              gap: 3.0
-              info: null
-              layer: WG
-              min_length: 0.01
-              mirror: false
-              name: null
-              offset: 0
-              port_names:
-              - o1
-              - o2
-              port_types:
-              - optical
-              - optical
-              radius: 10.0
-              sections: null
-              snap_to_grid: null
-              start_straight_length: 0.01
-              taper_length: 10.0
-              width: 0.5
-              width_wide: null
-          layer: WG
-          min_length: 0.01
-          mirror: false
-          name: null
-          offset: 0.0
-          port_names:
-          - o1
-          - o2
-          port_types:
-          - optical
-          - optical
-          radius: 10.0
-          sections: []
-          simplify: null
-          snap_to_grid: null
-          start_straight_length: 0.01
-          taper_length: 10.0
-          width: 0.5
-          width_wide: null
-        weight: 3.0
-        ? '{''layer'': ''WG'', ''width'': 0.5, ''offset'': 0.0, ''radius'': 10.0,
-          ''width_wide'': None, ''simplify'': None, ''auto_widen'': False, ''auto_widen_minimum_length'':
-          200.0, ''taper_length'': 10.0, ''bbox_layers'': [], ''bbox_offsets'': [],
-          ''cladding_layers'': [''DEVREC''], ''cladding_offsets'': [0.0], ''cladding_simplify'':
-          None, ''sections'': [], ''port_names'': [''o1'', ''o2''], ''port_types'':
-          [''optical'', ''optical''], ''gap'': 3.0, ''min_length'': 0.01, ''start_straight_length'':
-          0.01, ''end_straight_length'': 0.01, ''snap_to_grid'': None, ''info'': {''settings'':
-          {''width'': 0.5, ''offset'': 0, ''layer'': ''WG'', ''width_wide'': None,
-          ''auto_widen'': False, ''auto_widen_minimum_length'': 200.0, ''taper_length'':
-          10.0, ''radius'': 10.0, ''sections'': None, ''port_names'': [''o1'', ''o2''],
-          ''port_types'': [''optical'', ''optical''], ''gap'': 3.0, ''min_length'':
-          0.01, ''start_straight_length'': 0.01, ''end_straight_length'': 0.01, ''snap_to_grid'':
-          None, ''bbox_layers'': None, ''bbox_offsets'': None, ''cladding_layers'':
-          [''DEVREC''], ''cladding_offsets'': [0], ''cladding_simplify'': None, ''info'':
-          None, ''decorator'': None, ''add_pins'': {''function'': ''add_pins_siepic''},
-          ''add_bbox'': None, ''mirror'': False, ''name'': None}, ''function_name'':
-          ''cross_section''}, ''name'': None, ''mirror'': False}_length'
-        : 3.0
-      settings:
-        add_bbox: null
-        add_pins:
-          function: add_pins_siepic
-        auto_widen: false
-        auto_widen_minimum_length: 200.0
-        bbox_layers: null
-        bbox_offsets: null
-        cladding_layers:
-        - DEVREC
-        cladding_offsets:
-        - 0
-        cladding_simplify: null
-        decorator: null
-        end_straight_length: 0.01
-        gap: 3.0
-        info: null
-        layer: WG
-        min_length: 0.01
-        mirror: false
-        name: null
-        offset: 0
-        port_names:
-        - o1
-        - o2
-        port_types:
-        - optical
-        - optical
-        radius: 10.0
-        sections: null
-        snap_to_grid: null
-        start_straight_length: 0.01
-        taper_length: 10.0
-        width: 0.5
-        width_wide: null
-      width: 0.5
-    info_version: 2
-    module: gdsfactory.components.straight
-    name: straight_length3
-compute_time_minutes: 0.1275598446528117
-compute_time_seconds: 7.653590679168701
-dispersive: false
-is_3d: false
-layer_stack:
-  box:
-    background_doping_concentration: null
-    background_doping_ion: null
-    bias: null
-    derived_layer: null
-    info:
-      mesh_order: 99
-    into: null
-    layer: !!python/tuple
-    - 99999
-    - 0
-    layer_type: grow
-    material: sio2
-    mesh_order: 3
-    mode: null
-    orientation: '100'
-    resistivity: null
-    sidewall_angle: 0.0
-    sidewall_angle_tolerance: null
-    thickness: 3.0
-    thickness_tolerance: null
