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公开(公告)号：US08233214B2
公开(公告)日：2012-07-31
申请号：US12370556
申请日：2009-02-12
IPC分类号： H01S3/00
CPC分类号： H01S3/06754 , H01S3/06758 , H01S3/1305 , H01S3/2383 , H01S2301/04
摘要： A fiber amplifier having two erbium doped fiber coils and a pump laser diode optically coupled, through a fiber array, to a planar lightwave circuit, is described. A photodetector array, a multiport free-space optical isolator, and a strip of thin-film gain flattening filter are attached to a side surface of the planar lightwave circuit, which has a tunable optical power splitter for variably splitting the optical pump power for the laser diode between the two erbium doped fiber coils, and variable tilters for correcting the gain tilt of the amplifier. The variable splitter and the tilters are thermally tunable Mach-Zehnder interferometers.
摘要翻译： 描述了具有两个掺铒光纤线圈的光纤放大器和通过光纤阵列光学耦合到平面光波电路的泵激光二极管。 光电检测器阵列，多端口自由空间光隔离器和薄膜增益平坦化滤光器条附接到平面光波电路的侧表面，该平面光波电路具有可调谐光功率分配器，用于将光泵浦功率可变地分离 两个掺铒光纤线圈之间的激光二极管，以及用于校正放大器的增益倾斜的可变倾角。 可变分流器和倾斜器是热可调谐的马赫 - 曾德尔干涉仪。
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公开(公告)号：US08699125B2
公开(公告)日：2014-04-15
申请号：US12899402
申请日：2010-10-06
申请人： Maxim Bolshtyansky , Gregory Cowle
发明人： Maxim Bolshtyansky , Gregory Cowle
IPC分类号： H01S3/091
CPC分类号： H01S3/06754 , H01S3/06758 , H01S3/1305 , H01S3/2383 , H01S2301/04
摘要： A reconfigurable optical amplifier is formed of a plurality of optical switches and a plurality of fiber amplifier sections to provide a switchable amplifying network. A variable pump splitter provides pump light from an optical pump source to two or more fiber amplifier sections. The optical switches and variable pump splitters are formed in a planar lightwave circuit, which may further include pump WDM combiners, variable optical attenuators, tap couplers and other optical components, and to which monitoring photodiodes and the fiber amplifier sections are coupled. A same PLC can be used for a wide variety of reconfigurable optical amplifiers.
摘要翻译： 可重构光放大器由多个光开关和多个光纤放大器部分组成，以提供可切换放大网络。 可变泵分离器将来自光泵浦源的泵浦光提供给两个或更多个光纤放大器部分。 光开关和可变泵分离器形成在平面光波电路中，其可以进一步包括泵浦WDM组合器，可变光衰减器，抽头耦合器和其它光学部件，并且监控光电二极管和光纤放大器部分耦合到该光开关。 相同的PLC可用于各种可重新配置的光放大器。
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3.发明授权公开(公告)号：US08995048B2
公开(公告)日：2015-03-31
申请号：US13113059
申请日：2011-05-22
申请人： Maxim Bolshtyansky , Gregory Cowle
发明人： Maxim Bolshtyansky , Gregory Cowle
CPC分类号： H01S3/1301 , H01S3/06754 , H01S3/10015 , H01S3/2375 , H01S3/302 , H01S2301/04 , H04B10/296
摘要： A change in loading conditions of fiber amplifiers in an optical communications network causes rapid variations in the gain profile of the amplifiers due to spectral hole burning and stimulated Raman scattering. An apparatus for reducing such gain profile variations is described which monitors optical signal perturbations and reacts by adjusting pump powers of the amplifiers and, or fast variable optical attenuator according to a pre-determined function stored in the form of constants in controller's memory. The optical signal is monitored as total power, and the power of light after passing through one or more optical filters. The light detection is relatively fast, whereby the gain profile variations are compensated by fast controlled variable optical attenuator and pump power adjustment upon the change in loading conditions.
