公开(公告)号：WO2008075633A1

公开(公告)日：2008-06-26

申请号：PCT/JP2007/074184

申请日：2007-12-10

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  OKUNO, Toshiaki

发明人： OKUNO, Toshiaki

IPC分类号： G02F1/383

CPC分类号： G02F1/3536 ,  G02F1/383

摘要： Provided is a wavelength converter capable of generating a converted signal having a wavelength different from the wavelength of input light. The wavelength converter of the present invention comprises: (1) a pump light source for outputting pump light; (2) a light multiplexing part for multiplexing the input light and the pump light and outputting thus multiplexed light; (3) and a plurality of optical fibers connected together in cascade, allowing the passage of the input light and the pump light thus multiplexed and output thereinto by the light multiplexing part, having mutually different zero dispersion wavelengths, and being capable of generating a converted signal by the nonlinear optical phenomenon occurring during the passage of the input light and the pump light. The wavelength conversion efficiency of the sidebands is less than -20 dB relative to the maximum value of the wavelength conversion efficiency in the entirety of the plurality of optical fibers.

摘要翻译： 提供了能够产生具有与输入光的波长不同的波长的转换信号的波长转换器。 本发明的波长转换器包括：（1）用于输出泵浦光的泵浦光源; （2）光复用部分，用于多路复用输入光和泵浦光，并输出这样复用的光; （3）和多个串联连接在一起的光纤，允许由光复用部分经过多路复用并输出的输入光和泵浦光通过，具有相互不同的零色散波长，并且能够产生转换 通过在输入光和泵浦光通过期间发生的非线性光学现象来发出信号。 相对于整个多根光纤中的波长转换效率的最大值，边带的波长转换效率小于-20dB。

公开(公告)号：WO2004079951A1

公开(公告)日：2004-09-16

申请号：PCT/JP2004/002777

申请日：2004-03-04

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  MIYAMOTO, Toshiyuki ,  TANAKA, Masato ,  OKUNO, Toshiaki ,  KOBAYASHI, Junko ,  SHIGEMATSU, Masayuki ,  NISHIMURA, Masayuki

发明人： MIYAMOTO, Toshiyuki ,  TANAKA, Masato ,  OKUNO, Toshiaki ,  KOBAYASHI, Junko ,  SHIGEMATSU, Masayuki ,  NISHIMURA, Masayuki

IPC分类号： H04B10/17

CPC分类号： H04B10/2916 ,  H01S3/302

摘要： The present invention relates to an optical transmission system having a structure to enable signal transmission while maintaining superior transmission characteristics over a broader wavelength band. Signal light outputted from a signal light source has a positive chirp, and propagates through a transmission line fiber to an optical receiver, after being Raman­amplified by a lumped Raman amplifier. The lumped Raman amplifier includes, as a Raman amplification fiber, a high-nonlinearity fiber having a negative chromatic dispersion at a wavelength of the signal light and intentionally generating a self-phase modulation therein. The positive chirp of the signal light propagatinq through the high-nonlinearity fiber is effectively compensated by both of the negative chromatic dispersion and the self-phase modulation generated in the high-nonlinearity fiber.

摘要翻译： 本发明涉及一种光传输系统，其具有能够在较宽波长带上保持优良传输特性的信号传输结构。 从信号光源输出的信号光通过集中拉曼放大器进行拉曼放大后具有正的线性调频脉冲，并通过传输线光纤传播到光接收机。 集总拉曼放大器包括作为拉曼放大光纤的高非线性光纤，其在信号光的波长处具有负色散，并有意地在其中产生自相位调制。 通过高非线性光纤的信号光传播的正啁啾由高非线性光纤中产生的负色散和自相位调制两者有效地补偿。