公开(公告)号：US07248804B2

公开(公告)日：2007-07-24

申请号：US10892241

申请日：2004-07-16

申请人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/16

CPC分类号： H04B10/2931

摘要： Conventionally, an adjustment of an optical power level of an input Pin of an optical amplifier module is made with an optical variable attenuator. An optical coupler for measuring the optical power level of Pin and an optical variable attenuator are replaced by a variable optical coupler. The branch ratio of the variable optical coupler is varied, whereby the input optical power level Pin to an optical amplifier module is adjusted. As a result, an optical loss is reduced by an amount corresponding to the elimination of the optical attenuator, and also the OSNR of the optical amplifier module is improved.

摘要翻译： 通常，利用光可变衰减器对光放大器模块的输入Pin的光功率电平进行调整。 用于测量Pin和光可变衰减器的光功率电平的光耦合器由可变光耦合器代替。 改变可变光耦合器的分支比例，从而调整到光放大器模块的输入光功率电平Pin。 结果，光损耗减少了对应于光衰减器的消除量，并且光放大器模块的OSNR也得到改善。

公开(公告)号：US06760150B2

公开(公告)日：2004-07-06

申请号：US10097401

申请日：2002-03-15

申请人： Ryosuke Goto ,  Taizo Maeda ,  Kazuo Yamane

发明人： Ryosuke Goto ,  Taizo Maeda ,  Kazuo Yamane

IPC分类号： H01S300

CPC分类号： H01S3/06758 ,  H01S3/10069 ,  H01S3/1301 ,  H01S3/302 ,  H01S2301/02

摘要： An optical transmitting apparatus having a first optical amplifier by which quality of an output optical signal after amplified is changed according to an amplification gain, a second optical amplifier by which quality of an output optical signal after amplified is changed according to an input level of an output optical signal from the first optical amplifier, and a controlling means for performing an adaptive control on an amplification gain of the first optical amplifier so that quality of an output optical signal from the second optical amplifier becomes maximum, thereby optimizing signal quality in the optical transmitting apparatus in a hybrid optical amplifier structure.

摘要翻译： 一种光发送装置，具有第一光放大器，放大后的输出光信号的质量根据放大增益而改变，第二光放大器，放大后的输出光信号的质量根据放大增益的输入电平而变化 输出来自第一光放大器的光信号，以及控制装置，用于对第一光放大器的放大增益执行自适应控制，使得来自第二光放大器的输出光信号的质量变为最大，从而优化光信号中的信号质量 发送装置。