Comparison between MZI and single phase modulator for generating 112 Gbit/s PDM-QPSK signal

Junyi Wang; Kailu Gao; Lu Yang; Xuan He; Z. Pan

doi:10.1117/12.887400

18 February 2011 Comparison between MZI and single phase modulator for generating 112 Gbit/s PDM-QPSK signal

Junyi Wang, Kailu Gao, Lu Yang, Xuan He, Z. Pan

Proceedings Volume 7988, Optical Transmission Systems, Switching, and Subsystems VIII; 79881W (2011) https://doi.org/10.1117/12.887400
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China

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.

Citation Download Citation

Junyi Wang, Kailu Gao, Lu Yang, Xuan He, and Z. Pan "Comparison between MZI and single phase modulator for generating 112 Gbit/s PDM-QPSK signal", Proc. SPIE 7988, Optical Transmission Systems, Switching, and Subsystems VIII, 79881W (18 February 2011); https://doi.org/10.1117/12.887400

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