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公开(公告)号：US08208812B2
公开(公告)日：2012-06-26
申请号：US12299065
申请日：2006-05-25
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H04B10/296 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/021 , H04J14/0227 , H04J14/0246 , H04J14/0279
摘要： A control-target-value setting unit sets a control target value corresponding to the number of multiplexed wavelengths measured by a number-of-multiplexed-wavelengths measuring unit. A controller controls the variable optical attenuator based on the control target value. An optical amplifier performs an optical amplification with a constant gain regardless of power of a wavelength-multiplexed light. The controller performs feedback control of the variable optical attenuator such that a result of measurement of the total power of the wavelength-multiplexed light coincides with the control target value.
摘要翻译： 控制目标值设定单元设定与多路复用波长测量单元测得的复用波长数对应的控制对象值。 控制器根据控制目标值控制可变光衰减器。 无论波分复用光的功率如何，光放大器都以恒定的增益进行光放大。 控制器执行可变光衰减器的反馈控制，使得波分复用光的总功率的测量结果与控制目标值一致。
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公开(公告)号：US20100239263A1
公开(公告)日：2010-09-23
申请号：US12299065
申请日：2006-05-25
IPC分类号： H04J14/02
CPC分类号： H04J14/0221 , H04B10/296 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/021 , H04J14/0227 , H04J14/0246 , H04J14/0279
摘要： A control-target-value setting unit sets a control target value corresponding to the number of multiplexed wavelengths measured by a number-of-multiplexed-wavelengths measuring unit. A controller controls the variable optical attenuator based on the control target value. An optical amplifier performs an optical amplification with a constant gain regardless of power of a wavelength-multiplexed light. The controller performs feedback control of the variable optical attenuator such that a result of measurement of the total power of the wavelength-multiplexed light coincides with the control target value.
摘要翻译： 控制目标值设定单元设定与多路复用波长测量单元测得的复用波长数对应的控制对象值。 控制器根据控制目标值控制可变光衰减器。 无论波分复用光的功率如何，光放大器都以恒定的增益进行光放大。 控制器执行可变光衰减器的反馈控制，使得波分复用光的总功率的测量结果与控制目标值一致。
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公开(公告)号：US07218441B2
公开(公告)日：2007-05-15
申请号：US10482223
申请日：2003-01-27
CPC分类号： H01S3/302 , H01S3/06754 , H01S3/094003 , H01S3/094073 , H01S5/146
摘要： A laser light source outputs a virtually linearly-polarized light beam that has plural mode components arranged at an interval of an almost equal angular frequency. A polarization dispersion device is connected to the laser light source in such a way that a polarization axis of the polarization dispersion device is at 45° with respect to a polarization axis of the light beam output from the laser light source. This polarization dispersion device effects on the light beam output from the laser light source a polarization mode dispersion that is not in the vicinity of (2π/Δω), where Δω is a mode interval angular frequency.
摘要翻译： 激光源输出具有以几乎相等的角频率间隔排列的多个模式分量的虚拟线性偏振光束。 偏振色散装置以激光光源输出的光束的偏振轴相对于偏振光分散装置的偏振轴为45°的方式与激光光源连接。 该偏振色散装置对来自激光光源的光束产生不在（2pi / Deltaomega）附近的偏振模色散，其中Deltaomega是模式间隔角频率。
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4.发明授权公开(公告)号：US06657778B1
公开(公告)日：2003-12-02
申请号：US09806456
申请日：2001-04-18
IPC分类号： H04B1012
CPC分类号： H04B10/2941 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals are demultiplexed or separated into individual bands and amplified by first to n-th fixed-gain optical amplifiers (#1, . . . , #n) each having a high fixed gain in the respective bands to be subsequently multiplexed by an optical multiplexer and then sent out onto a transmission line. A monitoring light branching device extracts a part of light power of a specific monitoring wavelength, which is then fed to an adjustable attenuator control circuit which controls the attenuation factor of the adjustable optical attenuator so that the light power of the specific wavelength remains constant. The gain of the optical amplifying repeater apparatus at the specific wavelength can thus be determined. By employing as the optical amplifying medium a substantially homogeneous medium, the gain for the other wavelengths can be fixed. The optical amplifying repeater apparatus whose gain is essentially independent of the change in the number of the wavelengths can thus be realized.
