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# Resources

## Dispersion Shifted Fiber

In this example, we will show you how to simulate optical fiber that has a triangular with annular ring profile. In addition, we will show you how to optimize given fiber profile to have zero dispersion at 1550 nm by the powerful parameter scan routines of OptiFiber. You can find this example as the DSF.fcd…

## Fiber Bragg Grating

In the first lesson, you will learn how to design a Fiber Bragg Grating with chirp and apodization. Such a grating finds application in fiber dispersion compensation. S.1 The first thing you will do is to open a new project. Then, you will choose one of the five available modules to work with: Single Fiber,…

## Sensors

In this lesson, you will use the Fiber Bragg Grating example from Lesson 1. Have a
look at the Profile graph…

## Reconstruction of Unknown Grating

In this lesson we check that the layer peeling algorithm can reconstruct an unknown grating with knowledge of only the reflection coefficient. In the first step, we select a typical grating with chirp and apodization and calculate its reflection coefficient. This spectrum is then exported to a text file. In the next step, OptiGrating is…

## Electroabsorption Modulator

In this tutorial, we demonstrate optical modulation using an electroabsorbtion modulator. Sample: Electroabsorption Modulator.osch The EA Modulator device is located in the OptoElectric library. It has 2 electrical ports for the bias and RF driving and 2 optical ports as an input and output. The EA modulator is driven with a voltage source device which…

## Ring Switch

In this tutorial, we demonstrate a ring switch that adds or drops channels by controlling the index of a ring resonator. Sample: RingSwitch.osch Figure 1: Schematics of Ring Switch The ‘LaserBlck’ is a subcircuit block that contains a circuit for driving laser diode. The laser diode is also connected with a thermal network consisting of…

## VCSEL Array

In this tutorial, we demonstrate the simulation of a VCSEL Array circuit that contains an array of Vertical Cavity Surface Emitting Lasers (VCSEL) which exhibits temperature dependent effects. Sample: Vcsel Array.osch Figure 1: Schematics of VCSEL Array This circuit contains an array of eight VCSELs. The top level schematics contain eight subcircuit block representing each…

## Create an MMI star coupler

Now that you have completed Lessons 1, 2, and 3, you are familiar with the basic procedures to create projects using OptiBPM: Creating materials Inserting waveguides and input planes Editing waveguide and input plane properties Running a simulation Viewing results and various numerical tools in OptiBPM_Analyzer Lesson 4 and all proceeding lessons provide a high-level…

## Create a Chip-to-fiber Butt Coupler

This lesson describes how to create a chip-to-fiber coupler. You will create a model of a simple spot-size transformer based on lateral tapering, as reported in [1]. Highly efficient chip-to-fiber coupling with large alignment tolerances is important for applications of optoelectronic integrated semiconductor devices. Such coupling requires a low-loss change of the light beam spot…

## Electro-Optic Modulator

This lesson shows how to make a 3D simulation in a material modified by the linear electro-optic effect (Pockels Effect). The waveguide design of Reference [1] is shown in Figure 1 below. In this lesson, this waveguide is created, a potential is applied to the electrodes, and the results are compared to Reference [1]. Figure…