Dispersion Compensation Schemes – A System Perspective
In this section, we will show how dispersion compensation schemes affect the system performance. The pulse broadening effect of chromatic dispersion causes the signals in the adjacent bit periods to overlap. This is called intersymbol interference (ISI). Broadening is a function of distance as well as dispersion parameter D. The dispersion parameter is given in…
Compensation of Dispersion With Ideal Dispersion Component
This lesson demonstrates the possibility for dispersion compensation with the help of ideal dispersion component in OptiSystem. The project layout is shown in Figure 1. Figure 1: Project Layout for dispersion compensation with ideal dispersion component in OptiSystem The following shape was generated in the Optical Gaussian pulse generator with an initial 12.5 ps pulse…
Compensation of Dispersion with Fiber Bragg Grating Component
This lesson demonstrates the possibility for dispersion compensation with the help of fiber Bragg Grating created with the Fiber Grating component. This component allows design of apodized and chirped fiber gratings that are able to provide dispersion compensation in optical system. The physical idea behind this compensation is following: creating of an apodised linear chirped…
Uniform Fiber Bragg Grating as a Filter
This lesson demonstrates the application of the uniform fiber Bragg grating component in OptiSystem as a filter. This lesson has two project layouts. In the first one, a white light source is used. In the second one, a Gaussian pulse is used. The first project layout is shown in Figure 1 Figure 1: Project Layout…
Compensation of Dispersion with OptiGrating
This lesson demonstrates how OptiSystem can work with OptiGrating to design a proper dispersion compensation element in optical systems. The idea behind it is to use the additional possibilities provided by OptiGrating for design of fiber gratings. The physical idea behind this compensation is following: creating of a linear chirped grating allows us to create…
Dispersion Compensation Using Subsystems
This lesson illustrates how to simulate a simple dispersion compensated link elaborating further the concepts of subsystem definition. Let us set up the following layout, which includes…
Maximum-Likelihood Sequence Estimation (MLSE) Equalizer
This project MLSE Application.osd demonstrates the application of the component ‘MLSE Equalizer’. The MLSE Equalizer component is available in the OptiSystem component library folder ‘Default/Receivers Library/Regenerators’ (Figure 1). Figure 1: OptiSystem component library The system layout is presented in Figure 2. A 10 GB/s BPSK signal is generated by the ‘BPSK Generator’ component. The signal…
DFE – Decision-Feedback Equalizer
Project DFE Application.osd demonstrates the application of the component ‘Electronic Equalizer”. The Electronic Equalizer component is available in the OptiSystem component library folder ‘Default/Receivers Library/Regenerators’ (Figure 1). Figure 1: OptiSystem component library The system layout is presented in Figure 2. A 10 GB/s BPSK signal is generated by the ‘BPSK Generator’ component. The signal is…
Dispersion Compensation Using Electronic Equalization
Project Equalizer GVD.osd demonstrates the application of the equalizer in an optical link (Figure 1). Figure 2 depicts the eye diagram before and after dispersion compensation. Figure 1: GVD compensation Figure 2: Eye diagram before and after the equalizer