-
21.发明授权Optical transmitter, optical receiver and optical transmission apparatus and control method of optical receiver 失效光发射机，光接收机和光传输装置及光接收机的控制方法
公开(公告)号：US5023950A
公开(公告)日：1991-06-11
申请号：US298946
申请日：1989-01-19
申请人： Hideaki Tsushima , Shinya Sasaki
发明人： Hideaki Tsushima , Shinya Sasaki
IPC分类号： G02F2/00 , H01S5/06 , H04B10/07 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/548 , H04B10/60 , H04B10/61 , H04B10/64 , H04L25/49 , H04L27/10
CPC分类号： H04L25/4925 , H04B10/614 , H04L27/10
摘要： A unipolar original electrical signal is encoded by alternate mark inversion and combined with a DC bias current for injection of a semiconductor laser to produce a bipolar FSK optical signal that is transmitted to a receiver. At the receiver, the received signal is coupled with optical local power and fed to an optical/electrical transducer, preferably a semiconductor, to produce an electrical signal that is demodulated to produce the original unipolar signal. The demodulator may be of different types, for example employing delaying part of the amplified electrical signal and mixing the delayed part with the original signal for passage of the combined signal through a low pass filter; with proper selection of the delay, an AMI decoder is not needed. The demodulator may also be of the type that has one or more band pass filters to respectively separate the positive mark, space and negative mark signals that may thereafter be added. Filtering and polarization beam splitting may also be used in the demodulator for improving the signal-to-noise ratio and preventing other types of degradation.
-
公开(公告)号：US08712255B2
公开(公告)日：2014-04-29
申请号：US13113591
申请日：2011-05-23
CPC分类号： H04B10/25133
摘要： It is provided an optical receiver comprising a compensator, a compensation controller and a clock extractor. The optical receiver selects first and second values, and obtains a stabilization time necessary to change the dispersion value and a transition time shorter than the stabilization time, compensates the received optical signal using the selected first value, changes the dispersion value from the first value into the second value, compensates the received optical signal using the dispersion value when the transition time has passed since starting to change the dispersion value, creates second extraction information of the dispersion value after the transition time, compensates for dispersion of the optical signal using an dispersion value calculated based on the second value and the difference between the dispersion value after the transition time and the second value in a case where the created second extraction information indicates that the clock extraction is available.
摘要翻译： 提供了一种光接收器，包括补偿器，补偿控制器和时钟提取器。 光接收机选择第一值和第二值，并获得改变色散值和比稳定时间短的转换时间所需的稳定时间，使用所选择的第一值补偿接收到的光信号，将色散值从第一值改变为 第二值，由于从开始改变色散值开始经过转换时间之后，利用色散值补偿接收到的光信号，在转换时间之后产生色散值的第二提取信息，使用色散补偿光信号的色散 在创建的第二提取信息表示时钟提取可用的情况下，基于第二值计算的值和转换时间之后的色散值与第二值之间的差值。
-
公开(公告)号：US06463191B1
公开(公告)日：2002-10-08
申请号：US09619195
申请日：2000-07-19
申请人： Hideaki Tsushima , Masahiro Ojima , Masaya Horino , Kazutaka Sato
发明人： Hideaki Tsushima , Masahiro Ojima , Masaya Horino , Kazutaka Sato
IPC分类号： G02B626
CPC分类号： G02B6/3588 , G02B6/3502 , G02B6/355 , G02B6/3572 , H04J14/0297 , H04Q11/0005 , H04Q2011/0026 , H04Q2011/0039 , H04Q2011/0069 , H04Q2011/0081 , H04Q2011/0083
摘要： A light emitted from the supervisory light source is supplied to the input port of any one of a plurality of switching sections provided in the optical switching device. A light emitted from the output port of the switching section is converted into electric signals and then compared with the threshold value by a supervisory receiver. The supervisory control circuit discriminates the state of connection at each switching section in the optical switching device according to the compared result obtained by the supervisory receiver, whereby each switching section in the optical switching device is supervised.
摘要翻译： 从监控光源发射的光被提供给设置在光开关装置中的多个切换部分中的任一个的输入端口。 从开关部分的输出端口发射的光被转换成电信号，然后通过监控接收器与阈值进行比较。 监控控制电路根据由监控接收机获得的比较结果来识别光开关装置中每个切换部分处的连接状态，由此监视光开关装置中的每个切换部分。
-
公开(公告)号：US5864414A
公开(公告)日：1999-01-26
申请号：US686962
申请日：1996-07-26
CPC分类号： H04J14/0297 , H04J14/0227 , H04J14/0232 , H04J14/0241 , H04J14/028 , H04J14/0282 , H04J14/0283 , H04J14/08 , H04Q11/0005 , H04J14/0212 , H04J14/0291 , H04J14/0295 , H04J14/083 , H04Q2011/0011 , H04Q2011/0015 , H04Q2011/002 , H04Q2011/0041 , H04Q2011/0043 , H04Q2011/0092
摘要： A wavelength division multiplex communication system comprises a head station (2) and a plurality of terminal stations (1) interconnected by an optical fibre cable (3). The head station (2) transmits continuous wave modulated wavelengths (.lambda..sub.1 -.lambda..sub.k), and a signalling wavelength (.lambda..sub.0) which is used to indicate, in each time slot, which wavelengths in the following time slot are available for transmission. Each terminal station (1) is arranged to receive the signalling wavelength, to determine therefrom whether the next time slot contains any data packets for that terminal station and, if so, to receive the packets. The terminal station (1) is arranged, if it has a data packet to transmit, to determine from the signalling wavelength whether the next time slot already contains data packets for the destination station and, if so, to avoid data collision by not transmitting its own data packet. The terminal station (1) then determines a free wavelength (.lambda..sub.q) from the signalling wavelength (.lambda..sub.0), modulates the free wavelength with the data packet it is to transmit, and modifies the signalling wavelength.
