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公开(公告)号：US06238102B1
公开(公告)日：2001-05-29
申请号：US09198565
申请日：1998-11-23
IPC分类号： G02B636
CPC分类号： G02B6/3644 , G02B6/30 , G02B6/32 , G02B6/3652 , G02B6/3833 , G02B6/4206
摘要： A multiaxial optical coupler for use in a device using an LiNbO3 substrate, which is reliable over a wide temperature range and capable of reducing coupling loss. A capillary has a plurality of linear through holes formed therethrough in a manner each inclined with respect to the central axis of the capillary such that the extension line of the central axis of the linear through hole extends through the center of a lens. A plurality of optical fibers are inserted into the linear through holes, respectively. This construction enables the optical axis of an optical beam emitted from each of the optical fibers within the capillary to pass through the center of the lens and reach the end face of a corresponding one of the optical waveguides. Similarly, the construction enables the optical axis of an optical beam emitted from the end face of each of the optical waveguides on the substrate to pass through the center of the lens and reach a corresponding one of the optical fibers within the capillary. The central axis of each of the linear guide holes is slightly inclined with respect to the optical axis of the lens. However, this inclination angle causes very little optical coupling loss.
摘要翻译： 一种用于使用LiNbO 3衬底的器件的多轴光耦合器，其在宽的温度范围内是可靠的并且能够减少耦合损耗。 毛细管具有以相对于毛细管的中心轴线倾斜的方式形成的多个线状通孔，使得线状通孔的中心轴线的延伸线延伸穿过透镜的中心。 多根光纤分别插入线状通孔中。 这种结构使得从毛细管内的每个光纤发射的光束的光轴能够穿过透镜的中心并到达相应的一个光波导的端面。 类似地，该结构使得从基板上的每个光波导的端面发射的光束的光轴能够穿过透镜的中心并到达毛细管内的相应的一根光纤。 每个线性引导孔的中心轴相对于透镜的光轴稍微倾斜。 然而，该倾斜角度导致非常小的光耦合损耗。
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公开(公告)号：US6033126A
公开(公告)日：2000-03-07
申请号：US21372
申请日：1998-02-10
CPC分类号： G02F1/0356 , G02F1/2255 , G02F2001/212
摘要： An optical waveguide module including a metal package having a bottom surface formed with a chip insertion groove, and a waveguide chip inserted and fixed in the chip insertion groove. The waveguide chip has an optical waveguide formed on a substrate having an electro-optic effect. A signal electrode is formed on the optical waveguide, and a ground electrode is formed on the substrate. The ground electrode is connected to the metal package through first and second ribbons respectively located in the vicinity of first and second bent portions of the signal electrode.
摘要翻译： 一种光波导模块，包括具有形成有芯片插入槽的底面的金属封装和插入并固定在芯片插入槽中的波导芯片。 波导芯片具有形成在具有电光效应的基板上的光波导。 在光波导上形成信号电极，在基板上形成接地电极。 接地电极通过分别位于信号电极的第一和第二弯曲部分附近的第一和第二带连接到金属封装。
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公开(公告)号：US6046839A
公开(公告)日：2000-04-04
申请号：US216705
申请日：1998-12-21
CPC分类号： G02F1/125 , G02F2001/0139
摘要： An object of the invention is to provide a polarization scrambler wherein the polarization of linearly polarized signal light can be rotated to facilitate obtaining a minimum degree of polarization, and wherein scrambling operation is possible even if signal light of optional polarization states is input. Accordingly with the polarization scrambler, a polarization rotation section is provided on an input side on a chip on which is formed an optical waveguide, and a polarization scrambling section is provided on an output side. With the polarization rotation section, the polarization of linearly polarized signal light which is transmitted by the optical waveguide is rotated by means of an acousto-optic effect due to an elastic surface wave generated by an electrode, so as to become 45.degree. with respect to a vertical direction of the optical waveguide. With the polarization scrambling section, the polarization of the signal light from the polarization rotation section is scrambled in accordance with a modulation signal.
