Half baudrate electrical clock based demultiplexing scheme for OTDM-DQPSK signal using SOA and optical filter |
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| Authors: | Hui Wang Deming Kong Yan Li Junyi Zhang Jian Wu and Jintong Lin |
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| Affiliation: | 1 State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China 2 School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China |
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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 2×40-GBd OTDM-DQPSK signal.Error-free performance is demonstrated,and the average power penalty for both channels is about 3 dB. |
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