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1. 发明公开

EP3379662A1 OPTICAL AMPLIFIER 审中-公开
公开(公告)号：EP3379662A1
公开(公告)日：2018-09-26
申请号：EP15908762.6
申请日：2015-11-19
申请人： Mitsubishi Electric Corporation
发明人： MIURA, Hiroshi , TOKURA, Toshiyuki
IPC分类号： H01S3/10 , H01S3/067 , H01S3/0941
CPC分类号： H01S3/1305 , H01S3/0078 , H01S3/06754 , H01S3/06758 , H01S3/094003 , H01S3/094011 , H01S3/0941 , H01S3/09415 , H01S3/10015 , H01S3/1003 , H01S3/10069 , H01S3/1301 , H01S3/1312 , H01S3/1608 , H01S2301/04 , H04B10/0777 , H04B10/2931 , H04B10/296
摘要： An optical amplifier is provided which can suppress, without measuring signal beam power at individual wavelengths, wavelength-dependence of gain with respect to a signal beam into which multiple signal beams having respective wavelengths different from each other are multiplexed. The optical amplifier (100) according to the present invention can suppress wavelength-dependence of gain by giving loss in accordance with a linear-loss slope to an amplified signal beam. The optical amplifier (100) is provided with a variable tilt equalizer (11) for varying a loss slope value representing the slope of the loss slope and a tilt control unit (22) for controlling a loss slope value of the variable tilt equalizer (11).

2. 发明公开

EP3342011A2 SELF-SEEDING HIGH POWER LASER 无效
公开(公告)号：EP3342011A2
公开(公告)日：2018-07-04
申请号：EP16831541.4
申请日：2016-06-21
申请人： Raytheon Company
发明人： FILGAS, David, M.
IPC分类号： H01S3/083 , H01S3/07 , H01S3/10 , H01S3/13 , H01S3/067 , H01S3/063 , H01S3/08 , H01S3/106 , H01S3/136 , H01S3/105
CPC分类号： H01S3/10023 , H01S3/0632 , H01S3/06791 , H01S3/07 , H01S3/08013 , H01S3/0805 , H01S3/08072 , H01S3/083 , H01S3/1003 , H01S3/10053 , H01S3/10084 , H01S3/10092 , H01S3/105 , H01S3/1053 , H01S3/1065 , H01S3/1307 , H01S3/136
摘要： A self-seeding high power laser includes a spatial filter; an optical relay for circulating a low power un-distorted optical beam, an adaptive optic optically coupled to the output of the optical relay; a high power amplifier optically coupled to an output of the adaptive optic phase control element, wherein adaptively modified phasefront injected by the adaptive optic cancels distortions produced by the high power amplifier; a beamsplitter optically coupled to the high power amplifier for splitting the high power un-distorted optical beam into a high power output beam as the output of the self-seeding high power laser, and a low power beam; a focusing lens; a detector for detecting a metric of the low power beam; and a controller for adaptively controlling the adaptive optic to maximize the power of the high power amplifier, based on the detected metric.

3. 发明授权

EP2575220B1 Tunable laser with integrated wavelength reference 有权转让
标题翻译：集成波长参考的可调谐激光器
公开(公告)号：EP2575220B1
公开(公告)日：2017-08-16
申请号：EP12006832.5
申请日：2012-10-01
申请人： Aurrion, Inc.
发明人： Fang, Alexander W. , Fish, Gregory A. , Hutchinson, John
IPC分类号： H01S5/06 , H01S5/026
CPC分类号： H01S5/068 , H01S3/0014 , H01S3/0637 , H01S3/0675 , H01S3/10015 , H01S3/10023 , H01S3/1003 , H01S3/1055 , H01S3/1305 , H01S5/021 , H01S5/02453 , H01S5/026 , H01S5/0265 , H01S5/0612 , H01S5/1028 , H01S5/1209 , H01S5/142

4. 发明授权

EP2296303B1 Device for controlling the power of a WDM signal whose number of channels varies 失效
标题翻译：设备而变化的信道数用于控制WDM信号的强度
公开(公告)号：EP2296303B1
公开(公告)日：2013-11-20
申请号：EP10185439.6
申请日：1997-04-30
申请人： FUJITSU LIMITED
发明人： Sugaya, Yasushi , Kinoshita, Susumu
IPC分类号： H04J14/02 , H04B10/291 , H04B10/294 , H01S3/07
CPC分类号： H01S3/06758 , H01S3/10015 , H01S3/1003 , H01S3/1301 , H01S2301/04 , H04B10/291 , H04B10/2912 , H04B10/2931 , H04B10/2942 , H04B10/296 , H04B2210/003 , H04J14/0221
摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.

