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   "source": [
    "# Waveguide array\n",
    "\n",
    "To define a waveguide array we need to define:\n",
    "\n",
    "- wg_gaps\n",
    "- widths\n",
    "- the material functions or refractive indices of box, waveguide and clad\n",
    "- thickness of each material\n",
    "- x and y_steps for discretizing the structure\n",
    "- sidewall angle\n",
    "- wavelength that can be used in case the refractive index are a function of the\n",
    "wavelength\n",
    "\n",
    "Where all units are in um"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "\n",
    "```\n",
    "     __________________________________________________________\n",
    "\n",
    "                                                              clad_thickness\n",
    "          widths[0]  wg_gaps[0]  widths[1]\n",
    "           ___________              ___________    _ _ _ _ _ _\n",
    "          |           |            |           |\n",
    "     _____|           |____________|           |____          |\n",
    "                                                              wg_heigth\n",
    "     slab_thickness                                              |\n",
    "     ________________________________________________ _ _ _ _ _\n",
    "\n",
    "     sub_thickness\n",
    "     __________________________________________________________\n",
    "\n",
    "```\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import modes as ms"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "wg = ms.waveguide_array(widths=[0.5]*2, wg_gaps=0.2)\n",
    "wg"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "ms.waveguide_array?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "wg_slab = ms.waveguide_array(widths=[0.5]*2, wg_gaps=0.2, slab_thickness=0.09)\n",
    "wg_slab"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "s = ms.mode_solver_full(wg=wg_slab, plot=True, plot_index=True, fields_to_write=('Ex'))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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