摘要
提出了一种新型全光半减器组合逻辑方案。该方案基于两个半导体光放大器(SOA)和窄带光滤波器(NOBPF)。利用SOA的四波混频(FWM)和交叉增益调制(XGM)效应,通过调整NOBPF的中心波长,第一个SOA产生逻辑"A·B"门,提供半减器的"借位",同时该SOA产生"同或"逻辑;第二个SOA产生"非"逻辑,两个SOA级联后产生逻辑"异或"门,提供半减器的"差"位。实验中,实现了两路10 Gb/s伪随机归零(RZ)码信号间的全光半减逻辑运算。
A novel all-optical half-subtracter combination logic scheme is demonstrated, based on two semiconductor optical amplifiers (SOA) and three narrow optical bandpass filters (NOBPF). By utilizing four-wave mixing (FWM), cross-gain modulation (XGM) in the SOA and through adjusting narrow optical bandpass filter central wavelength, the first SOA generates A^- · B logic and provides borrow bit of half-subtracter, simultaneously the SOA generates XNOR logic; the second SOA generates NOT logic, two cascaded SOAs engender XOR logic and provides difference bit of half-subtracter. In the experiment, all-optical half-subtraction Boolean calculation is achieved between 10 Gb/s PRBS signals.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2009年第8期2082-2086,共5页
Acta Optica Sinica
基金
国家自然科学基金(60572013)
国家自然科学基金重点项目(60736035)
国家863计划(2007AA01Z272)
天津市自然科学基金(06YFJMJC01400)
教育部新世纪人才计划(NCET-06-0248)支持资助课题
关键词
光通信
全光半减器
半导体光放大器
四波混频
交叉增益调制
optical communication
all-optical half-subtracter
semiconductor optical amplifier (SOA)
four-wave mixing (FWM)
cross-gain modulation (XGM)