5. 发明授权

EP1018195B1 OPTICAL AMPLIFIER WITH ACTIVELY CONTROLLED SPECTRAL GAIN 有权
标题翻译：与主动控制光谱增益光放大器
公开(公告)号：EP1018195B1
公开(公告)日：2008-10-08
申请号：EP98941880.1
申请日：1998-08-19
申请人： NOVERA OPTICS, INC.
发明人： KIM, Byoung Yoon , YUN, Seok Hyun , KIM, Hyo Sang, Department of Physics
IPC分类号： H01S3/07 , H01S3/10 , G02F1/39 , H04B10/12 , H01S3/30 , H01S3/23
CPC分类号： H01S3/06795 , H01S3/06758 , H01S3/10015 , H01S3/1003 , H01S3/1301 , H01S3/302 , H01S2301/04 , H04B10/2941 , H04B10/296 , H04B2210/003
摘要： This invention relates to an optical amplifier capable of adjusting the gain curve to a desired shape. This invention also relates to a fiber light source capable of producing desired output spectrum. The method to use passive wavelength filters for the gain flattening of erbium doped fiber optical amplifier is well known. However, the disadvantage with this method is that the gain curve varies depending on input optical signal power, gain level or changes in surrounding temperature. However, the optical amplifier of the present invention provides desired shapes of gain curves at various gain levels in spite of the reconfiguration of optical communication networks or the changes in driving conditions since the amplifier includes an active wavelength tunable filter and a gain detection system. The fiber light source of the present invention operates without external input light, producing spectrum-sliced output light from amplified spontaneous emission.

6. 发明授权

EP1013021B1 DYNAMIC OPTICAL AMPLIFIER 失效
标题翻译：动态光学放大器
公开(公告)号：EP1013021B1
公开(公告)日：2006-04-12
申请号：EP98931695.5
申请日：1998-06-25
申请人： JDS Uniphase Corporation
发明人： BALL, Gary, A. , SANDERS, Paul
IPC分类号： H04J14/02
CPC分类号： H04B10/2941 , H01S3/10023 , H01S3/1003
摘要： An optical amplifier for amplifying a plurality of signal components of a mult-wavelength optical beam passing through an optical fiber includes a portion of the optical fiber doped with a rare earth ion to amplify the optical signal wherein the gain spectrum as a function of the wavelength is nonuniform. The optical amplifier further includes a gain flattening module to compensate for the nonuniform gain spectrum of the doped fiber by attenuating each of the channels of the amplified signal to equalize the gain. A gain equalization module compensates for varying gain fluctuations due to the adding and subtracting of signal components. The gain equalization module adjusts dynamically each signal component of the optical beam such that the amplitudes of the signal components are substantially equal, in response to a plurality of control signals. Each control signal is representative of the degree of attenuation required to equalize the signal components. The respective control signals are generated by a loop status monitor that includes a waveguide for demultiplexing the optical beam, and a detector array that determines the amplitude of each signal component. A controller generates the control signals in dependence of the amplitude of the signal components.

7. 发明公开

EP0805571A3 Controller which controls a variable optical attentuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied 失效
标题翻译：可变光衰减器的控制器，用于控制一个光学波分复用信号的功率电平，如果信道的数目而变化
公开(公告)号：EP0805571A3
公开(公告)日：1999-09-29
申请号：EP97107189.9
申请日：1997-04-30
申请人： FUJITSU LIMITED
发明人： Sugaya, Yasushi , Kinoshita, Susumu
IPC分类号： H04J14/02 , H04B10/17
CPC分类号： H01S3/06758 , H01S3/10015 , H01S3/1003 , H01S3/1301 , H01S2301/04 , H04B10/291 , H04B10/2912 , H04B10/2931 , H04B10/2942 , H04B10/296 , H04B2210/003 , H04J14/0221
摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.
摘要翻译：的光放大装置，其在光放大器，在光衰减器和控制器包括。光放大器放大具有可变信道数目的光信号。光衰减器通过放大的光信号并具有可变的光透射率。之前改变光信号中的信道的数目时，控制器改变光衰减器的光透射率所以没有放大的光信号的功率电平维持在大约恒定的电平做取决于信道的光信号中的数之前的变化的信道的数目。而信道的光信号中的所述数目被改变时，控制器保持光衰减器的光透射率是恒定的。之后改变光信号中的信道的数目时，控制器改变光衰减器的光透射率所以没有放大的光信号的功率电平维持在大约恒定的电平做取决于信道的光信号中的数随后于变化的信道数。

