Numerical simulation of all-optical wavelength conversion of DPSK signal based on SOA in a Mach-Zehnder configuration

Wei Hong; Minghao Li; Dexiu Huang; Xinliang Zhang; Guangxi Zhu

doi:10.1117/12.804314

18 November 2008 Numerical simulation of all-optical wavelength conversion of DPSK signal based on SOA in a Mach-Zehnder configuration

Wei Hong, Minghao Li, Dexiu Huang, Xinliang Zhang, Guangxi Zhu

Author Affiliations +

Proceedings Volume 7135, Optoelectronic Materials and Devices III; 71354D (2008) https://doi.org/10.1117/12.804314
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

All-optical wavelength conversion of differential phase-shift keyed (DPSK) signals based on SOA in a Mach-Zehnder interferometer (SOA-MZI) configuration is simulated and analyzed using the transfer function of MZI and a wideband dynamic model of SOA. The operation principle is analyzed and operation point selection, influence of SOA physical parameters, different signal format and operation speed are discussed in detail. The results of 10Gb/s operation show that SOA-MZI is compatible with both non-return-to-zero (NRZ) and return-to-zero (RZ) formatted signals. However, the conversion performance is sensitive to the operation point of the involved SOAs. To maximize the Q value of the demodulated conversion signal, the power and wavelength of the original DPSK signal and the probe light should be optimized to obtain approximately π phase difference between the upper and lower arms of MZI in the middle of each bit. Besides, SOA with short carrier lifetime and large linewidth enhancement factor is preferred for wavelength conversion applications. 40Gb/s operation is also simulated with SOA carrier lifetime of 100ps, and the results strongly suggests 40Gb/s operation with RZ formatted signals and relatively large input powers of the clock signal.

Citation Download Citation

Wei Hong, Minghao Li, Dexiu Huang, Xinliang Zhang, and Guangxi Zhu "Numerical simulation of all-optical wavelength conversion of DPSK signal based on SOA in a Mach-Zehnder configuration", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71354D (18 November 2008); https://doi.org/10.1117/12.804314

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