专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08077383B2 Optical amplifier 有权
标题翻译：光放大器
公开(公告)号：US08077383B2
公开(公告)日：2011-12-13
申请号：US12053816
申请日：2008-03-24
申请人： Tomoaki Takeyama , Keiko Sasaki , Shinichirou Muro
发明人： Tomoaki Takeyama , Keiko Sasaki , Shinichirou Muro
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H01S3/10015 , H01S3/1305 , H01S3/1608 , H01S2301/02 , H01S2301/04
摘要： An optical amplifier including: a first amplifying unit amplifying an input light by utilizing a first excitation light and thereby outputting a first amplified light; a second amplifying unit amplifying the first amplified light by utilizing a second excitation light and thereby outputting a second amplified light; and a control unit detecting a first absorption rate of the first excitation light and a second absorption rate of the second excitation light, and controlling a level of the first excitation light and a level of second excitation light based on the first absorption rate and the second absorption rate. The first absorption rate corresponds to a ratio of the first excitation light absorbed in the first amplifying unit, and the second absorption rate corresponds to a ratio of the second excitation light absorbed in the second amplifying unit.
摘要翻译：一种光放大器，包括：第一放大单元，利用第一激发光放大输入光，从而输出第一放大光; 第二放大单元，利用第二激发光放大第一放大光，从而输出第二放大光; 以及控制单元，其检测所述第一激发光的第一吸收率和所述第二激发光的第二吸收率，并且基于所述第一吸收率控制所述第一激发光的电平和第二激发光的电平，吸收率。第一吸收率对应于第一放大单元吸收的第一激发光的比例，第二吸收率对应于第二放大单元吸收的第二激发光的比例。

2. 发明授权

US08027082B2 Raman amplifier and excitation light source used thereof 有权
标题翻译：拉曼放大器及其使用的激发光源
公开(公告)号：US08027082B2
公开(公告)日：2011-09-27
申请号：US11964375
申请日：2007-12-26
申请人： Shinichirou Muro , Tomoaki Takeyama
发明人： Shinichirou Muro , Tomoaki Takeyama
IPC分类号： H01S3/30 , H04B10/17 , H04B10/12
CPC分类号： H01S3/06754 , H01S3/09408 , H01S3/09415 , H01S3/10023 , H01S3/1301 , H01S3/1305 , H01S3/1608 , H01S3/302
摘要： A Raman amplifier provided with a pump source outputting a pumping light; a rare-earth doped fiber inputting the pumping light and outputting an excitation light; and a guiding unit guiding the excitation light to an optical fiber to a direction opposite to which a signal light propagates in the optical fiber.Also a Raman amplifier provided with a plurality of pump sources outputting a plurality of pumping lights; a plurality of rare-earth doped fibers inputting the each of the plurality of pumping lights and outputting a plurality of excitation lights; a guiding unit guiding the plurality of excitation lights to an optical fiber to a direction opposite to which a signal light propagates in the optical fiber.
摘要翻译：拉曼放大器配有泵浦源，输出泵浦光; 输入激励光并输出激发光的稀土掺杂光纤; 以及引导单元，其将激发光引导到光纤到与光纤中信号光传播的相反方向。还有一种拉曼放大器，其具有输出多个泵浦光的多个泵浦光源; 多个稀土掺杂光纤，其输入所述多个泵浦光中的每一个并输出多个激发光; 导向单元，其将多个激发光引导到光纤到与光纤中信号光传播的相反方向。

3. 发明授权

US08026538B2 Photo-detecting apparatus and photo-detecting method 有权
标题翻译：光电检测装置和光电检测方法
公开(公告)号：US08026538B2
公开(公告)日：2011-09-27
申请号：US12285232
申请日：2008-09-30
申请人： Tomoaki Takeyama , Keiko Sasaki , Shinichirou Muro
发明人： Tomoaki Takeyama , Keiko Sasaki , Shinichirou Muro
IPC分类号： H01S3/04
CPC分类号： H01L31/102
摘要： A photo-detecting apparatus includes a photodiode that coverts light into electricity, a reverse-voltage switching unit that switches a reverse voltage to be applied to the photodiode, a current-difference detecting unit that detects a change in an output current of the photodiode occurring due to switching of the reverse voltage as a current difference, a correspondence retaining unit that retains a correspondence between the current difference and a dark current, a dark-current calculating unit that calculates a dark current by referring to the correspondence based on the current difference detected by the current-difference detecting unit, and a dark-current correcting unit that corrects the output current of the photodiode based on the dark current to find a photocurrent obtained through photoelectric conversion.
摘要翻译：一种光电检测装置，包括：将光转换成电的光电二极管;反相电压切换单元，其切换施加到光电二极管的反向电压;电流差检测单元，检测发生的光电二极管的输出电流的变化; 由于反向电压作为电流差的切换，保持电流差和暗电流之间的对应关系的对应关系保持单元，参照基于电流差的对应关系计算暗电流的暗电流计算单元由电流差检测单元检测，以及暗电流校正单元，其基于暗电流校正光电二极管的输出电流，以找到通过光电转换获得的光电流。

