Simulation of optical communication systems using MATLAB

In this project, a simulation software using MATLAB was developed. A number of new system features were developed. These include a pseudo-random step function bit pattern as input signal (which was generated and superimposed on a DC bias current to drive the laser), On-Off Keying (OOK) modulation; o...

Full description

Saved in:
Bibliographic Details
Main Author: Chew, Kheng Heng.
Other Authors: Lu, Chao
Format: Theses and Dissertations
Published: 2008
Subjects:
Online Access:http://hdl.handle.net/10356/4129
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Description
Summary:In this project, a simulation software using MATLAB was developed. A number of new system features were developed. These include a pseudo-random step function bit pattern as input signal (which was generated and superimposed on a DC bias current to drive the laser), On-Off Keying (OOK) modulation; optical filter for optical signal filtering; the photo-detector and receiver pulse-shaping filter for recovering the OOK signal to electrical current for evaluating the systems performance. Directly modulated semiconductor laser through carrier injection not only induces dispersion in long haul single-mode fiber communication systems, but also causes energy loss and signal distortion when frequency selective elements such as filter is present.