摘要翻译： 本发明的目的是提供一种偏振加扰器，其中线偏振信号光的极化可以旋转以便于获得最小的偏振度，并且即使输入了可选偏振状态的信号光也可以进行扰频操作。 因此，利用极化扰频器，在形成光波导的芯片的输入侧设置偏振旋转部，偏振加扰部设置在输出侧。 利用偏振旋转部分，由光波导传输的线偏振信号光的偏振由于由电极产生的弹性表面波而通过声光效应旋转，从而相对于 光波导的垂直方向。 利用偏振加扰部分，根据调制信号对来自偏振旋转部分的信号光的偏振进行加扰。
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4.发明授权Tunable dispersion compensation device, optical reception apparatus, and method for controlling tunable dispersion compensation 有权可调谐色散补偿装置，光接收装置和用于控制可调色散补偿的方法公开(公告)号：US09048955B2
公开(公告)日：2015-06-02
申请号：US13488736
申请日：2012-06-05
申请人： Toshihiro Ohtani
发明人： Toshihiro Ohtani
IPC分类号： H04B10/00 , H04B10/08 , H04B10/12 , H04B10/18 , H04B10/2513 , H04B10/2519 , H04B10/2525
CPC分类号： H04B10/25133 , H04B10/2513 , H04B10/2519 , H04B10/2525 , H04B2210/003
摘要： A tunable dispersion compensation device includes a plurality of tunable dispersion compensators coupled in series, a controller configured to control an amount of chromatic dispersion to be set in each of the plurality of tunable dispersion compensators, and a table including a correspondence relationship between an amount of chromatic dispersion and a wavelength band, for each of the plurality of tunable dispersion compensators, wherein the controller decides an amount of chromatic dispersion to be set in each of the plurality of tunable dispersion compensators, based on a total amount of chromatic dispersion desired for the plurality of tunable dispersion compensators and the correspondence relationship included in the table so that a difference between bandwidths of a first tunable dispersion compensator having the widest wavelength band and a second tunable dispersion compensator having the narrowest wavelength band, among the plurality of tunable dispersion compensators, is within a given range.
摘要翻译： 可调色散补偿装置包括串联耦合的多个可调谐色散补偿器，控制器被配置为控制要在多个可调色散补偿器中的每一个中设置的色散量，以及包括在 对于多个可调色散补偿器中的每一个，其中所述控制器基于所述多个可调色散补偿器所需的色散的总量来确定要设置在所述多个可调色散补偿器中的每一个中的色散量的色散和波长带 多个可调谐色散补偿器和包括在表中的对应关系，使得多个可调色散补偿器中具有最宽波段的第一可调色散补偿器的带宽与具有最窄波段的第二可调色散补偿器之间的差异， 是withi 在给定范围内。
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公开(公告)号：US08259390B2
公开(公告)日：2012-09-04
申请号：US12409054
申请日：2009-03-23
申请人： Ryuta Hoshi , Toshihiro Ohtani
发明人： Ryuta Hoshi , Toshihiro Ohtani
CPC分类号： H01S5/50 , H01S3/005 , H01S3/06754 , H01S3/06758 , H01S3/1305 , H01S3/2316 , H01S5/0683 , H04B10/296
摘要： An optical amplifier apparatus includes an optical amplifier including an amplification medium doped with an active substance, the amplification medium excited in order to amplify light; a semiconductor optical amplifier arranged after the optical amplifier; a driver for supplying a driving current with respect to the semiconductor optical amplifier in order that the semiconductor optical amplifier has an amplification characteristic with respect to an input light, the amplification characteristic including a gain non-saturated region and a gain saturated region; and an input-light level adjuster for adjusting an out put light of the optical amplifier to the input light level of the semiconductor optical amplifier, the input light level being set up between the gain non-saturated region and the gain saturated region.
