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    • 1. 发明授权
    • Monitoring system for optical transmission line repeaters
    • 光传输线路中继器监控系统
    • US4278850A
    • 1981-07-14
    • US28312
    • 1979-04-09
    • Masanori SatoYasuhiko NiiroHiroharu Wakabayashi
    • Masanori SatoYasuhiko NiiroHiroharu Wakabayashi
    • H04B10/00H04B10/02H04B10/077H04B10/08H04B10/16H04B10/29H04B3/46
    • H04B10/0777H04B10/29H04B2210/072
    • The error rate and the operation of repeaters inserted in an optical transmission line are monitored at the terminal station on land by transmitting the test signal and monitoring the response signal of repeaters through the optical data transmission line without utilizing interstitial copper pair. Each repeater has the particular identification code, and the transmission terminal transmits the test code having the repeater identification code and an acknowledgement block with an empty bit position on the time divisional basis with the data to be transmitted. The repeater which finds his identification code in the test code, inserts the response in the acknowledgement block, and repeats the signal including both said test code and the data to be transmitted. The reception terminal analyzes the response signal of each repeater to determine the error rate of each repeaters.
    • 通过发送测试信号并通过光数据传输线监视中继器的响应信号,而不使用间隙铜对,在陆上的终端站监视插入在光传输线路中的中继器的错误率和操作。 每个中继器具有特定的识别码,并且发送终端以具有中继器识别码的测试码和具有时间分割的空比特位置的确认块与要发送的数据进行发送。 在测试代​​码中找到他的识别码的中继器将响应插入到确认块中,并重复包括所述测试码和要发送的数据的信号。 接收终端分析每个中继器的响应信号,以确定每个中继器的错误率。
    • 2. 发明授权
    • Monitoring system of an optical power in an optical repeater
    • 光中继器光功率监控系统
    • US4313224A
    • 1982-01-26
    • US146687
    • 1980-05-05
    • Hiroharu WakabayashiYasuhiko Niiro
    • Hiroharu WakabayashiYasuhiko Niiro
    • G01M11/00H04B10/00H04B10/035H04B10/07H04B10/077H04B10/079H04B10/29H04B17/00H04B9/00
    • H04B10/2918H04B10/077H04B10/07955
    • The operation of a laser in an optical repeater in an optical transmission system using an optical fiber cable is telemonitored at a terminal station by changing the mark ratio of the test signal which is transmitted from the terminal station to the circuit. Each of the repeaters has an optical-electrical conversion element for the conversion of the input optical energy to electrical energy, an amplifier for amplifying the electrical output of said conversion element, a laser for converting the electrical output of the amplifier to an optical output power, a device for controlling the optical output power of the laser, a switch for providing the signal return path between the upward circuit and the downward circuit, and a monitoring circuit having a reference voltage generator for providing a reference lever which is lower than the normal signal level when the signal has the mark ratio of 1/2, and a comparator for comparing the laser output with the reference level, and a device for turning OFF the switch when the monitoring circuit provides the output signal indicating that the laser output is equal to the reference level. The terminal station designates the particular repeater and closes the switch of the designated repeater, then, transmits the test signal having the controlled mark ratio. That test signal returns to the terminal station reflected by that closed switch. By adjusting the mark ratio of the test signal, the monitoring circuit of the repeater provides the output when the laser output equals to the reference level, and has the switch turned OFF. Thus, the terminal station recognizes the degree of the degration of the laser from the mark ratio when the circuit is broken.
    • 使用光纤电缆的光传输系统中的光中继器中的激光器的操作通过改变从终端发送到电路的测试信号的标记比在终端进行远程监控。 每个中继器具有用于将输入光能转换为电能的光电转换元件,用于放大所述转换元件的电输出的放大器,用于将放大器的电输出转换为光输出功率的激光器 ,用于控制激光器的光输出功率的装置,用于在向上电路和向下电路之间提供信号返回路径的开关,以及具有用于提供低于正常电压的参考电压的参考电压发生器的监视电路 当信号具有1/2的标记比率的信号电平和用于将激光输出与基准电平进行比较的比较器以及当监视电路提供表示激光输出相等的输出信号时关闭开关的装置 到参考水平。 终端指定特定中继器并关闭指定中继器的开关,然后发送具有受控标记比率的测试信号。 该测试信号返回由该闭合开关反射的终端站。 通过调整测试信号的标记比例,当激光输出等于参考电平时,中继器的监视电路提供输出,并将开关置于OFF状态。 因此,当电路断开时,终端从识别率识别出激光的衰减程度。
    • 4. 发明授权
    • Light dispersion measuring apparatus
    • 光分散测量装置
    • US4411520A
    • 1983-10-25
    • US222973
    • 1981-01-07
    • Kiyofumi MochizukiHiroharu WakabayashiYasuhiko Niiro
    • Kiyofumi MochizukiHiroharu WakabayashiYasuhiko Niiro
    • G01J3/28G01J7/00G01M11/02G01N21/41G01N21/00
    • G01N21/412G01J7/00
    • A light dispersion measuring apparatus, provided with a light source for generating reference light pulses of short duration and of a constant frequency and also variable-frequency light pulses in synchronization with the reference light pulses but at a frequency different therefrom. A variable optical delay line delays the reference light pulses. An optical transmission medium, to be detected and to which the variable-frequency light pulses are applied is provided. An optical non-linear effect element receiver the output light pulses from the variable optical delay line and the optical transmission medium and is disposed so that when the two light pulses coincide emitted from the light source with each other, the sum component of the frequencies of the two types of light pulses produces a maximum output. A photo detector detects the sum component. Light dispersion in the optical transmission medium being measured from the delay of the variable optical delay line is adjusted so that the sum components yields a maximum output with respect to the frequency of the variable-frequency light pulses. The frequency of the reference light pulses can be made to be equal to the variable-frequency of the variable-frequency light pulses.
