Bit-Rate Flexible Demodulation of DPSK Signals Based on Phase Sensitive Gain in Cascaded Four-Wave Mixing

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...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 24; no. 12; pp. 994 - 996
Main Authors Xuelei Fu, Yongheng Dai, Lei, G. K. P., Shu, C.
Format Journal Article
LanguageEnglish
Published IEEE 15.06.2012
Subjects
Delay
Demodulation
Differential phase shift keying
Differential phase-shift keying (DPSK)
four-wave mixing
Nonlinear optics
Optical filters
Optical pumping
Optical sensors
tunable optical delay
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Summary: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2012.2191951