公开(公告)号：US07466478B2

公开(公告)日：2008-12-16

申请号：US11079426

申请日：2005-03-15

申请人： Takuji Maeda ,  Haruki Tanaka ,  Hisayuki Ojima ,  Hiroaki Tomofuji ,  Hideaki Sugiya ,  Koji Batou

发明人： Takuji Maeda ,  Haruki Tanaka ,  Hisayuki Ojima ,  Hiroaki Tomofuji ,  Hideaki Sugiya ,  Koji Batou

IPC分类号： H04B10/17

CPC分类号： H04J14/0297 ,  H04B10/296 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0291 ,  H04J14/0295

摘要： An optical-level control apparatus includes a plurality of variable optical attenuators each used for attenuating an input optical signal included in a wavelength division multiplexing signal as a component having a specific wavelength by applying a variable attenuation quantity, a plurality of control units each used for executing automatic control for automatically controlling the attenuation quantity in order to adjust the optical level of an optical signal output by a corresponding one of the variable optical attenuators to a target level in an ordinary normal state of the input optical signal, and a detection unit for detecting a loss of light failure of an optical signal input to each of the variable optical attenuators and detecting disappearance of the loss of light failure. When the detection unit detects the loss of light failure, a corresponding one of the control units executes first attenuation quantity locking control to adjust the attenuation quantity to a first predetermined value and as the detection unit detects the disappearance of the loss of light, the corresponding control unit executes second attenuation quantity locking control to adjust the attenuation quantity to a second predetermined value.

摘要翻译： 光学级控制装置包括多个可变光衰减器，每个可变光衰减器用于通过施加可变衰减量来衰减包括在波分复用信号中的输入光信号作为具有特定波长的分量;多个控制单元，每个用于 执行用于自动控制衰减量的自动控制，以便在输入光信号的普通正常状态下将由相应的一个可变光衰减器输出的光信号的光学电平调整到目标电平;以及检测单元， 检测输入到每个可变光衰减器的光信号的光衰的损失，并检测光故障损失的消失。 当检测单元检测到光损失时，对应的一个控制单元执行第一衰减量锁定控制，以将衰减量调整到第一预定值，并且随着检测单元检测到光损失的消失，相应的 控制单元执行第二衰减量锁定控制以将衰减量调整到第二预定值。

公开(公告)号：US20050168806A1

公开(公告)日：2005-08-04

申请号：US11079426

申请日：2005-03-15

申请人： Takuji Maeda ,  Haruki Tanaka ,  Hisayuki Ojima ,  Hiroaki Tomofuji ,  Hideaki Sugiya ,  Koji Batou

发明人： Takuji Maeda ,  Haruki Tanaka ,  Hisayuki Ojima ,  Hiroaki Tomofuji ,  Hideaki Sugiya ,  Koji Batou

IPC分类号： H01S3/00 ,  H04B10/17 ,  H04J14/02

CPC分类号： H04J14/0297 ,  H04B10/296 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0291 ,  H04J14/0295

摘要： An optical-level control apparatus includes a plurality of variable optical attenuators each used for attenuating an input optical signal included in a wavelength division multiplexing signal as a component having a specific wavelength by applying a variable attenuation quantity, a plurality of control units each used for executing automatic control for automatically controlling the attenuation quantity in order to adjust the optical level of an optical signal output by a corresponding one of the variable optical attenuators to a target level in an ordinary normal state of the input optical signal, and a detection unit for detecting a loss of light failure of an optical signal input to each of the variable optical attenuators and detecting disappearance of the loss of light failure. When the detection unit detects the loss of light failure, a corresponding one of the control units executes first attenuation quantity locking control to adjust the attenuation quantity to a first predetermined value and as the detection unit detects the disappearance of the loss of light, the corresponding control unit executes second attenuation quantity locking control to adjust the attenuation quantity to a second predetermined value.

摘要翻译： 光学级控制装置包括多个可变光衰减器，每个可变光衰减器用于通过施加可变衰减量来衰减包括在波分复用信号中的输入光信号作为具有特定波长的分量;多个控制单元，每个用于 执行用于自动控制衰减量的自动控制，以便在输入光信号的普通正常状态下将由相应的一个可变光衰减器输出的光信号的光学电平调整到目标电平;以及检测单元， 检测输入到每个可变光衰减器的光信号的光衰的损失，并检测光故障损失的消失。 当检测单元检测到光损失时，相应的一个控制单元执行第一衰减量锁定控制，以将衰减量调节到第一预定值，并且当检测单元检测到光损失消失时，对应的 控制单元执行第二衰减量锁定控制以将衰减量调整到第二预定值。