Title :
A switchable demodulator for both DPSK and DQPSK formats
Author :
Zhang, Di ; Liu, Wen ; Chen, Long ; Xue, Zhenfeng ; Hu, Qianggao
Author_Institution :
Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
A single device which can demodulate both DPSK and DQPSK formats by simply rotating a quarter-wave plate is proposed in this paper. Through introducing LC phase retarder and polarization-dependent phase compensation, fast tuning time of 50ms and low PDFS of less than 300MHz are successfully realized.
Keywords :
demodulators; differential phase shift keying; polarisation; quadrature phase shift keying; DPSK; DQPSK; LC phase retarder; phase compensation; polarization; switchable demodulator; Delay; Demodulation; Differential phase shift keying; Optical interferometry; Optical retarders; Switches; Tuning;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2010 Asia
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-7111-9
DOI :
10.1109/ACP.2010.5682835
