-
公开(公告)号：US07006771B1
公开(公告)日：2006-02-28
申请号：US09495715
申请日：2000-02-01
申请人： Hideyuki Miyata , Hiroshi Onaka
发明人： Hideyuki Miyata , Hiroshi Onaka
IPC分类号： H04B10/04
CPC分类号： H04B10/50575 , G02F2203/20 , H04B10/50595 , H04B10/572 , H04B10/58 , H04J14/0201 , H04J14/0221 , H04J14/0227 , H04J14/0246 , H04J14/0276 , H04J14/0283
摘要： The present invention relates to an optical communication apparatus for detecting the intensity of light in an optical modulator or the intensity of a modulation signal and for controlling the operating point of the optical modulator based on the result of detection. In the optical communication apparatus having such a configuration, the operating point of the optical modulator can be kept stable even when the input light or the modulation signal is temporarily non-existent in the optical communication apparatus.
-
32.发明申请Optical apparatus with loss compensation capability and optical amplifier for loss compensation 有权具有损耗补偿能力的光学设备和用于损耗补偿的光学放大器公开(公告)号：US20050088727A1
公开(公告)日：2005-04-28
申请号：US10950699
申请日：2004-09-28
CPC分类号： H04B10/291 , H01S3/1305 , H01S3/1312 , H01S5/0683 , H01S5/50
摘要： An optical apparatus having a loss compensation capability includes between an input connector 1A and an output connector 1B an input side optical parts 2 including an input monitor, an amplification medium 3, a loss medium 4, and an output side optical parts 5 including an output monitor in this order, and is provided with a control circuit 6 for controlling a gain based on a monitor result of input/output light. The amount of reflection attenuation on all points, on which the light can be reflected on the optical path from the output end of the amplification medium 3 to the output connector 1B, can be smaller than the amount of reflection attenuation on the end face of the output connector 1B.
摘要翻译： 具有损耗补偿能力的光学装置在输入连接器1A和输出连接器1B之间包括输入侧光学部件2，输入侧光学部件2包括输入监视器，放大介质3，损耗介质4和输出侧光学部件5，包括 输出监视器，并且设置有用于基于输入/输出光的监视结果来控制增益的控制电路6。 光可以从放大介质3的输出端到输出连接器1B的光路上反射的所有点上的反射衰减量可以小于在放大介质3的端面上的反射衰减量 输出连接器1B。
-
33.发明授权公开(公告)号：US06594069B1
公开(公告)日：2003-07-15
申请号：US10106783
申请日：2002-03-27
申请人： Tadao Nakazawa , Hideyuki Miyata
发明人： Tadao Nakazawa , Hideyuki Miyata
IPC分类号： G02F129
CPC分类号： H04J14/0209 , G02F1/116 , H04J14/021 , H04J14/0219
摘要： The present invention aims at providing a control method and a control apparatus for controlling variable selected wavelengths at respective stages with high accuracy and reliability, to obtain desired wavelength characteristics, in a multi-staged band rejection type optical wavelength variable filter. To this end, the optical wavelength variable filter in the present invention has wavelength characteristics formed with a blocking band including a wavelength width according to a deviation amount obtained by deviating respective selected wavelengths from one another of a plurality of optical filter sections that are cascade connected, and the control apparatus for controlling the wavelength characteristics of this optical wavelength variable filter comprises a dropped light monitoring section that takes out to monitor a dropped light to be blocked from passing through at the optical filter section corresponding to the selected wavelength most closest to the center wavelength of the blocking band, among the plurality of selected wavelengths; and a selected wavelength controlling section that adjusts the respective selected wavelengths based on a peak wavelength of the dropped light.
