公开(公告)号：US20080310858A1

公开(公告)日：2008-12-18

申请号：US12050644

申请日：2008-03-18

Applicant: Yiquan LU ,  Congqi LI ,  Shanfeng LI

Inventor： Yiquan LU ,  Congqi LI ,  Shanfeng LI

IPC: H04B10/00

CPC classification number: H04J14/0221 ,  H04B10/296 ,  H04J14/021

Abstract: The present invention provides optical compensation for a submarine optical cable optical. A dummy light module generates a dummy light signal according to a continuous spectrum in a predetermined range and a combining module combines a service signal with the dummy light signal. When the dummy light is used for the compensation, conventional problems are solved, including complicated control, difficult realization of the pre-equalization function and inflexible configuration. When service signals are increased, the adjustment for the power of the dummy light signal is avoided; therefore, the control for the dummy light is simplified. In the pre-equalization operation, power control is only performed on the dummy light signal in the single channel or the continuous dummy light signal; therefore, the realization of the pre-equalization function is easy.

Abstract translation: 本发明为海底光缆光学提供光学补偿。 虚拟光模块根据预定范围内的连续光谱产生虚拟光信号，并且组合模块将服务信号与虚拟光信号组合。 当伪光用于补偿时，解决了常规问题，包括复杂的控制，难以实现预均衡功能和不灵活配置。 当服务信号增加时，避免了虚拟光信号的功率调整; 因此，对于虚拟光的控制被简化。 在均衡前的动作中，只对单声道的模拟光信号或连续的虚拟光信号进行功率控制， 因此，预均衡功能的实现很容易。

公开(公告)号：US07466478B2

公开(公告)日：2008-12-16

申请号：US11079426

申请日：2005-03-15

Applicant: Takuji Maeda ,  Haruki Tanaka ,  Hisayuki Ojima ,  Hiroaki Tomofuji ,  Hideaki Sugiya ,  Koji Batou

Inventor： Takuji Maeda ,  Haruki Tanaka ,  Hisayuki Ojima ,  Hiroaki Tomofuji ,  Hideaki Sugiya ,  Koji Batou

IPC: H04B10/17

CPC classification number: H04J14/0297 ,  H04B10/296 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0291 ,  H04J14/0295

Abstract: An optical-level control apparatus includes a plurality of variable optical attenuators each used for attenuating an input optical signal included in a wavelength division multiplexing signal as a component having a specific wavelength by applying a variable attenuation quantity, a plurality of control units each used for executing automatic control for automatically controlling the attenuation quantity in order to adjust the optical level of an optical signal output by a corresponding one of the variable optical attenuators to a target level in an ordinary normal state of the input optical signal, and a detection unit for detecting a loss of light failure of an optical signal input to each of the variable optical attenuators and detecting disappearance of the loss of light failure. When the detection unit detects the loss of light failure, a corresponding one of the control units executes first attenuation quantity locking control to adjust the attenuation quantity to a first predetermined value and as the detection unit detects the disappearance of the loss of light, the corresponding control unit executes second attenuation quantity locking control to adjust the attenuation quantity to a second predetermined value.

Abstract translation: 光学级控制装置包括多个可变光衰减器，每个可变光衰减器用于通过施加可变衰减量来衰减包括在波分复用信号中的输入光信号作为具有特定波长的分量;多个控制单元，每个用于 执行用于自动控制衰减量的自动控制，以便在输入光信号的普通正常状态下将由相应的一个可变光衰减器输出的光信号的光学电平调整到目标电平;以及检测单元， 检测输入到每个可变光衰减器的光信号的光衰的损失，并检测光故障损失的消失。 当检测单元检测到光损失时，对应的一个控制单元执行第一衰减量锁定控制，以将衰减量调整到第一预定值，并且随着检测单元检测到光损失的消失，相应的 控制单元执行第二衰减量锁定控制以将衰减量调整到第二预定值。