4. 发明申请

US20090297143A1 Optical transmission apparatus and optical attenuation amount control method 有权
标题翻译：光传输装置及光衰减量控制方法
公开(公告)号：US20090297143A1
公开(公告)日：2009-12-03
申请号：US12453060
申请日：2009-04-28
申请人： Tomoaki Takeyama , Ichiro Nakajima , Keiko Sasaki , Shinichirou Muro , Etsuko Hayashi
发明人： Tomoaki Takeyama , Ichiro Nakajima , Keiko Sasaki , Shinichirou Muro , Etsuko Hayashi
IPC分类号： H04B10/08 , H04B10/04
CPC分类号： H04B10/07955 , H04J14/0221
摘要： In an optical transmission apparatus, levels of signal lights obtained by demultiplexing a WDM signal and corresponding to channels are detected, based on which a channel in which a signal is transmitted and a channel in which no signal is transmitted are determined. An attenuation amount of a channel in which no signal is transmitted in a predetermined range from the channel in which the signal is transmitted is set to a value equal to an attenuation amount of the channel in which the signal is transmitted. An attenuation amount of a channel in which no signal is transmitted out of the predetermined range from the channel in which the signal is transmitted is set to a value larger than the attenuation amount of the channel in which the signal is transmitted. The signal lights are attenuated based on the values and multiplexed.
摘要翻译：在光传输装置中，检测通过对WDM信号进行解复用和对应于信道而获得的信号光的电平，基于该信号的信号被发送的信道和没有发送信号的信道被确定。在发送信号的信道的预定范围内不发送信号的信道的衰减量被设定为等于发送信号的信道的衰减量的值。没有信号从发送信号的信道发送出预定范围的信道的衰减量被设置为大于发送信号的信道的衰减量的值。信号灯根据值进行衰减并进行复用。

5. 发明授权

US07551347B2 Optical amplification characteristics simulation apparatus and optical amplification characteristics simulation method 失效
标题翻译：光放大特性仿真装置及光放大特性仿真方法
公开(公告)号：US07551347B2
公开(公告)日：2009-06-23
申请号：US11979370
申请日：2007-11-01
申请人： Etsuko Hayashi , Shunsuke Ono , Setsuhisa Tanabe , Shinichirou Muro , Masato Nishihara
发明人： Etsuko Hayashi , Shunsuke Ono , Setsuhisa Tanabe , Shinichirou Muro , Masato Nishihara
IPC分类号： H04B10/17
CPC分类号： H01S3/06754 , H01S3/0007 , H01S3/0064 , H01S3/06758 , H01S3/0677 , H01S3/09415 , H01S3/1608 , H01S2301/04
摘要： In an optical amplification characteristics simulation apparatus according to the present invention, using spectrums of a signal light input to an optical amplifier and a characteristic parameter for amplification medium, gain wavelength characteristics of the amplification medium are calculated. A calculating formula for the above has a parameter corresponding to a gain fluctuation portion due to a gain spectral hole burning (GSHB) phenomenon, and this parameter is defined by a function obtained by modeling a physical phenomenon in which a population inversion rate is reduced due to the GSHB, based on that electron occupation numbers in each Stark level on the end level side are increased. Then, based on the calculated gain wavelength characteristics, the output power of the signal light is obtained, to thereby perform the optical amplification characteristics simulation on the optical amplifier. As a result, it is possible to construct a high versatile calculation model based on the physical phenomenon for the gain fluctuation due to the GSHB, to thereby simulate with high precision the optical amplification characteristics of the optical amplifier under arbitrary conditions.
摘要翻译：在根据本发明的光放大特性模拟装置中，使用输入到光放大器的信号光的光谱和放大介质的特性参数，计算放大介质的增益波长特性。上述计算公式由于增益谱孔燃烧（GSHB）现象而具有与增益变动部分相对应的参数，该参数由通过模拟体积反转率减少的物理现象获得的函数来定义根据GSHB的最终级别的每个Stark级别的电子占有数量增加。然后，基于计算出的增益波长特性，获得信号光的输出功率，从而对光放大器进行光放大特性仿真。结果，可以基于由于GSHB引起的增益波动的物理现象构建高通用性计算模型，从而以任意条件高精度模拟光放大器的光放大特性。

