Bi-directional optical-amplifier module
    41.
    发明授权
    Bi-directional optical-amplifier module 失效
    双向光放大器模块

    公开(公告)号:US06894830B2

    公开(公告)日:2005-05-17

    申请号:US10054322

    申请日:2002-01-22

    CPC分类号: H04B10/297

    摘要: Disclosed is a bi-directional optical-amplifier module including first through fourth optical amplifiers, a mid-stage device for performing a desired signal processing for an upward or downward optical signal passing therethrough, a first optical-signal-path-setting device for supplying an optical signal inputted to a first input/output terminal of the bi-directional optical-amplifier module while outputting an optical signal outputted from the fourth optical amplifier to the first input/output terminal, a second optical-signal-path-setting device for supplying an optical signal inputted to a second input/output terminal of the bi-directional optical-amplifier module while outputting an optical signal outputted from the third optical amplifier to the second input/output terminal, a third optical-signal-path-setting device for outputting an optical signal outputted from the first optical amplifier to a first input/output terminal of the mid-stage device while supplying an optical signal outputted from the first input/output terminal of the mid-stage device to the fourth optical amplifier, and a fourth optical-signal-path-setting device for outputting an optical signal outputted from the second optical amplifier to a second input/output terminal of the mid-stage device while supplying an optical signal outputted from the second input/output terminal of the mid-stage device to the third optical amplifier.

    摘要翻译: 公开了一种双向光放大器模块,包括第一到第四光放大器,用于对通过其的向上或向下的光信号执行期望的信号处理的中级装置,用于供应的第一光信号路径设置装置 输出到所述双向光放大器模块的第一输入/输出端的光信号,同时将从所述第四光放大器输出的光信号输出到所述第一输入/输出端;第二光信号路径设置装置, 提供输入到双向光放大器模块的第二输入/输出端的光信号,同时将从第三光放大器输出的光信号输出到第二输入/输出端;第三光信号路径设定装置 用于在提供光信号的同时将从第一光放大器输出的光信号输出到中级装置的第一输入/输出端 从中段装置的第一输入/输出端子输出到第四光放大器;以及第四光信号路径设置装置,用于将从第二光放大器输出的光信号输出到第二输入/输出端 中间级装置,同时将从中级装置的第二输入/输出端子输出的光信号提供给第三光放大器。

    Optical signal transmission apparatus including reflective gain-clamped semiconductor optical amplifier
    42.
    发明申请
    Optical signal transmission apparatus including reflective gain-clamped semiconductor optical amplifier 有权
    光信号传输装置包括反射增益钳位半导体光放大器

    公开(公告)号:US20050088724A1

    公开(公告)日:2005-04-28

    申请号:US10847109

    申请日:2004-05-17

    摘要: Disclosed are optical signal transmission apparatus including a reflective gain-clamped semiconductor optical amplifier and optical communication system using the optical signal transmission apparatus, which can improve modulation speed and optical power by effectively suppressing intensity noise of an incoherent light source. The optical signal transmission apparatus comprises a light source; a reflective gain-clamped semiconductor optical amplifier to generate gain-clamped optical signals having a substantially constant output intensity in a gain saturation region; a wavelength division multiplexing apparatus configured to spectrum-slice light from the light source, provide the spectrum-sliced light to the reflective gain-clamped semiconductor optical amplifier, and multiplex optical signals gain-clamped by the reflective gain-clamped optical amplifier. and a circulator for inputting the light generated by the light source to the wavelength division multiplexing apparatus, and outputting the optical signal multiplexed by the wavelength division multiplexing apparatus to a transmission link.

