Optical Detectors and Receivers

Optical Detectors and Receivers

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A signal undergoes an E/O transformation at a fiber optic transmitter and a corresponding O/E transformation at the receiver. This chapter discusses the O/E process, with emphasis on the first two blocks in that flow: the semiconductor optical detector, or photodiode, and preamplifier. The two together are referred to as the receiver's front-end. With the growing need for commercial systems operating at 10 and even 40 Gb/s, the design of front-ends has become more important and technically challenging.

Chapter Contents:

  • 5.1 Introduction
  • 5.2 Optical Detection
  • 5.3 Photodiode Construction
  • 5.4 Photodiode Performance
  • 5.4.1 Spectral Response and Quantum Efficiency
  • 5.4.2 Sensitivity and Additive Noise
  • 5.4.3 Frequency and Pulse Response
  • 5.4.4 Photodiode Summary
  • 5.5 Preamplifiers

Inspec keywords: preamplifiers; optical receivers; photodiodes; optical transmitters

Other keywords: bit rate 40 Gbit/s; optical receivers; E-O transformation; preamplifier; fiber optic transmitter; semiconductor optical detector; photodiode; commercial systems; bit rate 10 Gbit/s; receiver front-end

Subjects: Photoelectric devices; Amplifiers; Optical communication equipment

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