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Proceedings Paper

Comparison between MZI and single phase modulator for generating 112 Gbit/s PDM-QPSK signal
Author(s): Junyi Wang; Kailu Gao; Lu Yang; Xuan He; Z. Pan
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Paper Abstract

We demonstrated the QPSK signal generated by a single phase-modulator (PM-QPSK) is more tolerant to nonlinearity than that generated by the Mach Zehnder Interferometer (MZI-QPSK). With simulation of WDM system at 28 Gsymbol/s per polarization the performance of PM-QPSK and MZI-QPSK are compared when dispersion management is used. After 800 km's transmission in single-polarization transmission system, MZI-QPSK outperforms PM-QPSK because of its better tolerance to ISI. After 400 km's transmission in polarization multiplexing system, PM-QPSK outperforms MZI-QPSK by comparing the symbol error ratio with optimized launch power, which is because PM-QPSK has better nonlinearity tolerance in dispersion managed system.

Paper Details

Date Published: 18 February 2011
PDF: 6 pages
Proc. SPIE 7988, Optical Transmission Systems, Switching, and Subsystems VIII, 79881W (18 February 2011); doi: 10.1117/12.887400
Show Author Affiliations
Junyi Wang, Univ. of Louisiana at Lafayette (United States)
Kailu Gao, Univ. of Louisiana at Lafayette (United States)
Lu Yang, Univ. of Louisiana at Lafayette (United States)
Xuan He, Univ. of Louisiana at Lafayette (United States)
Z. Pan, Univ. of Louisiana at Lafayette (United States)


Published in SPIE Proceedings Vol. 7988:
Optical Transmission Systems, Switching, and Subsystems VIII
Yikai Su; Ernesto Ciaramella; Xiang Liu; Naoya Wada, Editor(s)

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