Monolithic demodulator for 40-gb/s DQPSK using a star coupler

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 /spl times/ 4 star coupler was demonstrated. Simultaneous measurements of both DQPSK quadratures at 42.7 Gb/s are also presented.

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Bibliographische Detailangaben
Veröffentlicht in:	Journal of lightwave technology 2006-01, Vol.24 (1), p.171-174
Hauptverfasser:	Doerr, C.R., Gill, D.M., Gnauck, A.H., Buhl, L.L., Winzer, P.J., Cappuzzo, M.A., Wong-Foy, A., Evans Yifan Chen, Gomez, L.T.
Format:	Artikel
Sprache:	eng
Schlagworte:	A stars Applied sciences Circuit properties Coding, codes Demodulation Demodulators Devices Differential quadrature phase shift keying Electric, optical and optoelectronic circuits Electronics Exact sciences and technology Information, signal and communications theory integrated optics Integrated optics. Optical fibers and wave guides Interferometers Joining Keying Modulation, demodulation Optical and optoelectronic circuits Optical coupling Optical feedback Optical filters Optical interferometry Optical receivers Optical sensors Optical transmitters phase coding Phase shift keying Quadratures Signal and communications theory Star couplers Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments)
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Beschreibung
Zusammenfassung:	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 /spl times/ 4 star coupler was demonstrated. Simultaneous measurements of both DQPSK quadratures at 42.7 Gb/s are also presented.
ISSN:	0733-8724 1558-2213
DOI:	10.1109/JLT.2005.860476