Title :
Monolithic demodulator for 40-gb/s DQPSK using a star coupler
Author :
Doerr, Christopher R. ; Gill, Douglas M. ; Gnauck, Alan H. ; Buhl, Lawrence L. ; Winzer, Peter J. ; Cappuzzo, Mark A. ; Wong-Foy, A. ; Chen, Evans Yifan ; Gomez, L.T.
Author_Institution :
Lucent Technol. Bell Labs., Holmdel, NJ, USA
Abstract :
A novel device that demodulates both quadratures of the optical differential quadrature phase-shift keying (DQPSK) format in a single interferometer by using a 4 × 4 star coupler was demonstrated. Simultaneous measurements of both DQPSK quadratures at 42.7 Gb/s are also presented.
Keywords :
demodulation; differential phase shift keying; integrated optoelectronics; light interferometry; monolithic integrated circuits; optical communication equipment; optical fibre communication; optical fibre couplers; quadrature phase shift keying; 40 Gbit/s; 42.7 Gbit/s; DQPSK; interferometer; monolithic demodulator; optical differential quadrature phase-shift keying; star coupler; Demodulation; Differential quadrature phase shift keying; Optical coupling; Optical feedback; Optical filters; Optical interferometry; Optical receivers; Optical sensors; Optical transmitters; Phase shift keying; Demodulation; integrated optics; phase coding;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.860476