摘要翻译： 第一至第n个频带放大的光信号通过可调节的光衰减器经过适当的衰减，其符合连接到光放大中继器设备的输入的光纤中的衰减，其中光信号被解复用或分离成单个频带， 由第一至第n固定增益光放大器（＃1，...，#n）放大，每个固定增益光放大器（＃1，...，#n）在各个频带中具有高固定增益，随后由光复用器复用，然后发送到传输线。 监视光分支装置提取特定监视波长的一部分光功率，然后将其馈送到可调节衰减器控制电路，该可调节衰减器控制电路控制可调节光衰减器的衰减因子，使得特定波长的光功率保持恒定。 因此可以确定特定波长的光放大中继器装置的增益。 通过采用基本均匀的介质作为光放大介质，可以固定其它波长的增益。 因此可以实现其增益基本上与波长数量的变化无关的光放大中继器装置。
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5.发明授权公开(公告)号：US07170673B2
公开(公告)日：2007-01-30
申请号：US10713259
申请日：2003-11-17
CPC分类号： H04B10/2941 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals are demultiplexed or separated into individual bands and amplified by first to n-th fixed-gain optical amplifiers (#1, . . . , #n) each having a high fixed gain in the respective bands to be subsequently multiplexed by an optical multiplexer and then sent out onto a transmission line. A monitoring light branching device extracts a part of light power of a specific monitoring wavelength, which is then fed to an adjustable attenuator control circuit which controls the attenuation factor of the adjustable optical attenuator so that the light power of the specific wavelength remains constant. The gain of the optical amplifying repeater apparatus at the specific wavelength can thus be determined. By employing as the optical amplifying medium a substantially homogeneous medium, the gain for the other wavelengths can be fixed. The optical amplifying repeater apparatus whose gain is essentially independent of the change in the number of the wavelengths can thus be realized.
摘要翻译： 第一至第n个频带放大的光信号通过可调节的光衰减器经过适当的衰减，其符合连接到光放大中继器设备的输入的光纤中的衰减，其中光信号被解复用或分离成单个频带， 由第一至第n固定增益光放大器（＃1，...，#n）放大，每个固定增益光放大器（＃1，...，#n）在各个频带中具有高固定增益，随后由光复用器复用，然后发送到传输线。 监视光分支装置提取特定监视波长的一部分光功率，然后将其馈送到可调节衰减器控制电路，该可调节衰减器控制电路控制可调节光衰减器的衰减因子，使得特定波长的光功率保持恒定。 因此可以确定特定波长的光放大中继器装置的增益。 通过采用基本均匀的介质作为光放大介质，可以固定其它波长的增益。 因此可以实现其增益基本上与波长数量的变化无关的光放大中继器装置。
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6.发明授权公开(公告)号：US06873456B2
公开(公告)日：2005-03-29
申请号：US10217110
申请日：2002-08-12
IPC分类号： H04B10/294 , H04B10/296 , H04J14/02 , H01S3/00
CPC分类号： H04B10/2941 , H04B10/296 , H04B2210/258 , H04J14/0221
摘要： Light signals of first to n-th bands amplified en bloc undergo proper attenuation through an adjustable optical attenuator in conformance with attenuation in an optical fiber connected to input of an optical amplifying repeater apparatus, whereon the light signals are demultiplexed or separated into individual bands and amplified by first to n-th fixed-gain optical amplifiers (#1, . . . , #n) each having a high fixed gain in the respective bands to be subsequently multiplexed by an optical multiplexer and then sent out onto a transmission line. A monitoring light branching device extracts a part of light power of a specific monitoring wavelength, which is then fed to an adjustable attenuator control circuit which controls the attenuation factor of the adjustable optical attenuator so that the light power of the specific wavelength remains constant. The gain of the optical amplifying repeater apparatus at the specific wavelength can thus be determined. By employing as the optical amplifying medium a substantially homogeneous medium, the gain for the other wavelengths can be fixed. The optical amplifying repeater apparatus whose gain is essentially independent of the change in the number of the wavelengths can thus be realized.
摘要翻译： 第一至第n个频带放大的光信号通过可调节的光衰减器经过适当的衰减，其符合连接到光放大中继器设备的输入的光纤中的衰减，其中光信号被解复用或分离成单个频带， 由第一至第n固定增益光放大器（＃1，...，#n）放大，每个固定增益光放大器（＃1，...，#n）在各个频带中具有高固定增益，随后由光复用器复用，然后发送到传输线。 监视光分支装置提取特定监视波长的一部分光功率，然后将其馈送到可调节衰减器控制电路，该可调节衰减器控制电路控制可调节光衰减器的衰减因子，使得特定波长的光功率保持恒定。 因此可以确定特定波长的光放大中继器装置的增益。 通过采用基本均匀的介质作为光放大介质，可以固定其它波长的增益。 因此可以实现其增益基本上与波长数量的变化无关的光放大中继器装置。
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公开(公告)号：US5506724A
公开(公告)日：1996-04-09
申请号：US309921
申请日：1994-09-21
IPC分类号： G02F1/35 , H01S3/094 , H01S3/13 , H04B10/07 , H04B10/293 , H04B10/294 , H04B10/564 , H04B10/572 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/296 , H01S3/094003 , H01S3/1301 , H01S2301/06 , H01S3/094011 , H01S3/094023
摘要： An optical fiber which amplifies an input signal by a pump source, a compensation-signal source which injects a compensation-signal propagating contra-directionally with respect to the input signal Into the optical fiber, a gain detector which measures a spontaneous emission light of the pump source at an input side of the optical fiber and a compensation-signal source controller which controls output of the compensation-signal source based on output of the gain detector are provided. In addition, a coupler and a wavelength selective reflector which reflects a light of the same wavelength as the compensation-signal selectively, are provided at the input side of the optical fiber.