-    width_to_z: 0.0
-    z_to_bias: null
-    zmin: -3.0
-    zmin_tolerance: null
-  clad:
-    background_doping_concentration: null
-    background_doping_ion: null
-    bias: null
-    derived_layer: null
-    info:
-      mesh_order: 100
-    into: null
-    layer: !!python/tuple
-    - 99999
-    - 0
-    layer_type: grow
-    material: sio2
-    mesh_order: 3
-    mode: null
-    orientation: '100'
-    resistivity: null
-    sidewall_angle: 0.0
-    sidewall_angle_tolerance: null
-    thickness: 1.8000000000000003
-    thickness_tolerance: null
-    width_to_z: 0.0
-    z_to_bias: null
-    zmin: 0.0
-    zmin_tolerance: null
-  core:
-    background_doping_concentration: null
-    background_doping_ion: null
-    bias: null
-    derived_layer: null
-    info:
-      mesh_order: 1
-    into: null
-    layer: !!python/tuple
-    - 1
-    - 0
-    layer_type: grow
-    material: si
-    mesh_order: 3
-    mode: null
-    orientation: '100'
-    resistivity: null
-    sidewall_angle: 10.0
-    sidewall_angle_tolerance: null
-    thickness: 0.22
-    thickness_tolerance: null
-    width_to_z: 0.5
-    z_to_bias: null
-    zmin: 0.0
-    zmin_tolerance: null
-  core2:
-    background_doping_concentration: null
-    background_doping_ion: null
-    bias: null
-    derived_layer: null
-    info:
-      mesh_order: 1
-    into: null
-    layer: !!python/tuple
-    - 31
-    - 0
-    layer_type: grow
-    material: si
-    mesh_order: 3
-    mode: null
-    orientation: '100'
-    resistivity: null
-    sidewall_angle: 10.0
-    sidewall_angle_tolerance: null
-    thickness: 0.22
-    thickness_tolerance: null
-    width_to_z: 0.5
-    z_to_bias: null
-    zmin: 0.0
-    zmin_tolerance: null
-  heater:
-    background_doping_concentration: null
-    background_doping_ion: null
-    bias: null
-    derived_layer: null
-    info:
-      mesh_order: 1
-    into: null
-    layer: !!python/tuple
-    - 11
-    - 0
-    layer_type: grow
-    material: TiN
-    mesh_order: 3
-    mode: null
-    orientation: '100'
-    resistivity: null
-    sidewall_angle: 0.0
-    sidewall_angle_tolerance: null
-    thickness: 0.75
-    thickness_tolerance: null
-    width_to_z: 0.0
-    z_to_bias: null
-    zmin: 1.1
-    zmin_tolerance: null
-  metal2:
-    background_doping_concentration: null
-    background_doping_ion: null
-    bias: null
-    derived_layer: null
-    info:
-      mesh_order: 2
-    into: null
-    layer: !!python/tuple
-    - 12
-    - 0
-    layer_type: grow
-    material: Aluminum
-    mesh_order: 3
-    mode: null
-    orientation: '100'
-    resistivity: null
-    sidewall_angle: 0.0
-    sidewall_angle_tolerance: null
-    thickness: 0.7000000000000001
-    thickness_tolerance: null
-    width_to_z: 0.0
-    z_to_bias: null
-    zmin: 1.8000000000000003
-    zmin_tolerance: null
-  substrate:
-    background_doping_concentration: null
-    background_doping_ion: null
-    bias: null
-    derived_layer: null
-    info:
-      mesh_order: 99
-    into: null
-    layer: !!python/tuple
-    - 99999
-    - 0
-    layer_type: grow
-    material: si
-    mesh_order: 3
-    mode: null
-    orientation: '100'
-    resistivity: null
-    sidewall_angle: 0.0
-    sidewall_angle_tolerance: null
-    thickness: 10.0
-    thickness_tolerance: null
-    width_to_z: 0.0
-    z_to_bias: null
-    zmin: -13.0
-    zmin_tolerance: null
-port_margin: 2
-port_monitor_offset: -0.1
-port_source_offset: -0.1
-port_symmetries:
-  o2@0,o1@0:
-  - o1@0,o2@0
-resolution: 30
-wavelength_points: 50
-wavelength_start: 1.5
-wavelength_stop: 1.6
-xmargin_left: 0
-xmargin_right: 0
-ymargin_bot: 3
-ymargin_top: 3
diff --git a/ubcpdk/components.py b/ubcpdk/components.py
index 9be61608..9e684f28 100644
--- a/ubcpdk/components.py
+++ b/ubcpdk/components.py
@@ -1,4 +1,5 @@
 """Cells imported from the PDK."""
+
 from functools import cache, partial
 
 import gdsfactory as gf
diff --git a/ubcpdk/data/__init__.py b/ubcpdk/data/__init__.py
index c7b8dc35..d863252b 100644
--- a/ubcpdk/data/__init__.py
+++ b/ubcpdk/data/__init__.py
@@ -1,6 +1,5 @@
 """Data analysis module."""