摘要翻译： 一种波分复用通信系统，包括由光纤电缆（3）互连的头站（2）和多个终端站（1）。 头站（2）发射连续波调制波长（λ1-λk）和信号波长（λ0），其用于在每个时隙中指示下一时隙中哪些波长可用于传输。 每个终端站（1）被布置成接收信令波长，从而确定下一个时隙是否包含用于该终端站的任何数据分组，如果是，则接收该分组。 如果终端站（1）具有要发送的数据分组，则从信令波长确定下一个时隙是否已经包含用于目的站的数据分组，如果是，则通过不发送其数据分组来避免数据冲突 自己的数据包。 终端站（1）然后从信令波长（λ0）确定自由波长（λq），利用要发送的数据分组调制自由波长，并修改信令波长。
-
25.发明授权Optical switching equipment, optical transport network, and methods of using them 失效光交换设备，光传输网络及其使用方法公开(公告)号：US06970614B2
公开(公告)日：2005-11-29
申请号：US10082135
申请日：2002-02-26
IPC分类号： H04B10/27 , H04B10/032 , H04B10/07 , H04B10/291 , H04J14/02 , H04M3/00 , H04Q3/52 , H04Q11/00 , G02B6/35 , G02B6/28
CPC分类号： H04J14/0297 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04J14/022 , H04J14/0227 , H04J14/0241 , H04J14/0283 , H04J14/0286 , H04J14/0295 , H04Q11/0005 , H04Q11/0062 , H04Q2011/0081
摘要： The optical switching equipment is basically configured as a single configuration without protection as a basic unit and to split the optical signal into one signal passing through the equipment and the other signal to be added and dropped in the equipment and execute the adding and dropping process in a redundant portion. The optical transport network is configured to locate a plurality of optical switching equipments and optical transmission routes so as to allow the optical signals processed in the equipment for adding the optical signals to pass through the different optical transmission routes and equipments respectively. The optical signal allowed to pass through the equipment is processed in the single configuration portion of the equipment. The setting of the routes of the optical switching equipment and the optical transmission route makes it possible for the overall optical transport network to transmit the redundant optical signal.
摘要翻译： 光交换设备基本上被配置为没有保护的单一配置作为基本单元，并将光信号分解成通过设备的一个信号，并将另外的信号分配到设备中并执行加法和删除处理 冗余部分。 光传输网络被配置为定位多个光交换设备和光传输路由，以允许在设备中处理的光信号分别添加到不同的光传输路由和设备中。 允许通过设备的光学信号在设备的单个配置部分中进行处理。 光交换设备的路由和光传输路由的设置使得整个光传输网络能够发送冗余光信号。
-
公开(公告)号：US06577784B2
公开(公告)日：2003-06-10
申请号：US09828980
申请日：2001-04-10
IPC分类号： G02B626
CPC分类号： G02B6/3508 , G02B6/3572 , G02B6/358 , G02B6/3582
摘要： In order to provide a small-sized and compact optical switch of 1×4 type. Two movable optical fibers are fixed on a substrate by a fixing block disposed in a middle portion of the fibers. Two movable blocks made of a soft magnetic body are mounted to the both ends of the movable optical fibers. Two soft magnetic fixing blocks are arranged on the substrate for fixing one optical fiber so as to oppose to one of the movable block, and for fixing four optical fibers so as to oppose to the movable block, respectively. Two movable blocks can be independently moved with respect to the respective fixing blocks by means of actuators. Further, it is possible to detect a position of each movable block with respect to the fixing block by means of detecting electrodes.
