公开(公告)号：US20100067099A1

公开(公告)日：2010-03-18

申请号：US12619455

申请日：2009-11-16

Applicant: Youichi AKASAKA ,  Yoshihiro Emori ,  Shu Namiki

Inventor： Youichi AKASAKA ,  Yoshihiro Emori ,  Shu Namiki

IPC: H01S3/30 ,  H01S3/00

Abstract: A Raman amplifier according to the present invention comprises a plurality of pumping means using semiconductor lasers of Fabry-Perot, DFB, or DBR type or MOPAs, and pumping lights outputted from the pumping means have different central wavelengths, and interval between the adjacent central wavelength is greater than 6 nm and smaller than 35 nm. An optical repeater according to the present invention comprises the above-mentioned Raman amplifier and adapted to compensate loss in an optical fiber transmission line by the Raman amplifier. In a Raman amplification method according to the present invention, the shorter the central wavelength of the pumping light the higher light power of said pumping light. In the Raman amplifier according to the present invention, when a certain pumping wavelength is defined as a first channel, and second to n-th channels are defined to be arranged with an interval of about 1 THz toward a longer wavelength side, the pumping lights having wavelengths corresponding to the first to n-th channels are multiplexed, and an pumping light having a wavelength spaced apart from the n-th channel by 2 THz or more toward the longer wavelength side is combined with the multiplexed light, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-1)-th and (n-2)-th channels may be multiplexed, thereby forming the pumping light source. The pumping lights having wavelengths corresponding to the channels other than (n-2)-th and (n-3)-th channels may be multiplexed, thereby forming the pumping light source.

Abstract translation: 根据本发明的拉曼放大器包括使用Fabry-Perot，DFB或DBR型或MOPA的半导体激光器的多个泵浦装置，并且从泵送装置输出的泵浦光具有不同的中心波长，并且相邻中心波长 大于6nm且小于35nm。 根据本发明的光中继器包括上述拉曼放大器，并且用于补偿拉曼放大器在光纤传输线路中的损耗。 在根据本发明的拉曼放大方法中，泵浦光的中心波长越短，所述泵浦光的光功率越高。 在根据本发明的拉曼放大器中，当将一定的泵浦波长定义为第一通道时，并且将第二至第n通道限定为朝向较长波长侧以大约1THz的间隔布置，泵浦灯 具有对应于第一至第n通道的波长的多路复用，并且将具有与第n个信道间隔开2波长或更长的波长朝向较长波长侧的波长的泵浦光与多路复用光组合，从而形成泵浦 光源。 具有与第（n-1）和（n-2）通道以外的通道对应的波长的泵浦光可以被多路复用，从而形成泵浦光源。 具有与第（n-2）和（n-3）通道以外的通道对应的波长的泵浦光可以被多路复用，从而形成泵浦光源。

公开(公告)号：US07072369B2

公开(公告)日：2006-07-04

申请号：US10820771

申请日：2004-04-09

Applicant: Shunichi Matsushita ,  Shu Namiki ,  Yoshihiro Emori

Inventor： Shunichi Matsushita ,  Shu Namiki ,  Yoshihiro Emori

IPC: H01S3/13 ,  H01S3/30

CPC classification number: H01S5/146 ,  H01S3/094003 ,  H01S3/094073 ,  H01S3/302 ,  H01S5/06236

Abstract: The present invention provides the following designing method: in a laser diode module or a depolarized laser diode module which has one laser diode and one polarization maintaining fiber connected to the output side thereof, the length of the polarization maintaining fiber is a value obtained by calculation of equation 37 with use of a longitudinal mode spacing Δλoutput light from the Fabry Perot (FP) laser diode, an oscillating center wavelength λ0 of the laser light, a beat length LBeat 1 of the polarization maintaining fiber and an optical wavelength λBeat used in the measurement of the LBeat 1. (Equation 37) L Pig

Abstract translation: 本发明提供以下设计方法：在激光二极管模块或去极化激光二极管模块中，其具有连接到其输出侧的一个激光二极管和一个偏振保持光纤，所述偏振保持光纤的长度是通过计算获得的值 使用来自法布里珀罗（FP）激光二极管的纵向模式间隔Deltalλ输出光，激光的振荡中心波长λ<0>，拍子长度L < / SUB>和用于测量L“Beat 1”的光波长λ。 （公式37）