摘要翻译： 光通信网络中的光纤放大器的负载条件的变化由于光谱空穴燃烧和受激拉曼散射而导致放大器的增益曲线的快速变化。 描述了一种用于减小这种增益分布变化的装置，其监视光信号扰动并通过根据在控制器存储器中的常数形式存储的预定函数来调整放大器的泵浦功率和快速可变光衰减器来进行反应。 光信号作为总功率被监测，并且通过一个或多个滤光器后的光功率。 光检测相对较快，从而通过快速控制的可变光衰减器和负载条件变化时的泵浦功率调整来补偿增益曲线变化。
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4.发明申请公开(公告)号：US20090091819A1
公开(公告)日：2009-04-09
申请号：US12235041
申请日：2008-09-22
申请人： Maxim Bolshtyansky , Gregory Cowle
发明人： Maxim Bolshtyansky , Gregory Cowle
CPC分类号： H01S3/1301 , H01S3/06754 , H01S3/10015 , H01S3/2375 , H01S3/302 , H01S2301/04 , H04B10/296
摘要： A change in loading conditions of fiber amplifiers in an optical communications network causes rapid variations in the gain profile of the amplifiers due to spectral hole burning and stimulated Raman scattering. An apparatus for reducing such gain profile variations is described which monitors optical signal perturbations and reacts by adjusting pump powers of the amplifiers and, or fast variable optical attenuator according to a predetermined function stored in the form of constants in controller's memory. The optical signal is monitored as total power, and the power of light after passing through one or more optical filters. The light detection is relatively fast, whereby the gain profile variations are compensated by fast controlled variable optical attenuator and pump power adjustment upon the change in loading conditions.
摘要翻译： 光通信网络中的光纤放大器的负载条件的变化由于光谱空穴燃烧和受激拉曼散射而导致放大器的增益曲线的快速变化。 描述了一种用于减小这种增益分布变化的装置，其监视光信号扰动并通过根据以控制器存储器中的常数形式存储的预定函数来调节放大器的泵浦功率和快速可变光衰减器来进行反应。 光信号作为总功率被监测，并且通过一个或多个滤光器后的光功率。 光检测相对较快，从而通过快速控制的可变光衰减器和负载条件变化时的泵浦功率调整来补偿增益曲线变化。
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公开(公告)号：US08462430B2
公开(公告)日：2013-06-11
申请号：US13533878
申请日：2012-06-26
申请人： Maxim Bolshtyansky , Gregory Cowle
发明人： Maxim Bolshtyansky , Gregory Cowle
IPC分类号： H01S3/00
CPC分类号： H01S3/06754 , H01S3/06758 , H01S3/1305 , H01S3/2383 , H01S2301/04
摘要： An optical amplifier having two erbium doped fiber coils and a pump laser diode is described. A tunable optical power splitter is used for variably splitting the optical pump power for the laser diode between the two erbium doped fiber coils, and variable tilters can be used for correcting the gain tilt of the amplifier. The variable splitter and the tilters can include thermally tunable Mach-Zehnder interferometers.
摘要翻译： 描述了具有两个掺铒光纤线圈和泵激光二极管的光放大器。 可调谐光功率分配器用于可变地分离两个掺铒光纤线圈之间的激光二极管的光泵浦功率，并且可变倾斜可用于校正放大器的增益倾斜。 可变分流器和倾斜器可以包括热可调谐的马赫 - 曾德尔干涉仪。
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6.发明申请公开(公告)号：US20110292497A1
公开(公告)日：2011-12-01
申请号：US13113059
申请日：2011-05-22
申请人： Maxim Bolshtyansky , Gregory Cowle
发明人： Maxim Bolshtyansky , Gregory Cowle
CPC分类号： H01S3/1301 , H01S3/06754 , H01S3/10015 , H01S3/2375 , H01S3/302 , H01S2301/04 , H04B10/296
摘要： A change in loading conditions of fiber amplifiers in an optical communications network causes rapid variations in the gain profile of the amplifiers due to spectral hole burning and stimulated Raman scattering. An apparatus for reducing such gain profile variations is described which monitors optical signal perturbations and reacts by adjusting pump powers of the amplifiers and, or fast variable optical attenuator according to a pre-determined function stored in the form of constants in controller's memory. The optical signal is monitored as total power, and the power of light after passing through one or more optical filters. The light detection is relatively fast, whereby the gain profile variations are compensated by fast controlled variable optical attenuator and pump power adjustment upon the change in loading conditions.
