Estimation of BER performance and cascadability of wavelength converters based on cross-gain modulation in semiconductor optical amplifiers

作     者：Obermann, K Petermann, K 

作者机构：Tech Univ Berlin Inst Hochfrequenztech D-10587 Berlin Germany 

出 版 物：《IEE PROCEEDINGS-OPTOELECTRONICS》 (IEE Proc Optoelectron)

年 卷 期：2000年第147卷第2期

页      面：133-137页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：negative penalties 2.5 Gbit/s optical frequency conversion statistical analysis down-shifted extinction ratio laser theory wavelength shift up-shifted optical wavelength converters computer simulations BER performance Multiplexing and switching in optical communication bit error rates power penalty semiconductor device models cascadable wavelength converters laser noise cascadability wavelength division multiplexing nonlinear transmission function electro-optical modulation Lasing action in semiconductors cross-gain modulation semiconductor optical amplifiers Probability and statistics Semiconductor lasers Optical harmonic generation, frequency conversion, parametric oscillation and amplification input dynamic range Semiconductor device modelling, equivalent circuits, design and testing Probability theory, stochastic processes, and statistics noise statistics 

摘      要：The transmission of the input intensity noise for wavelength converters based on cross-gain modulation in semiconductor optical amplifiers is investigated theoretically It is shown how the noise statistics change due to the nonlinear transmission function and how bit error rates can be estimated. The power penalty strongly depends on the wavelength shift and can be 5.2 dB at 2.5 Gbit/s when the wavelength is up-shifted by 20 nm. When the extinction ratio is enhanced by the converter, even negative penalties are obtainable. In agreement with computer simulations, the input dynamic range is determined to be at least 13 dB. Furthermore, it is demonstrated that at 2.5 Gbit/s, 62 wavelength converters can be cascaded when each converter is operated so that the extinction ratio is preserved. However, when the wavelength is alternatively down-and up-shifted by 15 nm, less than eight stages are cascadable.