Using Low-Density Parity-Check Codes to Reduce the Effect of Laser Line width For Optical Communication

  • R. S. Fyath Department of Computer Engineering, College of Engineering, Nahrain University, Baghdad-Iraq
  • Hussam A. Darweesh Department of Computer Engineering and Information Technology, University of Technology
Keywords: Laser Line width, Low-Density Parity-Check

Abstract

The performance of coherent optical communication systems is degraded significantly by the phase noise of the semiconductor lasers. The phase noise is induced by spontaneous emission in the laser cavity and yields broadening in the laser linewidth. This paper addresses the application of the Low-Density

Parity-Check (LDPC) codes as Forward Error Correcting (FEC) codes to relax the laser linewidth requirement. These codes are applied to three types of heterodyne optical receivers (BPSK, DPSK and QPSK) operating with finite laser linewidths

Published
2011-03-26
How to Cite
Fyath, R., & Darweesh, H. (2011). Using Low-Density Parity-Check Codes to Reduce the Effect of Laser Line width For Optical Communication. Al-Nahrain Journal for Engineering Sciences, 14(1), 67-79. Retrieved from https://nahje.com/index.php/main/article/view/603