摘要翻译： 本发明的目的在于提供一种控制方法和控制装置，用于在多级带阻抗型光波长可变滤波器中以高精度和可靠性在各个级别控制可变选择波长以获得期望的波长特性。 为此，本发明中的光波长可变滤波器具有波长特性，该波长特性形成有阻挡带，该阻挡带包括波长宽度，该波长宽度根据通过级联连接的多个滤光器部分中的各个选定波长偏离而获得的偏移量 并且用于控制该光波长可变滤波器的波长特性的控制装置包括一个下落光监测部分，该光束监测部分取出以监测被遮挡的光线在对应于最接近 在多个选择的波长中的阻挡带的中心波长; 以及选择的波长控制部，其根据落下的光的峰值波长来调整各选择的波长。
-
34.发明授权公开(公告)号：US06417945B2
公开(公告)日：2002-07-09
申请号：US09799639
申请日：2001-03-07
IPC分类号： H04J1402
CPC分类号： G02B6/29377 , G02B6/4215 , H04B10/25133 , H04B10/2525 , H04B10/25253 , H04B10/255 , H04B10/2563 , H04B2210/252 , H04B2210/254 , H04B2210/258 , H04J14/02 , H04J14/0224
摘要： An optical transmission system in which a wavelength-division-multplexed (WDM) optical signal including a plurality of optical signals having different wavelengths is demultiplexed into first optical signals and second optical signals. The second optical signals have wavelengths longer than wavelengths of the first optical signals. A first dispersion compensator compensates dispersion of the first optical signals. A second dispersion compensator compensates dispersion of the second optical signals. The dispersion compensated first and second optical signals are then multiplexed together.
摘要翻译： 一种光传输系统，其中包括具有不同波长的多个光信号的波分复用（WDM）光信号被解复用为第一光信号和第二光信号。 第二光信号具有比第一光信号的波长长的波长。 第一色散补偿器补偿第一光信号的色散。 第二色散补偿器补偿第二光信号的色散。 然后将色散补偿的第一和第二光信号复用在一起。
-
35.发明授权
公开(公告)号：US5636046A
公开(公告)日：1997-06-03
申请号：US425616
申请日：1995-04-20
IPC分类号： H04J14/00 , G02B6/34 , H04B10/2507 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/299 , H04J14/02 , H04B10/00
CPC分类号： G02B6/29377 , G02B6/4215 , H04B10/25133 , H04B10/2525 , H04B10/25253 , H04B10/255 , H04B10/2563 , H04J14/0224 , H04B2210/252 , H04B2210/254 , H04B2210/258 , H04J14/02
摘要： The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of a zero dispersion wavelength of an optical fiber is used and optical signals are disposed at efficient channel spacings taking an influence of the band, the wavelength dispersion and the four wave mixing into consideration to realize an optical communication system of an increased capacity which is not influenced by crosstalk by FWM. When optical signals of a plurality of channels having different wavelengths are to be multiplexed and transmitted using an optical fiber, a four wave mixing suppressing guard band of a predetermined bandwidth including the zero-dispersion wavelength .lambda..sub.0 of the optical fiber is set, and signal light waves of the plurality of channels to be multiplexed are arranged on one of the shorter wavelength side and the longer wavelength side outside the guard band.
