基于PolSK调制格式的FWM型全光比较器
An all-optical comparator based on PolSK modulation format and FWM in semiconductor optical amplifier
摘要
文章提出了一种利用偏振移位键控(PolSK)信号光, 基于半导体光放大器(SOA)中的四波混频(FWM)效应的超快全光比较器方案。该方案由于采用了功率恒定的PolSK信号光, 可以消除SOA中的码型效应。通过数值模拟, 研究了两输入信号光功率、SOA注入电流以及有源区长度对超快全光比较器输出特性的影响。
Abstract
A novel scheme for an ultrahigh-speed all-optical comparator based on the Four-Wave Mixing (FWM) effects in Semiconductor Optical Amplifiers (SOAs) is proposed, by which can eliminate the pattern effects in SOAs by using the power-constant Polarization-Shift-Keying (PolSK) signal light. By numerical simulation, two input signal power, injection current and the effects of the active region length on the comparator output characteristics are investigated.
纪鹏辉, 李培丽, 施伟华, 吴杨. 基于PolSK调制格式的FWM型全光比较器[J]. 光通信研究, 2009, 35(4): 57. Ji Penghui, Li Peili, Shi Weihua, Wu Yang. An all-optical comparator based on PolSK modulation format and FWM in semiconductor optical amplifier[J]. Study On Optical Communications, 2009, 35(4): 57.
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