摘要翻译： 一种光放大器装置，包括：光放大器，包括掺杂有活性物质的放大介质，所述放大介质被激发以放大光; 配置在光放大器之后的半导体光放大器; 用于向半导体光放大器提供驱动电流的驱动器，以使得半导体光放大器具有相对于输入光的放大特性，该放大特性包括增益非饱和区和增益饱和区; 以及输入光电平调整器，用于将所述光放大器的输出光调整到所述半导体光放大器的输入光电平，所述输入光电平建立在所述增益不饱和区域和所述增益饱和区域之间。
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公开(公告)号：US07813647B2
公开(公告)日：2010-10-12
申请号：US11987900
申请日：2007-12-05
申请人： Toshihiro Ohtani
发明人： Toshihiro Ohtani
IPC分类号： H04B10/12
CPC分类号： H04B10/25133
摘要： A chromatic dispersion compensation control method for compensating the chromatic dispersion of an optical transmission path with a variable dispersion compensator inserted in the optical transmission path is disclosed. The method includes a transmitter inserting a fixed data sequence in the rewritable area of a transmission data sequence to be transmitted and transmitting the transmission data sequence to the optical transmission path, the fixed data sequence containing alternating 0-1 data formed of alternating 0s and 1s and alternating 0 series-1 series data formed of alternating series of 0s and 1s; and a receiver determining a direction to increase or decrease the dispersion compensation of the variable dispersion compensator based on the number of error occurrences in the alternating 0-1 data and the number of error occurrences in the alternating 0 series-1 series data, and variably controlling the dispersion compensation of the variable dispersion compensator in accordance with the determined direction.
摘要翻译： 公开了一种色散补偿控制方法，用于通过插入在光传输路径中的可变色散补偿器来补偿光传输路径的色散。 该方法包括：发送器将固定数据序列插入到要发送的发送数据序列的可重写区域中，并将发送数据序列发送到光传输路径，该固定数据序列包含由0和1交替形成的交替0-1数据 交替的0s和1s系列交替出现0系列串联数据; 以及接收机，基于交替的0-1数据中的错误发生次数和交替的0系列-1系列数据中的出错次数，确定可变色散补偿器的色散补偿的增加或减小的方向，并且可变地 根据确定的方向控制可变色散补偿器的色散补偿。
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7.发明授权公开(公告)号：US07324189B2
公开(公告)日：2008-01-29
申请号：US11277559
申请日：2006-03-27
申请人： Toshihiro Ohtani
发明人： Toshihiro Ohtani
IPC分类号： G01N21/00
CPC分类号： H04B10/2537 , H04B10/0775 , H04B10/0777
摘要： The present invention provides provide a light power adjusting method, an optical transmitter, and an optical receiver suitable for ensuring high data transmission quality by preventing the rapid increase in SBS which occurs when the light power exceeds a predetermined value.The incident light power with which the SBS-induced backward propagating light included in the reflected light returned from the optical transmission line rapidly increases, i.e., the light power threshold is calculated.By setting the power of the light incident on the optical transmission line at a value equal to or smaller than the thus calculated light power threshold, the rapid increase in the SBS-induced backward propagating light, which is a nonlinear phenomenon of the optical fiber, is prevented.
摘要翻译： 本发明提供了一种光功率调节方法，光发射机和光接收机，其适用于通过防止当光功率超过预定值时发生的SBS的快速增加来确保高数据传输质量。 由光传输线返回的反射光中包含的SBS引起的反向传播光的入射光功率快速增加，即计算光功率阈值。 通过将入射到光传输线上的光的功率设定为等于或小于由此计算出的光功率阈值的值，作为光纤的非线性现象的SBS感应的反向传播光的快速增加， 被阻止
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公开(公告)号：US07251072B2
公开(公告)日：2007-07-31
申请号：US10635723
申请日：2003-08-07
IPC分类号： H04B10/17
CPC分类号： H04B10/2937 , H01S3/302 , H04B10/0775 , H04B10/2916 , H04B2210/078 , H04B2210/08
摘要： A reliable optical transmission system with an improved signal control mechanism that avoids abrupt power variations of light beams, thereby preventing optical supervisory channel (OSC) signals from experiencing errors. An optical amplifier amplifies main signals under the control of an optical amplifier controller, which spends a first predetermined time to raise the output power of the optical amplifier up to a desired level. A pump light source produces a pump beam for injection to a fiber-optic transmission line so as to make it serve as an amplifying medium. The pump light source is controlled by a pump light source controller that spends a second predetermined time to raise the pump beam to a desired power level. This stepwise start-up process of the amplifier power and pump beam power prevents OSC signals from experiencing abrupt power variations.