8. 发明公开

EP3355422A1 WAVELENGTH TUNABLE EXTERNAL CAVITY QUANTUM CASCADE LASER UTILIZING AN ANGLE TUNED IMMERSION GRATING AS A WAVELENGTH SELECTION FILTER ELEMENT 有权
公开(公告)号：EP3355422A1
公开(公告)日：2018-08-01
申请号：EP17194803.7
申请日：2017-10-04
申请人： Agilent Technologies, Inc.
发明人： PARTRIDGE, Guthrie
IPC分类号： H01S5/14 , H01S5/34
CPC分类号： H01S5/141 , H01S3/08059 , H01S3/1003 , H01S3/1055 , H01S3/125 , H01S5/1025 , H01S5/1092 , H01S5/14 , H01S5/3401
摘要： A light source having a gain chip (87), a retro reflecting prism (81) and a first actuator (83) is disclosed. The gain chip amplifies light passing therethrough. The retro reflecting prism is characterized by a pivot axis (82) within the retro reflecting prism, an input light direction (84), an output light direction (85), and a diffraction grating that receives light emitted by the gain chip traveling in the input direction, returns a diffracted light beam to the gain chip along the input light direction and generates an output light beam. The first actuator causes the retro reflecting prism to rotate about the pivot axis in response to a control signal being coupled to the first actuator. The Pivot axis is positioned such that movement of the output beam as a function of the rotation angle is reduced.

9. 发明授权

EP2896096B1 REGENERATIVE OPTICAL AMPLIFIER FOR SHORT PULSED LASERS, A LASER SOURCE AND A LASER WORKSTATION 有权转让
公开(公告)号：EP2896096B1
公开(公告)日：2018-08-01
申请号：EP13720071.3
申请日：2013-03-13
申请人： UAB MGF "Sviesos Konversija"
发明人： DANIELIUS, Romualdas
IPC分类号： H01S3/107 , H01S3/00 , H01S3/08 , H01S3/23 , H01S3/081 , H01S3/10
CPC分类号： H01S3/235 , H01S3/005 , H01S3/0064 , H01S3/08054 , H01S3/0816 , H01S3/0915 , H01S3/094076 , H01S3/10023 , H01S3/1003 , H01S3/10046 , H01S3/10061 , H01S3/101 , H01S3/107 , H01S3/115 , H01S3/117
摘要： This invention provides a solution for operating a regenerative amplifier using a single electro-optical device, such as a Pockels cell. An efficient cavity geometry of a regenerative amplifier is provided for enabling pulse selection, coupling and releasing to an output by operating a single Pockels cell unit placed essentially in the middle of the optical cavity, between two polarizers, whereas a first polarizer is used for release of an amplified pulse and a second polarizer is used for injection of seed pulses and release of at least one of waste amplified pulses and seed pulses. One side of the cavity, with respect to the location of said Pockels cell, includes an empty space, whereas the other side is provided with a gain medium, which is pumped by a pump source. The regenerative amplifier of such optical design is both efficient and cost effective. The single electro-optical unit works both as the control unit for operating the regenerative amplifier and as an output pulse picker unit.

10. 发明公开

EP2936627A4 WAVELENGTH STABILIZATION 审中-公开
标题翻译：波长稳定
公开(公告)号：EP2936627A4
公开(公告)日：2016-08-31
申请号：EP13865213
申请日：2013-12-17
申请人： WELFORD DAVID , ELMAANAOUI BADR
发明人： WELFORD DAVID , ELMAANAOUI BADR
IPC分类号： H01S3/13
CPC分类号： H01S3/1305 , H01S3/067 , H01S3/083 , H01S3/1003 , H01S5/0687

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