公开(公告)号：US07394590B2

公开(公告)日：2008-07-01

申请号：US11017160

申请日：2004-12-21

Applicant: Hiroshi Iizuka ,  Kousuke Komaki

Inventor： Hiroshi Iizuka ,  Kousuke Komaki

IPC: H01S4/00 ,  H04B10/12

CPC classification number: H01S3/06758 ,  H01S3/094003 ,  H01S3/0941 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1608 ,  H04B10/296

Abstract: There are provided an ASE correction unit which corrects control errors regarding either or both of the gain and the output level of the optical amplifier, which control errors are generated due to the ASE, and an ASE correction controller which controls the correction of the control errors by these ASE correction unit based on a predetermined time constant. Accordingly, the ASE correction errors of the optical amplifier, which performs the ASE correction are suppressed, and stabilization of the output signal light level and the optical amplification gain at the time of changes of the wavelength number can be attained.

Abstract translation: 提供了一个ASE校正单元，其校正关于光放大器的增益和输出电平中的一个或两个的控制误差，其由于ASE而产生控制误差;以及ASE校正控制器，其控制控制误差的校正 通过这些ASE校正单元基于预定的时间常数。 因此，抑制了执行ASE校正的光放大器的ASE校正误差，并且可以获得波长数变化时的输出信号光电平和光放大增益的稳定。

公开(公告)号：US20080131121A1

公开(公告)日：2008-06-05

申请号：US10596226

申请日：2004-11-22

Applicant: Roberto Magri ,  Cornilius Furst

Inventor： Roberto Magri ,  Cornilius Furst

IPC: H04B10/20 ,  H04J14/00

CPC classification number: H04B10/275 ,  H04B10/27 ,  H04B10/296 ,  H04J14/0201 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0245 ,  H04J14/0283

Abstract: A wavelength division multiplex optical ring network comprises optical fibre (1-4) arranged in a ring configuration and a plurality of doped fibre optical amplifiers (17-20) arranged in the ring. The spectral response in the ring is configured such in use amplified spontaneous emission (ASE) noise circulates around the ring in a lasing mode to clamp the gain of each doped fibre optical amplifier. Each optical amplifier (17-20) includes respective control means (28) which in use control the optical amplifier to produce a substantially constant output power or to maintain a substantially constant pump power. In the event of loss of the lasing peak, detection means switches the doped fibre optical amplifiers to a different mode of gain control, for example, a mode to produce constant gain at the value before the loss of the lasing peak. Optionally, after a predetermined delay, the optical amplifiers may revert to constant output power or pump power mode. Loss of the peak could be detected by a peak detection circuit (27), which filters by means of filter (26) a fraction of the input or output power of the optical amplifier using splitters and/or by detection of a drop in amplifier input power.

Abstract translation: 波分复用光环网包括以环形布置的光纤（1-4）和布置在环中的多个掺杂光纤放大器（17-20）。 环中的光谱响应被配置为使用放大自发发射（ASE）噪声以激光模式在环周围循环，以钳位每个掺杂光纤光放大器的增益。 每个光放大器（17-20）包括各自的控制装置（28），其在使用中控制光放大器以产生基本恒定的输出功率或维持基本恒定的泵浦功率。 在发射激光峰值的情况下，检测装置将掺杂的光纤放大器切换到不同的增益控制模式，例如，在激光器峰值损耗之前产生恒定增益的模式。 可选地，在预定延迟之后，光放大器可以恢复到恒定的输出功率或泵功率模式。 可以通过峰值检测电路（27）检测峰值的损失，峰值检测电路（27）利用滤波器​​（26）利用分离器对光放大器的输入或输出功率的一部分进行滤波和/或通过检测放大器输入端的下降 功率。

