Format Conversion of Optical Multilevel Signals Using FWM-Based Optical Phase Erasure
Journal article, 2011
An optical format conversion scheme of multilevel phase-shift keying (M-ary PSK) signals using the four-wave mixing based optical phase erasure is discussed in this paper. The conversion from differential quadrature phase-shift keying (DQPSK) to differential phase shift keying at 10 and 160 Gbaud, and the conversion from differential eight-ary phase-shift keying to DQPSK at 40 Gbaud have been experimentally demonstrated. The proposed scheme could be used as a phase erasure, in which a redundant tributary of the M-ary PSK signal is removed, or as an "updater" where the unwanted phase pattern is replaced with the new pattern.
differential quadrature
communications
differential 8-ary phase-shift keying
optical fiber
Differential phase-shift keying (DPSK)
four-wave mixing (FWM)
loop-mirror
format conversion
phase-shift keying (DQPSK)
phase modulation
wavelength converter
(D8PSK)
Author
Guo-Wei Lu
Japan National Institute of Information and Communications Technology
Ekawit Tipsuwannakul
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
T. Miyazaki
Japan National Institute of Information and Communications Technology
Carl Peter Lundström
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Magnus Karlsson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Peter Andrekson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Journal of Lightwave Technology
0733-8724 (ISSN) 1558-2213 (eISSN)
Vol. 29 16 2460-2466 5936087Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/JLT.2011.2160977