Title :
One-chip integrated polarisation-multiplexed DQPSK demodulator using silica-based planar lightwave circuit technology
Author :
Sakamaki, Y. ; Hattori, K. ; Nasu, Y. ; Hashimoto, Toshikazu ; Hashizume, Yasuaki ; Mizuno, Takayuki ; Goh, Takashi ; Takahashi, Hiroki
Author_Institution :
NTT Photonics Labs., NTT Corp., Atsugi, Japan
Abstract :
A compact polarisation-multiplexed differential quadrature phase-shift keying (DQPSK) demodulator achieved by integrating a polarisation beam splitter and two DQPSK demodulators consisting of a delay interferometer and a 90°-hybrid using silica-based planar lightwave circuit technology is demonstrated. The optical characteristics of the fabricated demodulator were sufficient for the direct detection of 100 Gbit/s polarisation-multiplexed DQPSK signals.
Keywords :
demodulators; differential phase shift keying; optical beam splitters; quadrature phase shift keying; compact polarisation-multiplexed differential quadrature phase-shift keying; delay interferometer; one-chip integrated polarisation-multiplexed DQPSK demodulator; polarisation beam splitter; silica-based planar lightwave circuit technology;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.1371
