An all-optical, XOR logic gate for high-speed RZ-DPSK signals by FWM in semiconductor optical amplifier

被引：92

作者：

Deng, Ning ^{[1
]}

Chan, Kit ^{[1
]}

Chan, Chun-Kit ^{[1
]}

Chen, Lian-Kuan ^{[1
]}

机构：

[1] Chinese Univ Hong Kong, Dept Informat Engn, Hong Kong, Hong Kong, Peoples R China

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 2006年 / 12卷 / 04期

关键词：

all-optical logic gate; differential phase-shift keying (DPSK); exclusive OR (XOR); four-wave mixing (FWM); optical signal processing; semiconductor optical amplifier (SOA);

D O I：

10.1109/JSTQE.2006.876603

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

All-optical exclusive-OR (XOR) logic gate is a basic and crucial element for optical signal processing. We propose and demonstrate a novel high-speed all-optical XOR gate based on four-wave mixing (FWM) in a semiconductor optical Amplifier, with optical return-to-zero differential phase-shift keying (RZ-DPSK) input signals. With this constant-envelope modulation format, the patterning effect-induced signal degradation in semiconductor optical amplifier (SOA) is alleviated. The proposed XOR gate can accommodate both two-input and three-input logic operations, which offer better flexibility for cascaded all-optical processing Experimental demonstrations at 10- and 20-Gb/s verified the logic integrity of the proposed XOR gate. In addition, the XOR output tolerance against temporal misalignment among the data inputs is also experimentally investigated.

引用

页码：702 / 707

页数：6

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