Code-division multiple-access encoding and decoding of femtosecond optical pulses over a 2.5-km fiber link

被引：38

作者：

Chang, CC ^{[1
]}

Sardesai, HP ^{[1
]}

Weiner, AM ^{[1
]}

机构：

[1] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1998年 / 10卷 / 01期

基金：

美国国家科学基金会;

关键词：

CDMA; coding; dispersion compensation; nonlinear thresholder; optical network; pulse shaping;

D O I：

10.1109/68.651153

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：

We report for the first time proof-of-concept transmission experiments for femtosecond pulse code division multiple access (CDMA) operating over kilometer lengths of optical fiber in the 1.5-mu m communication band. Our CDMA link consists of a femtosecond mode-locked Er-fiber laser and two chirped pulse fiber amplifiers, a pair of low-loss fiber-pigtailed pulse shapers for encoding and decoding, a 2.5-km dispersion-compensated transmission fiber, and an ultrafast nonlinear optical receiver. Our results demonstrate high fidelity transmission of spectrally encoded femtosecond pulses over 2.5 km of fiber, followed by the use of the nonlinear CDMA receiver to discriminate between correctly and incorrectly decoded signals with 20-dB contrast.

引用

页码：171 / 173

页数：3

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