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Titolo:
Optimizing the bias and modulation voltages of MQW Mach-Zehnder modulatorsfor 10 Gb/s transmission on nondispersion shifted fiber
Autore:
Cartledge, JC;
Indirizzi:
Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada Queens Univ Kingston ON Canada K7L 3N6 Engn, Kingston, ON K7L 3N6, Canada
Titolo Testata:
JOURNAL OF LIGHTWAVE TECHNOLOGY
fascicolo: 7, volume: 17, anno: 1999,
pagine: 1142 - 1151
SICI:
0733-8724(199907)17:7<1142:OTBAMV>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
STANDARD DISPERSIVE FIBER; PROPAGATION PERFORMANCE; DFB LASER; 1.55-MU-M; 10GBIT/S; GBIT/S;
Keywords:
Mach-Zehnder optical modulator; modulator chirp; optical communications; transmission system performance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Cartledge, JC Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada Queens Univ Kingston ON Canada K7L 3N6 , ON K7L 3N6, Canada
Citazione:
J.C. Cartledge, "Optimizing the bias and modulation voltages of MQW Mach-Zehnder modulatorsfor 10 Gb/s transmission on nondispersion shifted fiber", J LIGHTW T, 17(7), 1999, pp. 1142-1151

Abstract

The chirp and optical extinction ratio of a multiple quantum-well (MQW) Mach-Zehnder modulator depend on the device design and on the voltage waveforms applied to the arm electrodes. For 10 Gb/s transmission over nondispersion shifted fiber, joint optimization of the bias and modulation voltages isconsidered for a conventional modulator and a Ti-phase-shift modulator. Measured attenuation and phase constants for an optical signal propagating inthe modulator waveguide are used to accurately model the Mach-Zehnder modulators. The influence of asymmetric Y-branch waveguides in the modulators is examined taking into consideration group velocity dispersion and self-phase modulation arising from the Kerr nonlinearity. When the modulators are operated with maximum optical extinction ratio, the dispersion limited transmission distance depends on the device design (phase-shift and Y-branch splitting ratio) and modulation format (dual drive or single drive), Optimization of the bias and modulation voltages reduces this dependence significantly, while also increasing the dispersion limited transmission distance.

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Documento generato il 13/07/20 alle ore 11:09:25