6. 发明申请

US20080239470A1 INDIVIDUAL BAND GAIN EQUALIZER FOR OPTICAL AMPLIFIERS 有权
标题翻译：用于光放大器的个体带增益平衡器
公开(公告)号：US20080239470A1
公开(公告)日：2008-10-02
申请号：US12016176
申请日：2008-01-17
申请人： Masato Nishihara , Miki Onaka , Etsuko Hayashi , Shinichirou Muro
发明人： Masato Nishihara , Miki Onaka , Etsuko Hayashi , Shinichirou Muro
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06754 , H01S3/10015 , H01S3/10069 , H01S3/1301 , H01S3/302
摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.
摘要翻译：一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益。这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离传输系统包括光学分插单元。

7. 发明申请

US20080158657A1 RAMAN AMPLIFIER AND EXCITATION LIGHT SOURCE USED THEREOF 有权
标题翻译：拉曼放大器和激活光源
公开(公告)号：US20080158657A1
公开(公告)日：2008-07-03
申请号：US11964375
申请日：2007-12-26
申请人： Shinichirou Muro , Tomoaki Takeyama
发明人： Shinichirou Muro , Tomoaki Takeyama
IPC分类号： H01S3/30 , H01S3/09
CPC分类号： H01S3/06754 , H01S3/09408 , H01S3/09415 , H01S3/10023 , H01S3/1301 , H01S3/1305 , H01S3/1608 , H01S3/302
摘要： A Raman amplifier provided with a pump source outputting a pumping light; a rare-earth doped fiber inputting the pumping light and outputting an excitation light; and a guiding unit guiding the excitation light to an optical fiber to a direction opposite to which a signal light propagates in the optical fiber.Also a Raman amplifier provided with a plurality of pump sources outputting a plurality of pumping lights, a plurality of rare-earth doped fibers inputting the each of the plurality of pumping lights and outputting a plurality of excitation lights; a guiding unit guiding the plurality of excitation lights to an optical fiber to a direction opposite to which a signal light propagates in the optical fiber.
摘要翻译：拉曼放大器配有泵浦源，输出泵浦光; 输入激励光并输出激发光的稀土掺杂光纤; 以及引导单元，其将激发光引导到光纤到与光纤中信号光传播的相反方向。还有一种拉曼放大器，其具有输出多个泵浦光的多个泵浦源，输入多个泵浦光中的每一个并输出多个激发光的多个稀土掺杂光纤; 导向单元，其将多个激发光引导到光纤到与光纤中信号光传播的相反方向。

8. 发明授权

US07359112B2 Individual band gain equalizer for optical amplifiers 有权
标题翻译：用于光放大器的单独带宽增益均衡器
公开(公告)号：US07359112B2
公开(公告)日：2008-04-15
申请号：US11362727
申请日：2006-02-28
申请人： Masato Nishihara , Miki Onaka , Etsuko Hayashi , Shinichirou Muro
发明人： Masato Nishihara , Miki Onaka , Etsuko Hayashi , Shinichirou Muro
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06754 , H01S3/10015 , H01S3/10069 , H01S3/1301 , H01S3/302
摘要： A control apparatus comprises a light monitoring unit for dividing a signal wavelength band into at least a band in which output light power of an optical amplifier tends to decrease at an decrease in the number of signal wavelengths and a band including a gain deviation band, and for monitoring inputted light power for the individual divided bands, a calculation unit for obtaining the number of signal wavelengths in the individual divided bands based on a monitor result, and a target gain correction unit for correcting a target gain based on a result of the calculation. This suppresses a transient variation of signal light level due to SHB or SRS at a high speed with a simple configuration without deteriorating noise characteristic, thus enabling optical amplifiers to be further disposed in a multi-stage fashion, which can lengthen the transmission distance of a transmission system including an optical add/drop unit.
摘要翻译：一种控制装置，包括：光监视单元，用于将信号波长带分割成至少一个频带，其中信号波长数目的减少和包括增益偏差带的波段的光放大器的输出光功率趋于减小;以及用于监视各个分割频带的输入光功率;计算单元，用于基于监视结果获得各个分割频带中的信号波长数;以及目标增益校正单元，用于基于计算结果来校正目标增益。这样可以通过简单的结构，以高速度抑制由于SHB或SRS引起的信号光电平的瞬态变化，而不会使噪声特性恶化，从而能够以多级方式进一步布置光放大器，这可以延长传输距离传输系统包括光学分插单元。