    摘要翻译: 公开了包括使用光信号传输装置的反射增益钳位半导体光放大器和光通信系统的光信号传输装置,其可以通过有效地抑制非相干光源的强度噪声来提高调制速度和光功率。 光信号传输装置包括光源; 反射增益钳位半导体光放大器,用于产生在增益饱和区中具有基本上恒定的输出强度的增益钳位光信号; 波分多路复用装置,被配置为对来自光源的光进行光谱分片,将光谱切片光提供给反射增益钳位半导体光放大器,并且复用由反射增益钳位光放大器增益钳位的光信号。 以及循环器,用于将由光源产生的光输入到波分复用装置,并将由波分多路复用装置复用的光信号输出到传输链路。

    Wavelength-division-multiplexed passive optical network system using wavelength-seeded light source
    43.
    发明申请
    Wavelength-division-multiplexed passive optical network system using wavelength-seeded light source 审中-公开
    使用波长种子光源的波分复用无源光网络系统

    公开(公告)号:US20050074240A1

    公开(公告)日:2005-04-07

    申请号:US10778426

    申请日:2004-02-13

    摘要: An economical wavelength-division-multiplexed passive optical network (WDM-PON) system is realized by directly modulating a wavelength-seeded light source to transmit upstream or downstream data, without using an expensive external modulator. A multiplexed signal having the same wavelength as the waveguide grating is generated and used to control the temperature of the waveguide grating and adjust the wavelength of a wavelength-division-multiplexed signal routed to a transfer link. The wavelength selectivity and stabilization of each light source are not required. Since upstream and downstream signals can be multiplexed and demultiplexed concurrently by each waveguide grating located in the central office and the remote node, it is possible to reduce the number of waveguide gratings used in a WDM optical network. In addition, upstream and downstream signals can be transmitted concurrently using a single-strand transfer optical fiber, thereby realizing an economical and efficient WDM-PON.

    摘要翻译: 通过直接调制波长种子光源来传输上游或下游数据,实现了经济的波分复用无源光网络(WDM-PON)系统,而不需要昂贵的外部调制器。 产生具有与波导光栅相同波长的多路复用信号,并用于控制波导光栅的温度并调节路由到传输链路的波分复用信号的波长。 不需要每个光源的波长选择性和稳定性。 由于可以通过位于中心局和远程节点中的每个波导光栅同时复用和解复用上游和下行信号,所以可以减少在WDM光网络中使用的波导光栅的数量。 此外,可以使用单股传输光纤同时传输上行和下行信号,从而实现经济高效的WDM-PON。

    Multi-wavelength optical transmitter and bi-directional wavelength division multiplexing system using the same
    45.
    发明申请
    Multi-wavelength optical transmitter and bi-directional wavelength division multiplexing system using the same 审中-公开
    多波长光发射机和双向波分复用系统使用相同

    公开(公告)号:US20050041971A1

    公开(公告)日:2005-02-24

    申请号:US10792322

    申请日:2004-03-03

    摘要: A multi-wavelength optical transmitter which multiplexes a plurality of channels having different wavelengths into an optical signal for output includes lasers for generating mode-locked channels by corresponding incoherent light received in the lasers. The transmitter also has a semiconductor optical amplifier for amplifying, while in a gain saturation state, the optical signal multiplexed by the multiplexer/demultiplexer. Light from a broadband light source is directed by a circulator to the multiplexer/demultiplexer for demultiplexing among the lasers. Light back from the lasers is multiplexed and then directed by the circulator and amplified by a semiconductor optical amplifier for output external to the transmitter.

    摘要翻译: 将具有不同波长的多个信道多路复用到用于输出的光信号中的多波长光发射机包括用于通过在激光器中接收的相应非相干光产生锁模信道的激光器。 发射机还具有半导体光放大器,用于在增益饱和状态下放大由多路复用器/解复用器多路复用的光信号。 来自宽带光源的光由循环器引导到多路复用器/解复用器,用于激光器之间的解复用。 来自激光器的光反射被多路复用,然后由循环器引导并由半导体光放大器放大,以便在发射机外部输出。

    Wavelength-division-multiplexed passive optical network using multi-wavelength lasing source and reflective optical amplification means
    46.
    发明申请
    Wavelength-division-multiplexed passive optical network using multi-wavelength lasing source and reflective optical amplification means 审中-公开
    波分复用无源光网络采用多波长激光源和反射光放大手段

