Simulation for all-optical format conversion from NRZ-DPSK to RZ-DPSK

Abstract

We propose and simulate a simple scheme of all-optical format conversion from non-return-to-zero differential phase-shift keying (NRZ-DPSK) to return-to-zero differential phase-shift keying (RZ-DPSK) by using phase modulators and detuning filters. The operation principle is theoretically analyzed and simulated by exploiting spectra, temporal waveform and eye diagram with commerical optical design software VPI Transmission Maker 8.5. The use of electrical clock recovery and linear phase modulation in the conversion scheme may be potiental in practise use.

Keywords

format conversion / differential phase-shift keying (DPSK) / all-optical processing

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 61007042), the National Basic Research Program of China (No. 2011CB301704) and the State Key Laboratory of Advanced Optical Communication Systems and Networks (No. 2008SH10).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg