Enhancement of pump conversion efficiency in preamplified L-band erbium-doped fiber amplifiers

被引：2

作者：

Hung, CY ^{[1
]}

Wang, LK ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Inst Photon Technol, Hisnchu 300, Taiwan

来源：

OPTICS COMMUNICATIONS | 2006年 / 259卷 / 02期

关键词：

L-band erbium-doped fiber amplifiers; preamplifier; backward ASE; pump conversion efficiency;

D O I：

10.1016/j.optcom.2005.09.036

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new configuration of L-band erbium-doped fiber amplifiers (EDFAs) is presented here. The system contains a double-pass L-band EDFA and an optical preamplifier. Different from conventional preamplified double-pass L-band EDFA systems in which only the forward ASE of the preamplifier is re-used as an auxiliary pump, the new system recycles the backward ASE of the preamplifier as well. Two kinds of main L-band EDFAs are studied, both of which include a section of un-pumped erbium-doped fiber placed in a loop reflector. An improvement of up to 110% in pump conversion efficiency is demonstrated with the proposed recycling of the backward ASE, with respect to the system without recycling. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：670 / 675

页数：6

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