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Performance comparison of delay-interferometer based direct detection oDOPSK receivers.

M Sathish Kumar1, Hosung Yoon, Namkyoo Park

  • 1School of Electrical Engineering and Computer Science, National University, Seoul, Korea. muskin@yahoo.com

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Summary
This summary is machine-generated.

This study evaluates five optical differential octal phase-shift keying receivers using the Karhunen Loeve series expansion method. Performance was assessed under amplified spontaneous emission noise, classifying receivers by schematic or symbol estimation methods.

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Area of Science:

  • Optical communications
  • Signal processing

Background:

  • Direct detection optical differential phase-shift keying (DPSK) is crucial for high-speed data transmission.
  • Receiver design significantly impacts performance in optical communication systems.
  • Amplified spontaneous emission (ASE) noise is a primary limiting factor in direct detection systems.

Purpose of the Study:

  • To evaluate and compare the performance of five distinct delay-interferometer based direct detection optical differential octal phase-shift keying receivers.
  • To classify these receivers based on their architectural design and symbol estimation techniques.
  • To analyze receiver performance under amplified spontaneous emission (ASE) noise limitations.

Main Methods:

  • Performance evaluation using the Karhunen Loeve series expansion method.
  • Simulation under an amplified spontaneous emission (ASE) noise limited scenario.
  • Classification of receivers based on schematic and symbol estimation algorithms.

Main Results:

  • Quantified performance metrics for each of the five receiver types under ASE noise.
  • Identified receiver architectures and symbol estimation methods that offer superior performance.
  • Demonstrated the effectiveness of the Karhunen Loeve series expansion method for performance analysis.

Conclusions:

  • The study provides a comprehensive performance comparison of different optical DPSK receiver designs.
  • The Karhunen Loeve series expansion method is validated as a robust tool for evaluating receiver performance in noisy optical channels.
  • Findings guide the selection of optimal receiver configurations for future high-speed optical communication systems.