Title :
Bit-Rate Flexible Demodulation of DPSK Signals Based on Phase Sensitive Gain in Cascaded Four-Wave Mixing
Author :
Fu, Xuelei ; Dai, Yongheng ; Lei, Gordon K P ; Shu, Chester
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong, China
fDate :
6/15/2012 12:00:00 AM
Abstract :
We demonstrate bit-rate flexible demodulation of differential phase-shift keying (DPSK) signals in a linear structure. The demodulator utilizes a tunable optical delay based on the combination of wavelength conversion in a photonic crystal fiber and dispersion in a short section of single-mode fiber. Error-free demodulations for return-to-zero-DPSK signals at both 25 and 40 Gb/s have been successfully achieved.
Keywords :
amplification; demodulation; differential phase shift keying; optical fibre networks; bit-rate flexible demodulation; cascaded four-wave mixing; differential phase-shift keying; error-free demodulations; linear structure; phase sensitive gain; photonic crystal fiber; return-to-zero-DPSK signals; single-mode fiber; wavelength conversion; Delay; Demodulation; Differential phase shift keying; Nonlinear optics; Optical filters; Optical pumping; Optical sensors; Differential phase-shift keying (DPSK); four-wave mixing; tunable optical delay;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2191951
