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1. 发明授权

US6014248A Wavelength division multiplexed optical signal amplifier 失效
标题翻译：波分复用光信号放大器
公开(公告)号：US6014248A
公开(公告)日：2000-01-11
申请号：US49090
申请日：1998-03-27
申请人： Taiki Kobayashi , Tadashi Okiyama , Shinya Inagaki
发明人： Taiki Kobayashi , Tadashi Okiyama , Shinya Inagaki
IPC分类号： H01S3/10 , H01S3/06 , H01S3/067 , H04B10/07 , H04B10/296 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/296 , H04J14/0221
摘要： A wavelength division multiplexed (WDM) optical signal amplifier which amplifies optical signals having different wavelengths with minimized deviations in their respective output power levels, while maintaining the total optical output at a constant power level. An optical splitter, disposed at the output of the amplifier, splits off a fraction of the amplified WDM optical output signal for feedback purposes. This WDM optical feedback signal is subjected to a wavelength division demultiplexer, where the optical components contained in the signal are demultiplexed into separate optical feedback signals each having a different wavelength. A plurality of optical power level detectors detect the optical power levels of the individual optical feedback signals. Based on the detected optical power levels, a controller adjusts the individual output power levels of the plurality of electrical-to-optical converters, so that the optical power levels detected by the optical power level detectors will coincide with each other.
摘要翻译：一种波分复用（WDM）光信号放大器，其将具有不同波长的光信号以其各自的输出功率电平的最小偏差放大，同时将总的光输出保持在恒定的功率电平。设置在放大器的输出端的光分路器分离放大的WDM光输出信号的一部分用于反馈目的。该WDM光反馈信号经受波分解复用器，其中包含在信号中的光学分量被解复用为分别具有不同波长的光反馈信号。多个光功率电平检测器检测各个光反馈信号的光功率电平。基于检测到的光功率电平，控制器调整多个电 - 光转换器的各个输出功率电平，使得由光功率电平检测器检测的光功率电平彼此一致。

2. 发明授权

US6111688A Optical amplifier and system including the same 失效
标题翻译：光放大器和系统包括相同
公开(公告)号：US6111688A
公开(公告)日：2000-08-29
申请号：US198566
申请日：1998-11-23
申请人： Taiki Kobayashi , Yoshihito Onoda , Tadashi Okiyama
发明人： Taiki Kobayashi , Yoshihito Onoda , Tadashi Okiyama
IPC分类号： H01S3/10 , H01S3/06 , H01S3/094 , H01S3/13 , H01S3/131 , H01S3/00
CPC分类号： H01S3/094003 , H01S3/1301 , H01S2301/04 , H01S3/09408 , H01S3/10015 , H01S3/1003
摘要： Disclosed herein is an optical amplifier including an optical amplifying medium, a pumping source, an optical filter, and a control unit. Signal light is supplied to the optical amplifying medium. The pumping source supplies pump light to the optical amplifying medium so that the optical amplifying medium provides a gain band including the wavelength of the signal light. The optical filter is optically connected between the optical amplifying medium and the pumping source, and has wavelength selectivity depending upon temperature. The control unit controls the temperature of the optical filter according to a control signal given to the control unit. The wavelength characteristic of gain in the gain band provided by the optical amplifying medium changes according to the power of the signal light and the power and center wavelength of the pump light. When the temperature of the optical filter changes, the wavelength selectivity of the optical filter changes, so that the center wavelength of the pump light changes. Accordingly, the gain tilt of the optical amplifier can be adjusted.
摘要翻译：本文公开了一种包括光放大介质，泵浦源，滤光器和控制单元的光放大器。信号光被提供给光放大介质。泵浦源将光源提供给光放大介质，使得光放大介质提供包括信号光波长的增益带。光学滤波器光学连接在光学放大介质和泵浦源之间，并且具有取决于温度的波长选择性。控制单元根据给予控制单元的控制信号来控制滤光器的温度。由光放大介质提供的增益带的增益的波长特性根据信号光的功率和泵浦光的功率和中心波长而变化。当光滤波器的温度变化时，滤光器的波长选择性发生变化，使得泵浦光的中心波长发生变化。因此，可以调整光放大器的增益倾斜。

3. 发明授权

US06496300B2 Optical amplifier 失效
标题翻译：光放大器
公开(公告)号：US06496300B2
公开(公告)日：2002-12-17
申请号：US09093410
申请日：1998-06-09
申请人： Susumu Kinoshita , Miki Onaka , Yasushi Sugaya , Chihiro Ohshima , Terumi Chikama , Hiroyuki Itou , Tadashi Okiyama , Taiki Kobayashi
发明人： Susumu Kinoshita , Miki Onaka , Yasushi Sugaya , Chihiro Ohshima , Terumi Chikama , Hiroyuki Itou , Tadashi Okiyama , Taiki Kobayashi
IPC分类号： H04B1017
CPC分类号： H04B10/2941 , H01S3/06758 , H04B2210/003 , H04J14/0221
摘要： An optical amplifier of a wavelength-division multiplexing transmission system that includes a pre-stage optical amplifying unit and a post stage optical amplifying unit. The pre-stage optical amplifying unit has a rare-earth element doped optical fiber and a pump light source for inputting a pump light to the rare-earth element doped optical fiber. The post-stage optical amplifying unit has a second rare-earth element doped optical fiber and a pump light source for inputting a pump light to the second rare-earth element doped optical fiber. The pre-stage optical amplifying unit and the post-stage optical amplifying unit are optically connected by a detachable optical coupling device. In addition, a gain equalizing unit, positioned on an output side of the optical fibers, compensates for wavelength-dependency of a gain characteristic of the optical fibers.
摘要翻译：一种包括前级光放大单元和后级光放大单元的波分复用传输系统的光放大器。前级光放大单元具有稀土元素掺杂光纤和用于将泵浦光输入到稀土元素掺杂光纤的泵浦光源。后级光放大单元具有第二稀土元素掺杂光纤和用于将泵浦光输入到第二稀土元素掺杂光纤的泵浦光源。前级光放大单元和后级光放大单元通过可拆卸光耦合装置光学连接。此外，位于光纤的输出侧的增益均衡单元补偿光纤的增益特性的波长依赖性。

