All-optical switch based on two-pump four-wave mixing in fibers without a frequency shift

Yu Tian; Xiaosheng Xiao; Shiming Gao; Changxi Yang

doi:10.1364/ao.46.005588

All-optical switch based on two-pump four-wave mixing in fibers without a frequency shift

Appl Opt. 2007 Aug 10;46(23):5588-92. doi: 10.1364/ao.46.005588.

Authors

Yu Tian¹, Xiaosheng Xiao, Shiming Gao, Changxi Yang

Affiliation

¹ State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing, China. Tianyu03@mails.tsinghua.edu.cn

PMID: 17694102
DOI: 10.1364/ao.46.005588

Abstract

We report an all-optical switch based on two-pump four-wave mixing in fibers. The switched signal is not shifted in frequency in this scheme. For different signal wavelengths, the pump wavelengths and powers can be optimized to achieve the best performance. The principle of how to design the switch is discussed in detail. A high extinction ratio of -60 dB is obtained when the pump parameters are optimized by a genetic algorithm that exhibits good convergence property and high computing efficiency. The effect of zero-dispersion wavelength fluctuations along the fiber on the switch is analyzed.