Format Conversion From 120-Gb/s RZ-D8PSK to 80-Gb/s RZ-DQPSK Through FWM-Based Optical Phase Erasure
Journal article, 2010
An optical format conversion scheme from 120-Gb/s return-to-zero differential 8-ary phase-shift keying (RZ-D8PSK) to 80-Gb/s RZ differential quadrature phase-shift keying (RZ-DQPSK) is demonstrated by optically removing one tributary through optical phase erasure. It is achieved through four-wave mixing in a highly nonlinear fiber. An 8-dB sensitivity improvement is obtained for the converted DQPSK signal relative to that of the input D8PSK signal. This is potentially useful to enable the interconnection among neighboring networks where different formats are deployed.
fiber
phase-shift keying (DQPSK)
Differential 8-ary phase-shift keying (D8PSK)
differential quadrature
phase modulation
format conversion
dpsk
optical fiber communications
four-wave mixing (FWM)
Author
Guo-Wei Lu
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Ekawit Tipsuwannakul
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
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
IEEE Photonics Technology Letters
1041-1135 (ISSN) 19410174 (eISSN)
Vol. 22 24 1817-1819 5601748Areas of Advance
Information and Communication Technology
Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/LPT.2010.2087322