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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 10,
  • Issue 4,
  • pp. 040601-
  • (2012)

Half baudrate electrical clock based demultiplexing scheme for OTDM-DQPSK signal using SOA and optical f ilter

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Abstract

A demultiplexing scheme based on semiconductor optical amplifier (SOA) and optical filter for optical time division multiplexing differential quadrature phase shift keying (OTDM-DQPSK) system is proposed and investigated experimentally. With only a common half baudrate electrical clock modulated 33% duty cycle return-to-zero (RZ-33) optical clock signal as pump, this scheme is cost-effective, energy-efficient, and integration-potential. A proof-of-concept experiment is carried out for the demultiplexing of a 2 x 40-GBd OTDM-DQPSK signal. Error-free performance is demonstrated, and the average power penalty for both channels is about 3 dB.

© 2012 Chinese Optics Letters

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