Method for controlling optical gain profiles

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	Method for controlling optical gain profiles
其他题名	Method for controlling optical gain profiles
	TAKASHINA, KIYOAKI, KDDI SUBMARINE CABLE SYS. INC.; KAWAZAWA,THOSHIO, KDDI SUBMARINE CABLE SYS. INC.; GOTO, KOJI, KDDI SUBMARINE CABLE SYS. INC.
	2003-12-17
专利权人	MITSUBISHI DENKI KABUSHIKI KAISHA
公开日期	2003-12-17
授权国家	欧洲专利局
专利类型	发明申请
摘要	To control a gain profile in an optical fiber line to become a desirable form, a C-OTDR measuring apparatus (36) outputs a probe pulse light having a wavelength λm for an optical fiber line (14). A power level on the input or output side of a variable gain equalizer (22) can be measured according to a C-OTDR waveform of a return light of the probe pulse light entered through a C-OTDR path (20c) and an optical fiber line (16). By sweeping the measurement wavelength λm, the gain file is measured. The equalizing characteristics of the variable gain equalizer (22) are remotely controlled so that the gain profile becomes a desirable form according to the measured result.
其他摘要	为了控制光纤线路中的增益分布以成为期望的形式，C-OTDR测量设备（36）输出具有用于光纤线路（14）的波长λm的探测脉冲光。可变增益均衡器（22）的输入或输出侧的功率电平可以根据通过C-OTDR路径（20c）和光纤进入的探测脉冲光的返回光的C-OTDR波形来测量。第（16）行。通过扫描测量波长λm，测量增益文件。可变增益均衡器（22）的均衡特性被远程控制，使得增益分布根据测量结果变为期望的形式。
主权项	In an optical transmission system having first and second optical fiber lines (14, 16; 114, 116), each transmits a signal light in the opposite direction from the other, and an optical loop back circuit (20c; 120c) for optically connecting between the first and second optical fiber lines, a method for measuring a gain profile in the first optical fiber line comprising steps of: supplying a plurality of laser lights, each having a different wavelength (λ1 to λn), and a probe pulse light having a measurement wavelength (λm) different from the wavelengths of the plurality of laser lights to the first optical fiber line; measuring a power level of the probe pulse light on a predetermined position in the first optical fiber line from a return light of the probe pulse light entered through the optical loop back circuit (20c; 120c) and second optical fiber line (16; 116); and performing the supplying and measuring steps while varying the measurement wavelength within the predetermined wavelength range.
申请日期	2003-05-14
专利号	EP1372272A2
专利状态	失效
申请号	EP2003010830
公开（公告）号	EP1372272A2
IPC 分类号	G01M11/00 \| H04B10/035 \| H04B10/07 \| H04B10/071 \| H04B10/29 \| H04B10/293 \| H04B10/294 \| H04B10/297 \| H04B10/564 \| H04B10/572 \| H04J14/00 \| H04J14/02 \| H04B10/08
专利代理人	-
代理机构	SCHAUMBURG, THOENES & THURN
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/62486
专题	半导体激光器专利数据库
作者单位	MITSUBISHI DENKI KABUSHIKI KAISHA
推荐引用方式 GB/T 7714	TAKASHINA, KIYOAKI, KDDI SUBMARINE CABLE SYS. INC.,KAWAZAWA,THOSHIO, KDDI SUBMARINE CABLE SYS. INC.,GOTO, KOJI, KDDI SUBMARINE CABLE SYS. INC.. Method for controlling optical gain profiles. EP1372272A2[P]. 2003-12-17.

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