摘要翻译： 光通信网络中的光纤放大器的负载条件的变化由于光谱空穴燃烧和受激拉曼散射而导致放大器的增益曲线的快速变化。 描述了一种用于减小这种增益分布变化的装置，其监视光信号扰动并通过根据在控制器存储器中的常数形式存储的预定函数来调整放大器的泵浦功率和快速可变光衰减器来进行反应。 光信号作为总功率被监测，并且通过一个或多个滤光器后的光功率。 光检测相对较快，从而通过快速控制的可变光衰减器和负载条件变化时的泵浦功率调整来补偿增益曲线变化。
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7.发明授权公开(公告)号：US07969647B2
公开(公告)日：2011-06-28
申请号：US12235041
申请日：2008-09-22
申请人： Maxim Bolshtyansky , Gregory Cowle
发明人： Maxim Bolshtyansky , Gregory Cowle
CPC分类号： H01S3/1301 , H01S3/06754 , H01S3/10015 , H01S3/2375 , H01S3/302 , H01S2301/04 , H04B10/296
摘要： A change in loading conditions of fiber amplifiers in an optical communications network causes rapid variations in the gain profile of the amplifiers due to spectral hole burning and stimulated Raman scattering. An apparatus for reducing such gain profile variations is described which monitors optical signal perturbations and reacts by adjusting pump powers of the amplifiers and, or fast variable optical attenuator according to a pre-determined function stored in the form of constants in controller's memory. The optical signal is monitored as total power, and the power of light after passing through one or more optical filters. The light detection is relatively fast, whereby the gain profile variations are compensated by fast controlled variable optical attenuator and pump power adjustment upon the change in loading conditions.
摘要翻译： 光通信网络中的光纤放大器的负载条件的变化由于光谱空穴燃烧和受激拉曼散射而导致放大器的增益曲线的快速变化。 描述了一种用于减小这种增益分布变化的装置，其监视光信号扰动并通过根据在控制器存储器中的常数形式存储的预定函数来调整放大器的泵浦功率和快速可变光衰减器来进行反应。 光信号作为总功率被监测，并且通过一个或多个滤光器后的光功率。 光检测相对较快，从而通过快速控制的可变光衰减器和负载条件变化时的泵浦功率调整来补偿增益曲线变化。
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公开(公告)号：US07289735B2
公开(公告)日：2007-10-30
申请号：US11098229
申请日：2005-04-04
申请人： Maxim Bolshtyansky , Nicholas King
发明人： Maxim Bolshtyansky , Nicholas King
CPC分类号： H01S3/0941 , H01S3/094073 , H01S3/094096 , H01S3/10061 , H01S3/1305 , H01S3/1312 , H01S3/302 , H04B10/532
摘要： A laser apparatus is disclosed combining polarized light beams from two optical emitters into a combined beam of light with controllable degree of polarization (DoP). The laser apparatus includes a polarization combiner for combining the polarized beams into the combined beam, an optical tap for separating out a portion of the combined beam, and a photodetector electrically coupled to a laser controller for providing a feedback signal. The controller distinctively modulates the polarized radiation of each of the emitters, detects modulation signals in the photodetector output and adjusts an output power ratio of the optical emitters for maintaining the DoP of the combined beam at a pre-determined level. The invention can be used for minimizing the DoP of pump radiation in Raman and EDFA pump laser modules combining multiple pump laser diodes.