摘要翻译： 一种通过泵浦源放大输入信号的光纤，将与输入信号相反方向传播的补偿信号注入到光纤中的补偿信号源，测量自发发射光的增益检测器， 提供了在光纤的输入侧的泵浦源，以及基于增益检测器的输出来控制补偿信号源的输出的补偿信号源控制器。 此外，在光纤的输入侧设置耦合器和选择性地反射与补偿信号相同波长的光的波长选择性反射器。
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公开(公告)号：US06989717B2
公开(公告)日：2006-01-24
申请号：US10477945
申请日：2002-12-03
IPC分类号： H03F3/08
CPC分类号： H03G3/3084 , H03F3/087 , H03F2200/78 , H04B10/695
摘要： A pre-amplifier amplifies an output current of a photodetector that converts a burst optical signal into an electrical signal, and outputs an electric voltage signal. A gain switching circuit is connected with a serial circuit comprising a resistor and a switch and a serial circuit comprising a resistor and a switch, in parallel with a feedback resistor. The gain switching circuit includes an arrangement to receive the electric voltage signal output from the pre-amplifier, close the switch at a specific bit position, close the switch at the other specific bit position, upon occurrence of a situation that the switch is to be closed, provided that the switch is closed.
摘要翻译： 前置放大器放大将突发光信号转换为电信号的光检测器的输出电流，并输出电压信号。 增益切换电路与包括电阻器和开关的串联电路和包括与反馈电阻并联的电阻器和开关的串联电路连接。 增益切换电路包括用于接收从前置放大器输出的电压信号的装置，在特定位位置闭合开关，在发生开关的情况下在另一特定位位置闭合开关 关闭，只要开关闭合。
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公开(公告)号：US4940306A
公开(公告)日：1990-07-10
申请号：US300786
申请日：1989-01-23
IPC分类号： G02B6/28 , H04B10/272
CPC分类号： H04B10/2725 , G02B6/2808 , H04B10/272
摘要： A star network optical transmission system comprising a star coupler as a center node, wherein a star coupler is provided with an optical fiber exhibiting a multimode transmission characteristic to an optical signal transmitted by said star coupler at an input portion and an output portion, an optical transmission apparatus having a laser with a wavelength of .lambda. as a light source, an up optical fiber exhibiting a single mode transmission characteristic to a wavelength of .lambda. connecting the optical transmission apparatus to the star coupler, an optical reception apparatus, and a down optical fiber exhibiting a multimode transmission characteristic at a wavelength .lambda. and connecting the optical reception apparatus to said star coupler.
摘要翻译： 一种星形网络光传输系统，包括星形耦合器作为中心节点，其中星形耦合器设置有对由输入部分和输出部分上由所述星形耦合器传输的光信号呈现多模传输特性的光纤，光学 具有波长为λ的激光作为光源的发送装置，向光耦合器连接光传输装置的呈波长λ的单模传输特性的上光纤，光接收装置和下光纤 呈现波长λ的多模传输特性并将光接收装置连接到所述星形耦合器。
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公开(公告)号：US06215368B1
公开(公告)日：2001-04-10
申请号：US09337730
申请日：1999-06-22
申请人： Hitoyuki Tagami , Kuniaki Motoshima
发明人： Hitoyuki Tagami , Kuniaki Motoshima
IPC分类号： H03B512
CPC分类号： H03K3/0322 , H03K3/0231 , H03K3/03
摘要： Voltage controlling/oscillating device comprises a terminal for setting the delay rate in the delay unit and the delay interpolator. Clock signal whose phase is inverted by the inverting gate is inputted into a first input terminal of the delay interpolator and into the delay unit. The delay unit delays the signal by d1 and inputs into second input terminal of the delay interpolator. Oscillation frequency control voltage is fed into a terminal of the delay interpolator through an oscillation frequency control terminal of the device. Delay control voltage is fed into a terminal of the device in order to control a propagation delay rate in the delay unit and the delay interpolator. The delay rate in a delay unit and a delay interpolator can be adjusted by a delay control voltage.
摘要翻译： 电压控制/振荡装置包括用于设置延迟单元和延迟内插器中的延迟速率的端子。 相位被反相门反相的时钟信号被输入到延迟内插器的第一输入端并进入延迟单元。 延迟单元将信号延迟d1并输入到延迟插值器的第二输入端。 振荡频率控制电压通过器件的振荡频率控制端子馈送到延迟插补器的端子。 延迟控制电压被馈送到设备的终端中，以便控制延迟单元和延迟内插器中的传播延迟速率。 可以通过延迟控制电压来调整延迟单元和延迟内插器中的延迟率。
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