Chinese Optics Letters, 2012, 10 (4): 040601, Published Online: Jan. 5, 2012
Half baudrate electrical clock based demultiplexing scheme for OTDM-DQPSK signal using SOA and optical f ilter
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 \times 40-GBd OTDM-DQPSK signal. Error-free performance is demonstrated, and the average power penalty for both channels is about 3 dB.
Hui Wang, Deming Kong, Yan Li, Junyi Zhang, Jian Wu, Jintong Lin. Half baudrate electrical clock based demultiplexing scheme for OTDM-DQPSK signal using SOA and optical f ilter[J]. Chinese Optics Letters, 2012, 10(4): 040601.
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