文章基本信息

标题：Effect of Optical Delay on the Suppression of the Power Transient Excursion in a Combined Gain-Controlled Erbium-Doped Fiber Amplifier
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作者：Chung, Hee-Sang ; Chang, Sun-Hyok ; Park, Heuk 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2003
卷号：25
期号：6
页码：531-531
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：This report describes the effect of optical delay on the suppression of the power transient excursion in a combined gain-controlled erbium-doped fiber amplifier with an internal optical feedback loop (OFL). A simple homogeneous model showed that the optical delay caused a phase change in the oscillation of the surviving and laser channels, which resulted in a reduction of the overall power transient excursion. In addition to the reduction, a real system with a 1528.7-nm OFL shifted the oscillation upward or downward according to channel removal or addition, whereas another one with a 1560.9-nm OFL did not. This different transient behavior reflected a control-wavelength dependence on optical automatic gain control, where spectral-hole burning dominated over relaxation oscillation for 1528.7 nm, and vice versa for 1560.9 nm.
关键词：Optical delay;power transient;gain control;EDFA