公开(公告)号：WO1997039460A1

公开(公告)日：1997-10-23

申请号：PCT/US1997004826

申请日：1997-03-24

Applicant: ATX TELECOM SYSTEMS, INC.

Inventor： ATX TELECOM SYSTEMS, INC. ,  BENNETT, Kevin, W. ,  SWEENEY, Kevin, L.

IPC: H01C03/06

CPC classification number: H01S3/094003 ,  G02B6/4457 ,  H01S3/0078 ,  H01S3/06704 ,  H01S3/06754 ,  H01S3/094053 ,  H01S3/09415

Abstract: A laser diode pump source (26) is disclosed for pumping a gain medium (22) in a fiber optic amplifier (20). The high wavelength emission of the gain medium (22) is prevented from being transmitted back to the laser diode (26) which would otherwise cause severe degradation or catastrophic damage. In addition to the laser diode (26) for generating a pump wave, the pump source includes an optical fiber filter (28) preferably formed as a coil of single mode optical fiber (28). The coil (28) has a bend radius made sufficiently small such that the optical fiber filter (28) exhibits significant losses at the higher wavelength of the emission of the gain medium (22), but exhibits low insertion loss at the lower pump wavelength. The coil (28) allows the pump wave to pass through for pumping the gain medium (22), but substantially attenuates the back-transmitted emission generated by the gain medium (22).

Abstract translation: 公开了一种用于泵浦光纤放大器（20）中的增益介质（22）的激光二极管泵浦源（26）。 增强介质（22）的高波长发射被防止被传输回激光二极管（26），否则会导致严重的劣化或灾难性的损坏。 除了用于产生泵浦波的激光二极管（26）之外，泵浦源包括优选地形成为单模光纤（28）的线圈的光纤滤波器（28）。 线圈（28）具有足够小的弯曲半径，使得光纤滤波器（28）在增益介质（22）的发射的较高波长处表现出显着的损耗，但是在较低的泵浦波长处表现出低的插入损耗。 线圈（28）允许泵浦波通过用于泵浦增益介质（22），但是基本上衰减由增益介质（22）产生的反向发射的发射。