公开(公告)号：US20080068700A1

公开(公告)日：2008-03-20

申请号：US11931944

申请日：2007-10-31

Applicant: Ryo KAWAHARA ,  Masaru Fukushima ,  Nobuyuki Kagi ,  Kensaku Sekiya

Inventor： Ryo KAWAHARA ,  Masaru Fukushima ,  Nobuyuki Kagi ,  Kensaku Sekiya

IPC: H01S3/094 ,  H01S3/10 ,  H04B10/12

CPC classification number: H04B10/296 ,  H01S3/094003 ,  H01S3/1312 ,  H01S2301/04 ,  H04B2210/003

Abstract: A proportional constant adjusting circuit is arranged in the AGC circuit of the optical amplifying apparatus, and the proportional constant of the proportional circuit is continuously adjusted in correspondence to the optical input power monitored by the PD and the logarithmic transformation circuit. The AGC circuit controls the pump LD based on the monitored optical input/output power so as to control the gain of the optical amplifier to be a requested value.

Abstract translation: 在光放大装置的AGC电路中配置比例常数调整电路，并且对应于由PD和对数变换电路监视的光输入功率，连续地调整比例电路的比例常数。 AGC电路基于所监视的光输入/输出功率来控制泵LD，以便将光放大器的增益控制为请求值。

公开(公告)号：US20080056725A1

公开(公告)日：2008-03-06

申请号：US11751365

申请日：2007-05-21

Applicant: Heinz-Dieter Hettstedt ,  Axel Schroder ,  Gerd Klauke ,  Alexander Thomas

Inventor： Heinz-Dieter Hettstedt ,  Axel Schroder ,  Gerd Klauke ,  Alexander Thomas

IPC: H04B10/12

CPC classification number: H04B10/2575 ,  H04B10/296

Abstract: The invention relates to an optical transmission system comprising transmitter and receiver devices and comprising automatic optical signal level configuration means which provide the same fixed output signal level for a received signal level range, and the system comprising at least one automatic self-level unit in the transmitter device and at least one automatic self-level unit in the receiver device.

Abstract translation: 本发明涉及一种光传输系统，包括发射机和接收机设备，并且包括自动光信号电平配置装置，其为接收信号电平范围提供相同的固定输出信号电平，并且该系统包括至少一个自动自级别单元 发射机设备和接收机设备中的至少一个自动自级别单元。

公开(公告)号：US20080024859A1

公开(公告)日：2008-01-31

申请号：US11878801

申请日：2007-07-26

Applicant: Shinobu Tamaoki

Inventor： Shinobu Tamaoki

IPC: H04B10/12

CPC classification number: H04B10/296 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301

Abstract: The present invention relates to an optical amplifier provided with a plurality of optically cascade-connected amplification units and also with a structure for enabling suppression of transient gain variations as a whole. Each of the plurality of amplification units in the optical amplifier has a pumping light source and an amplifying optical fiber, and at least one selected from the plurality of amplification units includes a timing adjustment system for temporally moving back or forth the variation timing of pumping light power accompanying the signal light power variation due to the variation of the number of signal channels, with respect to the variation timing of signal light power at a light incident end of the amplifying optical fiber contained in the own amplification unit.

Abstract translation: 本发明涉及一种具有多个光级联连接的放大单元的光放大器，并且还具有能够整体抑制瞬态增益变化的结构。 光放大器中的多个放大单元中的每一个具有泵浦光源和放大光纤，并且从多个放大单元中选择的至少一个放大单元包括用于在时间上来回移动泵浦光的变化定时的定时调整系统 相对于包含在本放大单元中的放大光纤的光入射端的信号光功率的变化定时，由于信号通道数量的变化而伴随信号光功率变化的功率。

公开(公告)号：US07302183B2

公开(公告)日：2007-11-27

申请号：US10345262

申请日：2003-01-16

Applicant: Kenro Sekine

Inventor： Kenro Sekine

IPC: H04J14/02 ,  H04B10/00

CPC classification number: H04B10/296 ,  H04B10/0775 ,  H04B10/25073 ,  H04J14/0221

Abstract: In the variable gain compensating apparatus, input power of optical amplifiers employed in respective optical repeaters is monitored, and the monitored input power is transferred to a down-stream side by using supervisor (SV) light. In a repeater equipped with a variable gain tilt compensator, input power monitor information of the optical amplifiers employed in the respective repeaters provided on the upper stream side is acquired from a supervisor signal. While utilizing a linear relationship established between a gain tilt of an optical amplifier and input power of the optical amplifier, the acquired input power monitor information is compared with a reference power value so as to calculate gain tilt amounts of the respective optical amplifiers. Then, the optimum gain tilt compensation amount of the variable gain tilt compensator is determined based upon the calculated gain tilt amounts.