摘要翻译： 本发明提供一种光波长多路复用传输方法，其中使用光纤零色散波长附近的频带，并且将光信号设置在影响频带，波长色散和四波混频的有效信道间隔处 考虑到实现不受FWM串扰影响的增加容量的光通信系统。 当使用光纤复用并发送具有不同波长的多个信道的光信号时，设置包括光纤的零色散波长λ0的预定带宽的四波混频抑制保护带，并且信号 要复用的多个信道的光波被布置在保护带外部的较短波长侧和较长波长侧中的一个上。
-
36.发明授权
公开(公告)号：US5602666A
公开(公告)日：1997-02-11
申请号：US425573
申请日：1995-04-20
IPC分类号： H04J14/00 , G02B6/34 , H04B10/2507 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/299 , H04J14/02 , H04B10/00
CPC分类号： G02B6/29377 , G02B6/4215 , H04B10/25133 , H04B10/2525 , H04B10/25253 , H04B10/255 , H04B10/2563 , H04J14/0224 , H04B2210/252 , H04B2210/254 , H04B2210/258 , H04J14/02
摘要： An optical wavelength multiplex transmission method uses a band around a zero dispersion wavelength of an optical fiber to compensate for waveform degradation, which is produced by a synergetic effect of self phase modulation and chromatic dispersion, to increase transmission distance and transmission rate in optical systems. The optical dispersion compensation method is performed in an optical system including a transmitter, a repeater and a receiver, which collectively transmit and receive optical information along the optical fiber. Light is transmitted within a transmissible band which is defined by an allowable dispersion value determined from a synergetic effect of self phase modulation and group velocity dispersion in the optical fiber. The transmissible band is set on a shorter wavelength side than a shorter wavelength end .lambda..theta.-.DELTA..lambda..theta. or on a longer wavelength side than a longer wavelength end .lambda..theta.+.DELTA..lambda..theta. of the zero-dispersion wavelength deviation range of the optical fiber. The zero dispersion wavelength .DELTA..theta. of the optical fiber is shifted to apparently arrange the signal light into the transmissible band to compensate for the dispersion amount of the optical transmission system.
摘要翻译： 光波长复用传输方法使用光纤的零色散波长附近的频带来补偿由自相位调制和色散的协同效应产生的波形劣化，以增加光学系统中的传输距离和传输速率。 光学色散补偿方法在包括发射机，中继器和接收机的光学系统中执行，该光学系统共同地沿光纤发送和接收光学信息。 光在透射带内传输，其由通过光纤中的自相位调制和群速度色散的协同效应确定的容许色散值限定。 透射带设置在比较短波长端λθ-ΔTATAθ较短的波长侧，或者在比光纤的零色散波长偏差范围的较长波长端λθ+ΔTATAλθ更长的波长侧 。 光纤的零色散波长DELTAθ被移位以将信号光明显地布置在透射频带中，以补偿光传输系统的色散量。
-
公开(公告)号：US08400702B2
公开(公告)日：2013-03-19
申请号：US12805065
申请日：2010-07-09
IPC分类号： G02B26/00
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5162 , H04B10/5167 , H04B10/5561
摘要： According to an aspect of an embodiment, an optical modulation device includes a Mach-Zehnder modulator and a controller. The Mach-Zehnder modulator is supplied a drive signal and a bias voltage. The Mach-Zehnder modulator modulates inputted light on the bases of the drive signal and the bias voltage. The drive signal selectively is superimposes a predetermined frequency signal. The bias voltage selectively is superimposes the predetermined frequency signal. The controller selects a superimposing target which is the drive signal or the bias voltage so as to change modulation formats.
摘要翻译： 根据实施例的一个方面，光调制装置包括马赫 - 曾德调制器和控制器。 马赫曾德尔调制器提供驱动信号和偏置电压。 Mach-Zehnder调制器根据驱动信号和偏置电压调制输入的光。 驱动信号选择性地叠加预定的频率信号。 选择性地将偏置电压叠加在预定频率信号上。 控制器选择作为驱动信号或偏置电压的叠加目标，以便改变调制格式。
-
公开(公告)号：US20080187324A1
公开(公告)日：2008-08-07
申请号：US12013857
申请日：2008-01-14
IPC分类号： H04B10/04
CPC分类号： H04B10/5053 , H04B10/50 , H04B10/50575
摘要： The disclosed optical transmitter and control method include performing phase modulation of a light propagating through a corresponding optical path in accordance with a data signal, supplying bias voltages for regulating an operating point of each of phase modulation performed, imparting a predetermined phase difference, supplying bias voltages for phase difference regulation and coupling lights output from the corresponding optical paths. The optical transmitter includes superimposing a pilot signal on either one of bias voltages where the pilot signal has a frequency lower than a frequency of a bit rate of the data signal, and performing a feedback control in accordance with a result of monitoring.