 
-
 from .chop import chop
 from .find_bandwidth import find_bandwidth
 from .read_mat import read_mat
diff --git a/ubcpdk/samples/data/mzi/IPC_LukasChrostowski.rtf b/ubcpdk/samples/data/mzi/IPC_LukasChrostowski.rtf
deleted file mode 100755
index 1b99fb0f..00000000
--- a/ubcpdk/samples/data/mzi/IPC_LukasChrostowski.rtf
+++ /dev/null
@@ -1,34 +0,0 @@
-{\rtf1\ansi\ansicpg1252\cocoartf1343\cocoasubrtf160
-{\fonttbl\f0\fswiss\fcharset0 Helvetica;}
-{\colortbl;\red255\green255\blue255;}
-\margl1440\margr1440\vieww12600\viewh10200\viewkind0
-\pard\tx566\tx1133\tx1700\tx2267\tx2834\tx3401\tx3968\tx4535\tx5102\tx5669\tx6236\tx6803\pardirnatural
-
-\f0\fs28 \cf0 Measuring optical waveguide length:\
-- measure the horizontal path, from centre to centre  (path is the one with sharp angles)\
-- add 2 * ybranch output separation\
-\
-Can also measure the waveguide by finding the total area\
-{\field{\*\fldinst{HYPERLINK "http://www.klayout.de/useful_scripts.html#calc_area.rbm"}}{\fldrslt http://www.klayout.de/useful_scripts.html#calc_area.rbm}}\
-then divide by the waveguide width\
-\
-MZI1:\
-dL_wg=(85.10000-77.20000)*2  +5.5*2; dL_wg\
-= 26.8\
-\
-or, \
-area1 = 80.210502\
-area2 = 66.810502\
-dL_wg = (80.210502-66.810502)/0.5; dL_wg\
-= 26.8\
-\
-MZI2:\
-dL_wg=(768.95000-77.20000)*2 +5.5*2; dL_wg\
-= 1394.5\
-\
-\
-\
-\
-\
-\
-}
diff --git a/ubcpdk/samples/data/mzi/IPC_ZiheGao.rtf b/ubcpdk/samples/data/mzi/README.md
similarity index 60%
rename from ubcpdk/samples/data/mzi/IPC_ZiheGao.rtf
rename to ubcpdk/samples/data/mzi/README.md
index 8dfb5843..85071740 100755
--- a/ubcpdk/samples/data/mzi/IPC_ZiheGao.rtf
+++ b/ubcpdk/samples/data/mzi/README.md
@@ -1,14 +1,8 @@
-{\rtf1\ansi\ansicpg1252\cocoartf1343\cocoasubrtf160
-{\fonttbl\f0\fswiss\fcharset0 Helvetica;}
-{\colortbl;\red255\green255\blue255;}
-\margl1440\margr1440\vieww12600\viewh10200\viewkind0
-\pard\tx566\tx1133\tx1700\tx2267\tx2834\tx3401\tx3968\tx4535\tx5102\tx5669\tx6236\tx6803\pardirnatural
-
-\f0\fs28 \cf0 Measuring optical waveguide length:\
+Measuring optical waveguide length:
 - measure the vertical path, from centre to centre  (path is the one with sharp angles)\
 - determine radius (from PCell)\
 - add the radial bend waveguide, subtract the path in that same place\
-\
+-
 MZI1:\
 dL_wg=0\
 \
@@ -54,9 +48,28 @@ MZI17:\
 r=2\
 dL_path = (259.55000-148.15000) * 2\
 dL_wg = dL_path + 2*pi*r - 4*2*r ; dL_wg\
-= 219.366\
+
+
+## Lukas
+
+Measuring optical waveguide length:\
+- measure the horizontal path, from centre to centre  (path is the one with sharp angles)\
+- add 2 * ybranch output separation\
 \
+Can also measure the waveguide by finding the total area\
+{\field{\*\fldinst{HYPERLINK "http://www.klayout.de/useful_scripts.html#calc_area.rbm"}}{\fldrslt http://www.klayout.de/useful_scripts.html#calc_area.rbm}}\
+then divide by the waveguide width\
 \
+MZI1:\
+dL_wg=(85.10000-77.20000)*2  +5.5*2; dL_wg\
+= 26.8\
 \
+or, \
+area1 = 80.210502\
+area2 = 66.810502\
+dL_wg = (80.210502-66.810502)/0.5; dL_wg\
+= 26.8\
 \
-}
+MZI2:\
+dL_wg=(768.95000-77.20000)*2 +5.5*2; dL_wg\
+= 1394.5\
diff --git a/ubcpdk/tech.py b/ubcpdk/tech.py
index c41150f0..2e780e19 100644
--- a/ubcpdk/tech.py
+++ b/ubcpdk/tech.py
@@ -4,6 +4,7 @@
 - cross_sections (xs_)
 - constants (WIDTH, CLADDING_OFFSET ...)
 """
+
 import sys
 from functools import partial