摘要翻译： 为了提供1x4型小型紧凑型光开关。 两个可移动光纤通过设置在纤维的中间部分中的固定块固定在基板上。 由可动光纤的两端安装由软磁体构成的两个可动块。 两个软磁性固定块被布置在基板上，用于固定一根光纤，以便与可移动块中的一个相对，并分别固定四根光纤以便与可动块相对。 两个可移动块可以通过致动器相对于相应的固定块独立地移动。 此外，可以通过检测电极来检测每个可移动块相对于固定块的位置。
-
公开(公告)号：US06229932B1
公开(公告)日：2001-05-08
申请号：US09182441
申请日：1998-10-30
IPC分类号： G02B635
CPC分类号： H04Q11/0005 , G02B6/357 , G02B6/358 , G02F1/0121 , H04Q2011/0039 , H04Q2011/0049 , H04Q2011/0083
摘要： An optical signal switching apparatus that maintains an optical switch to a specified state even when noise is generated during the turning on and/or off of power to an optical switch control unit which controls the optical switch. The optical switch control unit includes an optical switch driving unit, a power supply and a power supply surveillance unit. When a specified condition of the power supply is not satisfied, a control signal is generated by the power supply surveillance unit. Upon detection of the control signal the optical switch driving unit, fixes the state of the optical switch to a previously set state without regard to the input to the optical switch driving unit.
-
公开(公告)号：US4966384A
公开(公告)日：1990-10-30
申请号：US346463
申请日：1989-05-02
申请人： Terumasa Endo , Hiroshi Naruse , Hideo Nagaya , Hideaki Tsushima , Isamu Koyama , Yoji Matsumoto
发明人： Terumasa Endo , Hiroshi Naruse , Hideo Nagaya , Hideaki Tsushima , Isamu Koyama , Yoji Matsumoto
摘要： A suspension member mounting structure for mounting on a vehicle body a suspension member, with which left and right suspension arms each supporting a wheel are connected, through a front cushion group and a rear cushion group. The front cushion group has two cushion mounts attached to two positions of the suspension member in front of a rotary axis of the wheels and the rear cushion group has two cushion mounts attached to two positions of the suspension member behind the rotary axis of the wheels. Each cushion mount of the front cushion group is disposed to have a hole first, through which a bolt extends, extending vertically of the vehicle body and each cushion mount of the rear cushion group is disposed to have a second hole, through which a bolt extends, extending longitudinally of the vehicle body.
摘要翻译： 一种用于在车身上安装悬挂构件的悬挂构件安装结构，悬架构件通过前缓冲组和后缓冲组连接，左和右悬架臂各自支撑轮。 前缓冲组具有两个缓冲安装座，其安装在悬挂构件的两个位置，在轮的旋转轴线前面，后缓冲组具有两个缓冲安装座，其安装在车轮旋转轴线后面的悬挂构件的两个位置上。 前缓冲组的每个缓冲支架设置成具有第一孔，螺栓延伸穿过该孔，车身垂直延伸，后缓冲组的每个缓冲垫安置成具有第二孔，螺栓延伸穿过该第二孔 ，延伸到车身纵向。
-
公开(公告)号：US20110293270A1
公开(公告)日：2011-12-01
申请号：US13113591
申请日：2011-05-23
CPC分类号： H04B10/25133
摘要： It is provided an optical receiver comprising a compensator, a compensation controller and a clock extractor. The optical receiver selects first and second values, and obtains a stabilization time necessary to change the dispersion value and a transition time shorter than the stabilization time, compensates the received optical signal using the selected first value, changes the dispersion value from the first value into the second value, compensates the received optical signal using the dispersion value when the transition time has passed since starting to change the dispersion value, creates second extraction information of the dispersion value after the transition time, compensates for dispersion of the optical signal using an dispersion value calculated based on the second value and the difference between the dispersion value after the transition time and the second value in a case where the created second extraction information indicates that the clock extraction is available.
摘要翻译： 提供了一种光接收器，包括补偿器，补偿控制器和时钟提取器。 光接收机选择第一值和第二值，并获得改变色散值和比稳定时间短的转换时间所需的稳定时间，使用所选择的第一值补偿接收到的光信号，将色散值从第一值改变为 第二值，由于从开始改变色散值开始经过转换时间之后，利用色散值补偿接收到的光信号，在转换时间之后产生色散值的第二提取信息，使用色散补偿光信号的色散 在创建的第二提取信息表示时钟提取可用的情况下，基于第二值计算的值和转换时间之后的色散值与第二值之间的差值。
-
公开(公告)号：US06434286B1
公开(公告)日：2002-08-13
申请号：US09772083
申请日：2001-01-30
IPC分类号： G02B626
摘要： Variable (coupling ratio) optical couplers 3-0 and 6-0 each have ports of two inputs and two outputs, and the coupling ratio of inputted light is variably controlled by drive circuits 4-1 and 7-1. In the optical 1+1 switching structure, the coupling ratio of the variable (coupling ratio) optical coupler 3-0 is controlled to be 50%:50%. The variable (coupling ratio) optical coupler 6-0 is controlled to have the coupling ratio of 100%:0% or 0%:100%. In the optical 1:1 switching structure, the coupling ratios of the variable (coupling ratio) optical couplers 3-0 and 6-0 are controlled to be 100%:0% or 0%:100%. When a performance monitor (0) 9-0 detects signal degradation, signal interruption, and the like, the system controller 1-0 sends an instruction signal and the control circuits 20-0 and 21-0 output control signals for controlling coupling ratios of the variable (coupling ratio) optical couplers 3-0 and 6-0, respectively.
-
-
-
-
-
-
-
-
-
搜索结果
40 条记录 (耗时 0.026 秒)
