公开(公告)号：WO1997002633A1

公开(公告)日：1997-01-23

申请号：PCT/JP1996001853

申请日：1996-07-04

Applicant: HITACHI, LTD. ,  NIPPON TELEGRAPH AND TELEPHONE CORPORATION ,  KOSAKA, Junya ,  SAKANO, Shinji ,  SATO, Yoshiaki ,  AIDA, Kazuo

Inventor： HITACHI, LTD. ,  NIPPON TELEGRAPH AND TELEPHONE CORPORATION

IPC: H01S03/10

CPC classification number: H04B10/2931 ,  H01S3/06754 ,  H01S3/1301 ,  H01S5/0683 ,  H01S5/06832 ,  H01S5/50 ,  H01S2301/06 ,  H03G3/3084

Abstract: A light amplifier having a simple arrangement in which control response is improved and light surge is decreased. In this arrangement, part of the output from a light amplification media (1) is passed through branching means (5) to means (6) for power detection. Based on the power detection, control means (7) controls at least one of an excitation source (2) and feedback means (4). The light from the branching means (3) is subjected to power control in the feedback means (4) and returned to the light amplification medium (1) through the branching means (3), so that the output from the light amplification medium (1) is kept at a desired power level while the occurrence of light surge is restricted. The present invention provides also a control method of the light amplification medium, and a system using the light amplifier.

Abstract translation: 具有简单布置的光放大器，其中控制响应得到改善并且光浪涌减小。 在这种布置中，来自光放大介质（1）的输出的一部分通过分支装置（5）传送到用于功率检测的装置（6）。 基于功率检测，控制装置（7）控制激励源（2）和反馈装置（4）中的至少一个。 来自分支装置（3）的光在反馈装置（4）中进行功率控制，并通过分支装置（3）返回到光放大介质（1），使得来自光放大介质（1）的输出 ）保持在期望的功率水平，同时光浪涌的发生被限制。 本发明还提供了光放大介质的控制方法和使用该光放大器的系统。