The original edition was published in 1993 (2nd edition). There is no coverage of:
Utilizes photodetectors—such as PIN photodiodes or Avalanche Photodiodes (APDs) —to convert light signals back into electrical data. Gowar explains noise sources, signal-to-noise ratio (SNR) calculations, and the regeneration of digital signals to maintain data integrity. Key Technical Challenges Covered optical communication systems john gowar pdf