公开(公告)号：KR100398361B1

公开(公告)日：2003-09-19

申请号：KR1020010073039

申请日：2001-11-22

Applicant: 한국전자통신연구원

Inventor： 이정찬 ,  정희상 ,  주무정 ,  이종현

IPC: G02B6/00

CPC classification number: H01S3/06758 ,  H01S3/094011 ,  H01S2301/04

Abstract: Disclosed herein is an Erbium-Doped Fiber Amplifier (EDFA) used in a WDM (Wavelength Division Multiplexing) transmission system. In accordance with the present invention, a variation of the intensity of the output optical signal in the optical fiber amplifier, which results from an gain imbalance due to different wavelength distribution caused by the gain inhomogeneity characteristics, can be prevented by examining the laser diode sensitive to the gain inhomogeneity characteristics in the erbium-doped optical fiber amplifier, constructing the filter having spectrum characteristics capable of suppressing the gain imbalance of the optical signal outputted from the optical fiber amplifier, and driving the sensitive laser diode using the electrical signal obtained by branching some of the input optical signal and passing the branched optical signal through the filter and driving other laser diodes with a constant voltage value.

Abstract translation: 本文公开了用于WDM（波分复用）​​传输系统中的掺铒光纤放大器（EDFA）。 根据本发明，可以通过检查激光二极管敏感度来防止光纤放大器中输出光信号强度的变化，该变化是由于增益不均匀性特性引起的不同波长分布引起的增益不平衡所引起的 增益掺铒光纤放大器中的增益不均匀特性，构造具有能够抑制从光纤放大器输出的光信号的增益不平衡的光谱特性的滤波器，以及使用通过分支获得的电信号来驱动灵敏激光二极管 输入光信号的一部分，并将分支的光信号通过滤波器并驱动其他具有恒定电压值的激光二极管。

公开(公告)号：KR1020000024927A

公开(公告)日：2000-05-06

申请号：KR1019980041731

申请日：1998-10-02

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 김향균 ,  박서연 ,  주무정

IPC: G02B6/02

Abstract: PURPOSE: A method for leveling a gain is provided to enhance a transmission performance of an optical transmission system through the leveling of a wavelength bandwidth by using optical fiber gratings of a short period. CONSTITUTION: Optical fiber gratings of different periods are consecutively connected to control wavelength bands. A reflection ratio is controlled in each wavelength to control a permeation spectrum of a filter. The reflection ratio is controlled according to a period of the gratings, strength, and the number of the gratings. Changes of a periodic refraction index are induced in an optical fiber. A signal light of a particular wavelength with respect to incident light is reflected and permeated, to thereby a level of a gain with respect to a wavelength change of incident signal light

Abstract translation: 目的：提供一种用于调平增益的方法，通过使用短周期的光纤光栅，通过波长带宽调平来提高光传输系统的传输性能。 构成：不同时期的光纤光栅连续地连接到控制波长带。 在每个波长中控制反射比以控制滤光片的透过光谱。 根据光栅的周期，强度和光栅的数量来控制反射率。 在光纤中引起周期性折射率的变化。 相对于入射光的特定波长的信号光被反射和透过，从而相对于入射信号光的波长变化的增益水平

公开(公告)号：KR100114419B1

公开(公告)日：1997-04-17

申请号：KR1019930026135

申请日：1993-12-01

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 주무정

IPC: H04B10/29

公开(公告)号：KR1019960007890B1

公开(公告)日：1996-06-15

申请号：KR1019930012773

申请日：1993-07-07

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 주무정

IPC: G02B26/00

Abstract: The optical attenuator is designed to control the attenuation rate by winding or unwinding optical fibers(4). The optical attenuator comprises an optical fiber receiving space(11), an optical connector receiving space(12), a body(1) consisted of a connector hole(12), a spool means(2) rotating in the receiving space(12), optical connectors(3,3') located in the receiving space(12) and mounted in the connector holes(13), the optical fibers(4) wound around the spool, a spool hole(51), a cover(5) which covers the receiving spaces(11,12) of the body, and a lever(6) which rotates the spool means(2).

Abstract translation: 光衰减器被设计成通过缠绕或退绕光纤来控制衰减率（4）。 光衰减器包括光纤接收空间（11），光连接器接收空间（12），由连接孔（12）构成的主体（1），在接收空间（12）中旋转的卷轴装置（2） 位于所述接收空间（12）中并安装在所述连接器孔（13）中的光学连接器（3,3'），缠绕在所述卷轴上的所述光纤（4），卷轴孔（51），盖（5） 其覆盖主体的接收空间（11,12），以及使卷轴装置（2）旋转的杆（6）。