公开(公告)号：US5768011A

公开(公告)日：1998-06-16

申请号：US587396

申请日：1996-01-17

申请人： Kazuya Amaki ,  Takeo Osaka

发明人： Kazuya Amaki ,  Takeo Osaka

IPC分类号： H01S3/13 ,  H04B10/07 ,  H04B10/077 ,  H04B10/079 ,  H04B10/293 ,  H04B10/516 ,  H04B10/54 ,  H04B10/564 ,  H04B10/61 ,  H04B10/16 ,  H04B2/00

CPC分类号： H04B10/2931 ,  H01S3/1301 ,  H04B10/0777 ,  H04B10/2912

摘要： An optical amplifying repeater is provided whereby a transfer signal generated in response to a monitor signal from an end office is generated and amplified by a rare earth element doped fiber, the modulation degree with respect to the optical output of the fiber being held constant, regardless of the frequency of the this transfer signal. This optical amplifying repeater has a rare earth element (such as erbium) doped fiber, an automatic adjusting loop 12, and a monitor and response unit, and is further provided with a modulation degree compensation part for the purpose of holding constant the transfer signal modulation degree with respect to the optical output of the fiber, regardless of the frequency of the transfer signal.

摘要翻译： 提供一种光放大中继器，由此响应于来自终端的监视信号产生的传送信号由稀土元素掺杂光纤产生和放大，相对于光纤的光输出的调制度保持不变，不管 的传输信号的频率。 该光放大中继器具有稀土元素（例如掺铒）掺杂光纤，自动调节回路12以及监视和响应单元，并且还具有调制度补偿部分，以保持传输信号调制的恒定 相对于光纤的光输出而言，与传送信号的频率无关。

公开(公告)号：US5864422A

公开(公告)日：1999-01-26

申请号：US615620

申请日：1996-03-13

申请人： Satoru Miyazaki ,  Kazuya Amaki

发明人： Satoru Miyazaki ,  Kazuya Amaki

IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/13 ,  H01S3/131 ,  H04B10/07 ,  H04B10/079 ,  H04B10/2507 ,  H04B10/29 ,  H04B10/293 ,  H01S3/00 ,  G02F1/39

CPC分类号： H01S3/1301 ,  H01S2301/06 ,  H01S3/06754 ,  H01S3/10015

摘要： In a light amplifier device having a rare-earth element doped optical fiber to which an input light signal and an exciting light are applied, an exciting-light emitting part generates the exciting light. A variable attenuator which attenuates the exciting light applied. A driving part which supplies a driving current to the exciting light part. A monitor part monitors the input light signal. A light-emitting part generates a light in a wavelength band which includes a wavelength of the input light signal. A control part for controlling either the attenuator or driving part, when the monitor part detects a change in the input light signal, so that the light generated by the light-emitting part is applied to the rare-earth element doped optical fiber.

摘要翻译： 在具有施加输入光信号和激励光的稀土元素掺杂光纤的光放大器装置中，激发光发射部产生激发光。 一种可变衰减器，可衰减施加的激发光。 驱动部，其向激励光部供给驱动电流。 监视器部分监视输入光信号。 发光部分产生包括输入光信号的波长的波长带中的光。 当监视器部分检测到输入光信号的变化时，用于控制衰减器或驱动部分的控制部分，使得由发光部分产生的光被施加到掺杂稀土元素的光纤。

公开(公告)号：US5296957A

公开(公告)日：1994-03-22

申请号：US759483

申请日：1991-09-13

申请人： Masaaki Takahashi ,  Takanori Maki ,  Kazuya Amaki ,  Katsumi Kikawa ,  Mitsushi Nitta

发明人： Masaaki Takahashi ,  Takanori Maki ,  Kazuya Amaki ,  Katsumi Kikawa ,  Mitsushi Nitta

IPC分类号： H04B10/00 ,  H04B10/02 ,  H04B10/035 ,  H04B10/077 ,  H04B10/08 ,  H04B10/17 ,  H04B10/291 ,  H04B10/293

CPC分类号： H04B10/2918 ,  H04B10/035 ,  H04B10/0777 ,  H04B10/2939 ,  H04B2210/074

摘要： An optical repeater having a loop-back function is provided in a transmission system including first and second transmission lines. The optical repeater includes a first optical amplifier connected to the first transmission line, a second optical amplifier connected to the second transmission line, a loop-back unit connected to both transmission lines, and a control unit. The control unit controls the loop-back unit to form a loop-back line when a loop-back instruction is detected. Therefore, optical signals are directly amplified without being converted into electrical signals, and a loop-back signal (return signal) and optical signals are not mixed in the optical repeater so that a loop-back operation can be correctly carried out in an optical repeater having a small size and low power consumption.

摘要翻译： 在包括第一和第二传输线的传输系统中提供具有环回功能的光中继器。 光中继器包括连接到第一传输线的第一光放大器，连接到第二传输线的第二光放大器，连接到两传输线的环回单元和控制单元。 当检测到环回指令时，控制单元控制环回单元形成回送线。 因此，光信号被直接放大而不被转换为电信号，并且环路信号（返回信号）和光信号不会混入光中继器中，从而可以在光中继器中正确执行环回操作 具有小尺寸和低功耗。