OptiGrating Tutorials

Help

The Help menu offers a choice of the two options: Help Topics and About OptiGrating. Help Topics Displays the OptiGrating Help topics. About OptiGrating Displays the information about the current version of the program. System Info Displays the information of your computer.

Overview

The File Menu When you start OptiGrating, you have only three menus to work with: File, View, and Help. However, when you create a new project or open an existing one, you notice that there are nine menus that contain all commands you will need to do your work effectively. The File menu, shown on…

Single Fiber

File: New > Single Fiber The Single Fiber Module You use the Single Fiber module to model a fiber with arbitrary radial symmetry while the grating can be placed anywhere in the fiber. OptiGrating allows you to adjust both the fiber dimensions and refractive index profile and photosensitivity profile. You can simulate the grating assisted…

Fiber Coupler

File: New > Fiber Coupler The Fiber Coupler Module You use the Fiber Coupler module to model two fibers embedded in one infinite cladding. The grating can be placed anywhere in the coupler. OptiGrating allows you to adjust both the fiber coupler dimensions and refractive index profile and photosensitivity profile. You can optimize the coupling…

Single Waveguide

File: New > Single Waveguide The Single Waveguide Module You use the Single Waveguide to model a multilayer slab waveguide with grating. The grating can be placed on the interface of layers as surface relief grating, or in layers as index-modulated grating. You can simulate the coupling between forward and backward propagating modes. There are…

Waveguide Coupler

File: New > Waveguide Coupler The Waveguide Coupler Module You use the Waveguide Coupler Module to model a two slab waveguide with a grating. The grating can be placed on the interface of layers as surface relief grating, or in layers as indexmodulated grating. You can simulate the coupling between modes of the two waveguides.…

Other Waveguide

File: New > Other Waveguide The Other Waveguide Module You use the Other Waveguide Module to model general waveguides with a grating. In this module, the user needs to define the mode properties instead of the waveguide profile in the other modules. The Other Waveguide module finds application in WDM add/drop filters, Bragg gratings, Long…

Apodized Fiber Bragg Grating Simulation

Reference T. Erdogan, ‘Fiber Grating Spectra,’ J. Lightwave Technol., vol.15, No.8, (1997), pp.1277-1294. Description The example demonstrates the effect of apodization on the optical properties of a fiber grating. A chirpless, sinusoidal Bragg grating has a user-defined average refractive index and apodization. The average index is modulated by the Gaussian function: Index_Mod*exp(-ln2*(2*(x-Length/2)/Length)^2) The fiber Bragg grating…

Sampled Grating

Reference T. Erdogan, ‘Fiber Grating Spectra,’ J. Lightwave Technol., vol.15, No.8, pp.1277- 1294, (1997). Description The example demonstrates a sampled grating exhibiting periodic superstructure. The superstructure is a collection of 99 identical gratings and phase shift blocks. The gratings are uniform and have a uniform average index. The main result is the multi-peak, periodic superstructure…

Mode Conversion by Fiber Bragg Grating

Reference C.-X. Shi and T. Okoshi, ‘Mode conversion based on the periodic coupling by a reflective fiber grating,’ Opt. Lett., vol.17, No.23, pp.1655-1657, (1992). Description The example demonstrates the mode conversion between the LP01 and LP02 mode in a fiber with Bragg grating. The fiber has four LP core modes. In the example, only three…