    公开(公告)号:US20050025484A1

    公开(公告)日:2005-02-03

    申请号:US10781006

    申请日:2004-02-18

    摘要: A wavelength-division-multiplexed passive optical network using an economical multi-wavelength lasing source and a reflective optical amplification device is disclosed. The wavelength-division-multiplexed passive optical network includes a central office in which a multi-wavelength lasing source is located; a plurality of subscriber terminals for transmitting an upward signal by a refection signal of a multi-wavelength signal transmitted from the central office; and a local office, which is connected among the central office and the subscriber terminals through transmission optical fibers, for demultiplexing the multi-wavelength signal transmitted from the central office and transmitting the demultiplexed signal to the subscriber terminals, and for multiplexing signals inputted from each of the subscriber terminals and transmitting the multiplexed signals to the central office.

    摘要翻译: 公开了一种使用经济的多波长激光源和反射光放大装置的波分复用无源光网络。 波分复用无源光网络包括多波长激光源所在的中心局; 多个用户终端,用于通过从中心局发送的多波长信号的反射信号发送上行信号; 以及通过发送光纤连接在中心局和用户终端之间的本地办公室,用于对从中心局发送的多波长信号进行解复用,并将解复用的信号发送到用户终端,并且用于复用从每个 并将复用的信号发送到中心局。

    Automatic gain control device of optical fiber amplifier
    47.
    发明授权
    Automatic gain control device of optical fiber amplifier 失效
    光纤放大器自动增益控制装置

    公开(公告)号:US06580553B2

    公开(公告)日:2003-06-17

    申请号:US10046355

    申请日:2002-01-14

    IPC分类号: H01S300

    摘要: An automatic gain control device of an optical fiber amplifier that outputs a compensation signal to control a gain value of the optical fiber amplifier is disclosed. The device includes: a first optical detector for partially converting an input optical signal to the optical fiber amplifier into a first electrical signal; a second optical detector for partially converting an output optical signal from the optical fiber amplifier into a second electrical signal; a first programmable amplifier having a first gain value set based on a first control signal, the first programmable amplifier inputting the first electrical signal and amplifying it at the first gain value to output a first amplified signal; a second programmable amplifier having a second gain value set based on a second control signal, the second programmable amplifier inputting the second electrical signal and amplifying it at the second gain value to output a second amplified signal; a proportional-integral derivative (PID) for outputting the compensation signal, the compensation signal corresponding to the difference between the power level of the first amplified signal and the power level of the second electrical signal; and, a controller for outputting the second control signal to the second programmable amplifier such that it has the second gain value based on a third gain value and for varying the first gain value of the first programmable amplifier until the first electrical signal and second amplified signal become the same in power level, thereby changing the gain value of the optical fiber amplifier to the third gain value.

    摘要翻译: 公开了一种输出补偿信号以控制光纤放大器的增益值的光纤放大器的自动增益控制装置。 该装置包括:第一光学检测器,用于将输入光信号部分地转换成光纤放大器为第一电信号; 第二光学检测器,用于将来自光纤放大器的输出光信号部分地转换成第二电信号; 第一可编程放大器,具有基于第一控制信号设定的第一增益值,第一可编程放大器输入第一电信号并以第一增益值放大第一增益值,以输出第一放大信号; 第二可编程放大器,具有基于第二控制信号设定的第二增益值,第二可编程放大器输入第二电信号并以第二增益值放大第二增益值,以输出第二放大信号; 用于输出所述补偿信号的比例积分微分(PID),所述补偿信号对应于所述第一放大信号的功率电平与所述第二电信号的功率电平之差; 以及控制器,用于将第二控制信号输出到第二可编程放大器,使得其具有基于第三增益值的第二增益值,并且用于改变第一可编程放大器的第一增益值,直到第一电信号和第二放大信号 在功率电平上变得相同,从而将光纤放大器的增益值改变为第三增益值。

    Method and apparatus for recognizing characters
    48.
    发明授权
    Method and apparatus for recognizing characters 有权
    用于识别字符的方法和装置