摘要翻译： 公开了一种激光设备，其将来自两个光发射器的偏振光束组合成具有可控偏振度（DoP）的组合光束。 激光装置包括用于将偏振光束组合成组合光束的偏振组合器，用于分离组合光束的一部分的光学分接头，以及电耦合到激光控制器以提供反馈信号的光电检测器。 控制器分别调制每个发射器的偏振辐射，检测光电检测器输出中的调制信号，并调整光发射器的输出功率比，以将组合光束的DoP保持在预定的电平。 本发明可用于最小化组合多个泵激光二极管的拉曼和EDFA泵浦激光模块中泵浦辐射的DoP。
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公开(公告)号：US20050220161A1
公开(公告)日：2005-10-06
申请号：US11098229
申请日：2005-04-04
申请人： Maxim Bolshtyansky , Nicholas King
发明人： Maxim Bolshtyansky , Nicholas King
IPC分类号： H01S3/09 , H01S3/094 , H01S3/0941 , H01S3/13 , H01S3/131 , H01S3/30 , H04B10/135
CPC分类号： H01S3/0941 , H01S3/094073 , H01S3/094096 , H01S3/10061 , H01S3/1305 , H01S3/1312 , H01S3/302 , H04B10/532
摘要： A laser apparatus is disclosed combining polarized light beams from two optical emitters into a combined beam of light with controllable degree of polarization (DoP). The laser apparatus includes a polarization combiner for combining the polarized beams into the combined beam, an optical tap for separating out a portion of the combined beam, and a photodetector electrically coupled to a laser controller for providing a feedback signal. The controller distinctively modulates the polarized radiation of each of the emitters, detects modulation signals in the photodetector output and adjusts an output power ratio of the optical emitters for maintaining the DoP of the combined beam at a pre-determined level. The invention can be used for minimizing the DoP of pump radiation in Raman and EDFA pump laser modules combining multiple pump laser diodes.
摘要翻译： 公开了一种激光设备，其将来自两个光发射器的偏振光束组合成具有可控偏振度（DoP）的组合光束。 激光装置包括用于将偏振光束组合成组合光束的偏振组合器，用于分离组合光束的一部分的光学分接头，以及电耦合到激光控制器以提供反馈信号的光电检测器。 控制器分别调制每个发射器的偏振辐射，检测光电检测器输出中的调制信号，并调整光发射器的输出功率比，以将组合光束的DoP保持在预定的电平。 本发明可用于最小化组合多个泵激光二极管的拉曼和EDFA泵浦激光模块中泵浦辐射的DoP。
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10.发明授权公开(公告)号：US06801308B2
公开(公告)日：2004-10-05
申请号：US10369664
申请日：2003-02-21
IPC分类号： G01N2100
CPC分类号： G01M11/333 , G01M11/338
摘要： An apparatus for measuring chromatic dispersion in a waveguide uses a probe signal and a modulated pump signal which are coupled together into a waveguide. The modulated pump signal causes spatial and temporal Raman gain modulation of the probe signal. The amplitude of the pump signal is modulated and the frequency response of the probe signal at the output end of the waveguide is measured. The chromatic dispersion of the waveguide at a given wavelength is determined from the measurements. The probe signal is provided by a CW laser or corresponds to the ASE generated by the pump signal.
摘要翻译： 用于测量波导中的色散的装置使用耦合在一起成波导的探测信号和调制的泵浦信号。 调制的泵浦信号引起探测信号的空间和时间拉曼增益调制。 对泵浦信号的振幅进行调制，并测量波导输出端的探测信号的频率响应。 根据测量确定波长在给定波长处的色散。 探测信号由CW激光器提供或对应于由泵浦信号产生的ASE。
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