摘要翻译： 所公开的光发射机和控制方法包括根据数据信号执行通过对应的光路传播的光的相位调制，提供用于调节执行的每个相位调制的工作点的偏置电压，赋予预定的相位差，提供偏置 用于从相应光路输出的相位差调节和耦合光的电压。 光发射机包括将导频信号叠加在导频信号的频率低于数据信号的比特率的频率的偏置电压中的任一个上，并且根据监视的结果进行反馈控制。
-
公开(公告)号：US20080112710A1
公开(公告)日：2008-05-15
申请号：US11845251
申请日：2007-08-27
申请人： Toshiki TANAKA , Hideyuki Miyata
发明人： Toshiki TANAKA , Hideyuki Miyata
CPC分类号： G02F1/2255 , G02F1/0123 , G02F2001/212 , G02F2203/20 , H04B10/5561 , H04L27/205 , H04L27/2096
摘要： The present invention is a miniaturized differential M phase-shift modulator (M=2n: n is 2 or more) in which a plurality of Mach-Zehnder type light modulators each adapted to output a DPSK-modulated signal light by applying a driving voltage signal are arranged in parallel and that comprises a multiplexing waveguide adapted to output a DMPSK-modulated light by multiplexing outputs of the plurality of the Mach-Zehnder type light modulators, wherein a phase-shift voltage to produce a phase shift difference of substantially 2π/M for a plurality of the signal lights multiplexed by the multiplexing waveguide is applied to the plurality of the Mach-Zehnder type light modulators together with the driving voltage signal.
摘要翻译： 本发明是一种小型化差分M相移调制器（M = 2 n n = 2或更多），其中多个马赫 - 策德尔式光调制器适于输出DPSK调制 通过施加驱动电压信号的信号光并行布置，其包括多路复用波导，其适于通过复用多个马赫 - 策德尔型光调制器的输出来输出DMPSK调制的光，其中相移电压产生 对于由复用波导复用的多个信号光的大致2pi / M的相移差与驱动电压信号一起被施加到多个马赫 - 曾德尔型光调制器。
-
40.发明申请公开(公告)号：US20060189281A1
公开(公告)日：2006-08-24
申请号：US11143663
申请日：2005-06-03
CPC分类号： H04J14/02 , G02F1/116 , G02F1/125 , G02F2203/055
摘要： A method of wavelength selection control is disclosed. The method includes detecting reference RF frequencies by varying the frequency of a RF signal supplied to a reference acousto-optic tunable filter with the reference RF frequencies corresponding to reference wavelengths of reference signals input to the tunable filter, performing tracking to optimize the reference RF frequencies, calculating dependent RF frequencies corresponding to wavelengths of WDM transmission signals and recording the calculated dependent RF frequencies in a first register, repeating the above when a request of wavelength selection is not received, when a request of wavelength selection is received, selecting one of the dependent RF frequencies corresponding to the requested wavelength and recording the selected dependent RF frequency in a second register for use of an acousto-optic tunable filter at a port in operation, and generating and supplying a RF signal having the selected dependent RF frequency to the acousto-optic tunable filter.
摘要翻译： 公开了一种波长选择控制方法。 该方法包括通过改变提供给参考声光可调谐滤波器的RF信号的频率来检测参考RF频率，其中参考RF频率对应于输入到可调谐滤波器的参考信号的参考波长，执行跟踪以优化参考RF频率 计算对应于WDM传输信号的波长的相关RF频率，并将所计算的相关RF频率记录在第一寄存器中，当接收到波长选择的请求时，当接收到波长选择的请求时，重复上述步骤，选择波长选择中的一个 相应的RF频率对应于所请求的波长，并且将所选择的相关RF频率记录在第二寄存器中，以在运行的端口处使用声光可调谐滤波器，并且生成并提供具有所选择的相关RF频率的RF信号到声音 - 可调谐滤波器。
-
-
-
-
-
-
-
-
-
搜索结果
90 条记录 (耗时 0.032 秒)