摘要翻译： 一种具有改进的信号控制机制的可靠的光传输系统，其避免了光束的突然功率变化，从而防止光监控信道（OSC）信号经历错误。 光放大器在光放大器控制器的控制下放大主信号，光放大器控制器花费第一预定时间将光放大器的输出功率提高到期望的水平。 泵浦光源产生用于注射到光纤传输线的泵浦光束，以使其用作放大介质。 泵浦光源由泵浦光源控制器控制，泵控制器花费第二预定时间将泵浦光束升高到期望的功率水平。 放大器功率和泵浦波束功率的逐步启动过程防止OSC信号经历突然的功率变化。
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9.发明授权公开(公告)号：US08326160B2
公开(公告)日：2012-12-04
申请号：US12951643
申请日：2010-11-22
申请人： Makoto Murakami , Toshihiro Ohtani
发明人： Makoto Murakami , Toshihiro Ohtani
CPC分类号： H04B10/25133 , H04B2210/252
摘要： A dispersion compensation device includes: an optical branching unit to branch an optical signal to be received; a first dispersion compensator to perform dispersion compensation on one part of the optical signal branched by the optical branching unit with a variable compensation amount; a second dispersion compensator to perform dispersion compensation on another part of the optical signal branched by the optical branching unit; a monitoring unit to monitor the communication quality of an output optical signal of the second dispersion compensator; and a controlling unit to determine the direction of variation in chromatic dispersion of the optical signal based on the direction of variation in communication quality monitored by the monitoring unit and control the compensation amount of the first dispersion compensator based on the result of the determination.
摘要翻译： 色散补偿装置包括：光分支单元，用于分支待接收的光信号; 第一色散补偿器，对具有可变补偿量的光分支单元分支的光信号的一部分进行色散补偿; 第二色散补偿器，对由光分支单元分支的光信号的另一部分进行色散补偿; 监视单元，用于监视第二色散补偿器的输出光信号的通信质量; 以及控制单元，其基于由所述监视单元监视的通信质量的变化方向来确定所述光信号的色散的变化方向，并且基于所述确定的结果来控制所述第一色散补偿器的补偿量。
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公开(公告)号：US08131159B2
公开(公告)日：2012-03-06
申请号：US12457051
申请日：2009-05-29
申请人： Toshihiro Ohtani
发明人： Toshihiro Ohtani
IPC分类号： H04B10/04
CPC分类号： H04B10/2942
摘要： In a transmission apparatus, a monitor unit monitors a signal level and generates a monitored value; a level control unit controls the level of the input signal in accordance with the monitored value; an output amplification unit amplifies and outputs the level-controlled signal; and a control unit controls unit operation statuses in accordance with setting information. The control unit recognizes the period of duration of a single level in the input signal, from the signal format given by the setting information, and performs variable control of at least one of a monitor time constant, a response time from the signal input to the monitor unit until the generation of the monitored value, and a level setting time constant, a response time from the input of the monitored value to the level control unit until the execution of level control, in accordance with the period of duration of the single level.
摘要翻译： 在发送装置中，监视单元监视信号电平并产生监视值; 电平控制单元根据监视值控制输入信号的电平; 输出放大单元放大并输出电平控制信号; 并且控制单元根据设置信息控制单元操作状态。 控制单元根据由设定信息给出的信号格式来识别输入信号中的单个电平的持续时间，并且执行监视时间常数，从输入信号到信号的响应时间中的至少一个的可变控制 监视单元，直到监视值的产生，以及电平设定时间常数，从监视值的输入到电平控制单元的响应时间，直到执行电平控制，根据单级持续时间 。
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