Recent Patents on Electrical Engineering

Huiyu Zhou  
Queen's University Belfast
United Kingdom


Recent Progress in High-Speed All-Optical Wavelength Converters Based on SOAs

Author(s): Gang Wang, Qiwei Weng, Xuelin Yang and Weisheng Hu

Affiliation: The State Key Laboratory of Advanced Optical Communication Systems and Networks, Department ofElectronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.

Keywords: Cross-gain modulation, cross-phase modulation, four-wave mixing, semiconductor optical amplifiers, Wavelength converter, polarization multiplexing signals, noise bandwidth., monolithic integration


Recent patents and progress on all-optical wavelength converters (WCs) based on semiconductor optical amplifiers (SOAs) are reviewed. Differential schemes utilizing the nonlinear optical effects of SOAs in the configurations such as the Mach-Zehnder interferometer (MZI), the delayed-interference signal-wavelength converter (DISC), detuned narrow filter and novel turbo-switch structure are discussed and compared, which overcome the limitation of operation speed of WCs due to the SOA recovery time(~100 ps). It is shown that, by using the chirp effect or turbo-switch schemes, the WCs can be operated at the range of 160-320Gb/s, which will be good candidates for the applications in the next generation all-optical fiber networks.

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Article Details

Page: [133 - 138]
Pages: 6
DOI: 10.2174/1874476111104020133