4. 发明授权

US07924499B2 Gain and signal level adjustments of cascaded optical amplifiers 有权
公开(公告)号：US07924499B2
公开(公告)日：2011-04-12
申请号：US12822797
申请日：2010-06-24
申请人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

5. 发明授权

US08547629B2 Gain and signal level adjustments of cascaded optical amplifiers 有权
公开(公告)号：US08547629B2
公开(公告)日：2013-10-01
申请号：US13042737
申请日：2011-03-08
申请人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H01S3/10 , H01S3/23
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

6. 发明授权

US07969648B2 Gain and signal level adjustments of cascaded optical amplifiers 有权
标题翻译：级联光放大器的增益和信号电平调整
公开(公告)号：US07969648B2
公开(公告)日：2011-06-28
申请号：US11406281
申请日：2006-04-19
申请人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.
摘要翻译：一种包括第一和第二光放大器的光放大装置和控制器。第一光放大器接收光并放大所接收的光。第二光放大器接收由第一光放大器放大的光，并放大所接收的光。当由第一光学放大器接收的光的电平改变＆Dgr时，控制器控制由第二光放大器接收的光的水平变化大约为＆Dgr。在各种实施例中，控制器使得第一和第二光学放大器的增益之和恒定。在其他实施例中，光放大装置包括第一和第二光放大器和增益调节器。增益调节器检测第一光放大器的增益偏离目标增益，并调整第二光放大器的增益以补偿检测到的偏差。

7. 发明申请

US20110164309A1 GAIN AND SIGNAL LEVEL ADJUSTMENTS OF CASCADED OPTICAL AMPLIFIERS 有权
标题翻译：光电放大器的增益和信号电平调整
公开(公告)号：US20110164309A1
公开(公告)日：2011-07-07
申请号：US13042737
申请日：2011-03-08
申请人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H01S3/02
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.
摘要翻译：一种包括第一和第二光放大器的光放大装置和控制器。第一光放大器接收光并放大所接收的光。第二光放大器接收由第一光放大器放大的光，并放大所接收的光。当由第一光学放大器接收的光的电平改变＆Dgr时，控制器控制由第二光放大器接收的光的水平变化大约为＆Dgr。在各种实施例中，控制器使得第一和第二光学放大器的增益之和恒定。在其他实施例中，光放大装置包括第一和第二光放大器和增益调节器。增益调节器检测第一光放大器的增益偏离目标增益，并调整第二光放大器的增益以补偿检测到的偏差。

8. 发明申请

US20100272445A1 GAIN AND SIGNAL LEVEL ADJUSTMENTS OF CASCADED OPTICAL AMPLIFIERS 有权
标题翻译：光电放大器的增益和信号电平调整
公开(公告)号：US20100272445A1
公开(公告)日：2010-10-28
申请号：US12822797
申请日：2010-06-24
申请人： Shinya INAGAKI , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya INAGAKI , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H04B10/00
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.
摘要翻译：一种包括第一和第二光放大器的光放大装置和控制器。第一光放大器接收光并放大所接收的光。第二光放大器接收由第一光放大器放大的光，并放大所接收的光。当由第一光学放大器接收的光的电平改变＆Dgr时，控制器控制由第二光放大器接收的光的水平变化大约为＆Dgr。在各种实施例中，控制器使得第一和第二光学放大器的增益之和恒定。在其他实施例中，光放大装置包括第一和第二光放大器和增益调节器。增益调节器检测第一光放大器的增益偏离目标增益，并调整第二光放大器的增益以补偿检测到的偏差。

9. 发明授权

US07061666B2 Gain and signal level adjustments of cascaded optical amplifiers 有权
公开(公告)号：US07061666B2
公开(公告)日：2006-06-13
申请号：US10414237
申请日：2003-04-16
申请人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

10. 发明申请

US20060198017A1 Gain and signal level adjustments of cascaded optical amplifiers 有权
公开(公告)号：US20060198017A1
公开(公告)日：2006-09-07
申请号：US11406281
申请日：2006-04-19
申请人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
发明人： Shinya Inagaki , Norifumi Shukunami , Susumu Kinoshita , Hiroyuki Itou , Taiki Kobayashi
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S3/1305 , H04B10/2912 , H04B10/2941 , H04B2210/003
摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

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