Suppression of cross-gain modulation in SOA using RZ-DPSK modulation format

被引：44

作者：

Cho, PS ^{[1
]}

Khurgin, JB

机构：

[1] CeLight Inc, Silver Spring, MD 20904 USA

[2] Johns Hopkins Univ, Dept Elect & Comp Engn, Baltimore, MD 21218 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2003年 / 15卷 / 01期

关键词：

crosstalk; differential phase-shift keying (DPSK); phase-shift keying; semiconductor optical amplifiers (SOAs); wavelength-division multiplexing;

D O I：

10.1109/LPT.2002.805795

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：

Conventional ON-OFF keyed modulation format is susceptible to cross-gain modulation in saturated semiconductor optical amplifier (SOA) that leads to crosstalk penalty for dense wavelength-division-multiplexing (DWDM) input signals. Differential phase-shift keying of optical pulses have virtually no pulse-pattern effect and are robust to cross-gain modulation. We report experimental results that confirm reduction of crosstalk penalty in SOA with differential phase-shift-keyed DWDM input signals in comparison with ON-OFF keyed signals operating at 12.5 Gb/s with 25-GHz channel spacing.

引用

页码：162 / 164

页数：3

共 11 条

[1] Coherent crosstalk in multichannel FSK/DD lightwave systems due to four-wave mixing in semiconductor optical amplifiers [J].