Recent Progress in High-Speed All-Optical Wavelength Converters Based on SOAs
Gang Wang, Qiwei Weng, Xuelin Yang and Weisheng Hu
Pages 133-138 (6)
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.
Cross-gain modulation, cross-phase modulation, four-wave mixing, semiconductor optical amplifiers, Wavelength converter, polarization multiplexing signals, noise bandwidth., monolithic integration
The State Key Laboratory of Advanced Optical Communication Systems and Networks, Department ofElectronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.