9. 发明申请

US20070229941A1 Optical amplifier 失效
标题翻译：光放大器
公开(公告)号：US20070229941A1
公开(公告)日：2007-10-04
申请号：US11598098
申请日：2006-11-13
申请人： Tomoaki Takeyama , Keiko Sasaki , Shinichirou Muro
发明人： Tomoaki Takeyama , Keiko Sasaki , Shinichirou Muro
IPC分类号： H01S3/00 , H04B10/12
CPC分类号： H04B10/2935 , H01S3/06758 , H01S3/10015
摘要： An optical amplifier of the present invention comprises: first and second optical amplifying sections connected in series to each other between an input port and an output port; a first variable optical attenuator arranged on a former stage of the first optical amplifying section; a second variable optical attenuator arranged between the first and second optical amplifying sections; an optical amplification control section that controls the first and second optical amplifying sections; and an optical attenuation control section that controls the first and second variable optical attenuators. The optical amplification control section controls each of the optical amplifying sections so that a gain of the entirety of the optical amplifier is held constant, and the optical attenuation control section controls attenuation amounts of the variable optical attenuators so that monitor values of the output powers from the variable optical attenuators approximate the same value, provided that a value of the sum of the attenuation amounts of the variable optical attenuators decided according to the signal light input power per one wavelength of a WDM light is held constant. As a result, it becomes possible to provide at a low cost the optical amplifier capable of achieving flat output wavelength characteristics and the favorable NF, irrespective of the signal light input power per one wavelength of the WDM light and the number of wavelengths thereof.
摘要翻译：本发明的光放大器包括：在输入端口和输出端口之间彼此串联连接的第一和第二光放大部分; 布置在第一光放大部分的前级上的第一可变光衰减器; 布置在第一和第二光放大部分之间的第二可变光衰减器; 控制所述第一和第二光学放大部分的光放大控制部分; 以及光衰减控制部分，其控制第一和第二可变光衰减器。光放大控制部分控制每个光放大部分，使得整个光放大器的增益保持恒定，并且光衰减控制部分控制可变光衰减器的衰减量，使得输出功率的监视值从可变光衰减器近似相同的值，条件是根据WDM光的每一个波长的信号光输入功率确定的可变光衰减器的衰减量之和的值保持恒定。结果，可以以低成本提供能够实现平坦的输出波长特性和良好的NF的光放大器，而与WDM光的每个波长的信号光输入功率和波长数无关。

10. 发明授权

US08116626B2 Optical transmission apparatus and optical attenuation amount control method 有权
标题翻译：光传输装置及光衰减量控制方法
公开(公告)号：US08116626B2
公开(公告)日：2012-02-14
申请号：US12453060
申请日：2009-04-28
申请人： Tomoaki Takeyama , Ichiro Nakajima , Keiko Sasaki , Shinichirou Muro , Etsuko Hayashi
发明人： Tomoaki Takeyama , Ichiro Nakajima , Keiko Sasaki , Shinichirou Muro , Etsuko Hayashi
IPC分类号： H04B10/08 , H04B10/04
CPC分类号： H04B10/07955 , H04J14/0221
摘要： In an optical transmission apparatus, levels of signal lights obtained by demultiplexing a WDM signal and corresponding to channels are detected, based on which a channel in which a signal is transmitted and a channel in which no signal is transmitted are determined. An attenuation amount of a channel in which no signal is transmitted in a predetermined range from the channel in which the signal is transmitted is set to a value equal to an attenuation amount of the channel in which the signal is transmitted. An attenuation amount of a channel in which no signal is transmitted out of the predetermined range from the channel in which the signal is transmitted is set to a value larger than the attenuation amount of the channel in which the signal is transmitted. The signal lights are attenuated based on the values and multiplexed.
摘要翻译：在光传输装置中，检测通过对WDM信号进行解复用和对应于信道而获得的信号光的电平，基于该信号的信号被发送的信道和没有发送信号的信道被确定。在发送信号的信道的预定范围内不发送信号的信道的衰减量被设定为等于发送信号的信道的衰减量的值。没有信号从发送信号的信道发送出预定范围的信道的衰减量被设置为大于发送信号的信道的衰减量的值。信号灯根据值进行衰减并进行复用。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式