Abstract translation: 在可变增益补偿装置中，监视在各个光中继器中使用的光放大器的输入功率，并且通过使用监控器（SV）光将所监视的输入功率传送到下游侧。 在配备有可变增益倾斜补偿器的中继器中，从监视器信号获取在上游侧设置的各个中继器中采用的光放大器的输入功率监视信息。 在利用在光放大器的增益倾斜与光放大器的输入功率之间建立的线性关系的同时，将所获取的输入功率监视信息与参考功率值进行比较，以计算各个光放大器的增益倾斜量。 然后，基于计算出的增益倾斜量来确定可变增益倾斜补偿器的最佳增益倾斜补偿量。

公开(公告)号：US20070201876A1

公开(公告)日：2007-08-30

申请号：US11742508

申请日：2007-04-30

Applicant: Yasushi SUGAYA

Inventor： Yasushi SUGAYA

IPC: H04B10/12

CPC classification number: H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

Abstract: 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.

Abstract translation: 一种光放大装置，包括光放大器，光衰减器和控制器。 光放大器放大具有可变通道数的光信号。 光衰减器通过放大的光信号并具有可变的透光率。 在改变光信号中的通道数量之前，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 在改变频道数之前。 虽然光信号中的信道数量正在变化，但是控制器保持光衰减器的光透射率是恒定的。 在改变光信号中的通道数量之后，控制器改变光衰减器的透光率，使得放大的光信号的功率电平保持在大致恒定的水平，这取决于光信号中的通道数 随后改变频道数量。

公开(公告)号：US07251071B2

公开(公告)日：2007-07-31

申请号：US10903588

申请日：2004-07-30

Applicant: Daniel C. Kilper ,  Claude A. Martell ,  Narasimhan Raghavan ,  David A. Sadler ,  Christopher A. White

Inventor： Daniel C. Kilper ,  Claude A. Martell ,  Narasimhan Raghavan ,  David A. Sadler ,  Christopher A. White

IPC: H04B10/08 ,  H01S3/00

CPC classification number: H04J14/0221 ,  H04B10/2916 ,  H04B10/296 ,  H04J14/0201 ,  H04J14/0208 ,  H04J14/0213

Abstract: In an optical transmission system, operations of certain elements are adjusted in an individualized manner after detecting a change in the total optical power level corresponding to multiple optical channels in a link of the system in order to control transients in those channels. For example, in response to a sudden drop in the number of channels resulting from a fiber cut, the power levels of the optical pumps in a Raman amplifier in an OADM are adjusted to reduce transient gain errors in the surviving channels, where the adjustment to the pump power level for each different optical pump is a function of both the detected change in the total optical power level and at least one specified coefficient for that particular optical pump, in order to handle non-linearities in the response of the Raman amplifier to the sudden drop in the number of optical channels.

Abstract translation: 在光传输系统中，为了控制这些信道中的瞬变，在检测到与系统的链路中的多个光信道相对应的总光功率电平的变化之后，以个体化的方式调整某些元件的操作。 例如，响应于由光纤切断引起的通道数量的突然下降，调整OADM中的拉曼放大器中的光泵的功率电平，以减少存活通道中的瞬态增益误差，其中调整 每个不同光泵的泵浦功率电平是检测到的总光功率电平的变化和该特定光泵的至少一个特定系数的函数，以便处理拉曼放大器的响应中的非线性 光通道数量突然下降。