    公开(公告)号:US08320681B2

    公开(公告)日:2012-11-27

    申请号:US12487378

    申请日:2009-06-18

    IPC分类号: G06K9/62

    摘要: Disclosed is a method and an apparatus for recognizing characters using an image. A camera is activated according to a character recognition request and a preview mode is set for displaying an image photographed through the camera in real time. An auto focus of the camera is controlled and an image having a predetermined level of clarity is obtained for character recognition from the images obtained in the preview mode. The image for character recognition is character-recognition-processed so as to extract recognition result data. A final recognition character row is drawn that excludes non-character data from the recognition result data. A first word is combined including at least one character of the final recognition character row and a predetermined maximum number of characters. A dictionary database that stores dictionary information on various languages using the first word is searched, so as to provide the user with the corresponding word.

    摘要翻译: 公开了一种使用图像识别字符的方法和装置。 根据字符识别请求激活相机,并且设置用于实时显示通过相机拍摄的图像的预览模式。 控制相机的自动对焦,并且从在预览模式中获得的图像中获得具有预定水平的清晰度的图像以进行字符识别。 用于字符识别的图像被字符识别处理,以便提取识别结果数据。 绘制从识别结果数据排除非字符数据的最终识别字符行。 组合第一个字,包括最终识别字符行的至少一个字符和预定的最大字符数。 搜索使用第一个单词存储各种语言的字典信息的词典数据库,以向用户提供对应的单词。

    Method and apparatus for guaranteeing quality of service in a residential ethernet system
    49.
    发明授权
    Method and apparatus for guaranteeing quality of service in a residential ethernet system 失效
    保证住宅以太网系统的服务质量的方法和装置

    公开(公告)号:US07715418B2

    公开(公告)日:2010-05-11

    申请号:US11891122

    申请日:2007-08-09

    IPC分类号: H04L12/56

    摘要: A method and apparatus for ensuring QoS in a synchronous Ethernet bridge are disclosed, in which a classifier classifies an ingress packet according to a PHB mapped to a DSCP value of the packet and provides the classified packet to one of a predetermined synchronous packet queue and a predetermined asynchronous packet queue, a buffer queue with a plurality of queues mapped to priority levels buffers the classified packet, a marker marks the buffered packet as a synchronous packet or, if the buffered packet is an asynchronous packet, marks the packet in a predetermined format corresponding to a priority level of the packet, and a synchronous Ethernet scheduler schedules the marked packet.

    摘要翻译: 公开了一种用于确保同步以太网中的QoS的方法和装置,其中分类器根据映射到分组的DSCP值的PHB对入口分组进行分类,并将分类分组提供给预定的同步分组队列和 预定的异步分组队列,具有映射到优先级的多个队列的缓冲器队列缓冲分类分组,标记将缓冲分组标记为同步分组,或者如果缓冲分组是异步分组,则以预定格式标记分组 对应于分组的优先级,并且同步以太网调度器调度所标记的分组。

    Apparatus and method for frequency-shift-keying optical transmission
    50.
    发明授权
    Apparatus and method for frequency-shift-keying optical transmission 失效
    用于频移键控光传输的装置和方法

    公开(公告)号:US07450860B2

    公开(公告)日:2008-11-11

    申请号:US11147705

    申请日:2005-06-08

    IPC分类号: H04B10/04 H04B10/12

    摘要: An optical transmission apparatus employing an FSK scheme is disclosed. The optical transmission apparatus includes a light generator arranged to generate a first tone signal having a first frequency and a second tone signal having a second frequency. The optical transmission apparatus also includes a light modulator including a second modulator for selectively outputting one of the first tone signal and the second tone signal input from the light generator according to input data.

    摘要翻译: 公开了一种采用FSK方案的光传输装置。 光传输装置包括发生器,其被配置为产生具有第一频率的第一音调信号和具有第二频率的第二音调信号。 光传输装置还包括光调制器,其包括第二调制器,用于根据输入数据选择性地输出从光发生器输入的第一音调信号和第二音调信号中的一个。