    • 一种光分散测量装置,设置有用于产生短持续时间的参考光脉冲和恒定频率以及与参考光脉冲同步但与其不同的频率的可变频光脉冲的光源。 可变光延迟线延迟参考光脉冲。 提供待检测并且施加可变频光脉冲的光传输介质。 光学非线性效应元件接收来自可变光学延迟线和光学传输介质的输出光脉冲,并且被布置成使得当两个光脉冲从光源发射相互重合时,频率的和分量 两种类型的光脉冲产生最大输出。 光电检测器检测和分量。 调整从可变光学延迟线的延迟测量的光传输介质中的光散射,使得和分量相对于可变频率光脉冲的频率产生最大输出。 可以使参考光脉冲的频率等于可变频率光脉冲的可变频率。
    • 5. 发明授权
    • System for measuring an optical loss in a single mode optical fiber
    • 用于测量单模光纤中光损耗的系统
    • US4304489A
    • 1981-12-08
    • US144863
    • 1980-04-29
    • Hiroharu WakabayashiYasuhiko Niiro
    • Hiroharu WakabayashiYasuhiko Niiro
    • G01M11/02G01M11/00G01N21/84
    • G01M11/33G01M11/00
    • An optical loss in a single mode optical device is measured by utilizing multi-mode equipment. The present system comprises of an optical source (1), a sample (30) to be tested, a reference optical attenuator (31) for replacing the optical loss in the sample (30), a first optical switch (40) provided between the optical source (1) and the sample (30) through a single mode optical fiber, a second optical switch (41) provided between the sample (30) and the light receiver (2) through the multi-mode optical fiber, said reference optical attenuator (31) being provided between the first optical switch (40) and the second optical switch (41) so that the optical path is switched either to the sample (30) or to the reference attenuator (31), the optical fiber between the sample (30) and the second optical switch (41) and the optical fiber connected to the input and the output of the reference attenuator (31) being a multi-mode optical fiber.
    • 通过利用多模式设备测量单模光学装置中的光损耗。 本系统包括光源(1),待测试样品(30),用于替换样品(30)中的光损耗的参考光衰减器(31),设置在样品(30)之间的第一光开关 通过单模光纤的光源(1)和样品(30),通过多模光纤设置在样品(30)和光接收器(2)之间的第二光开关(41),所述参考光 衰减器(31)设置在第一光开关(40)和第二光开关(41)之间,使得光路切换到采样(30)或参考衰减器(31),光纤 样品(30)和第二光开关(41),连接到参考衰减器(31)的输入和输出的光纤是多模光纤。
    • 6. 发明授权
    • Optical repeater monitoring system
    • 光中继器监控系统
    • US4710976A
    • 1987-12-01
    • US731642
    • 1985-05-07
    • Hiroharu WakabayashiYasuhiko Niiro
    • Hiroharu WakabayashiYasuhiko Niiro
    • H04B10/00H04B10/07H04B10/077H04B10/079H04B10/29H04B10/524H04B10/556H04B17/40H04L1/00H04L25/02H04B9/00
    • H04L1/0063H04B17/405
    • An optical repeater for an optical digital transmission line has a pair of in-service monitoring circuits (55, 55') each of which includes a flip-flop (57) for dividing frequency of transmission data to derive commands and burst carrier in the first line (54). A counting means (59, 61) is provided for detecting parity errors and counting the errors in an opposite second line (65). A timing generation means (62) is provided for reading out the counting means (61) upon receipt of the burst carrier. A phase modulator (64) provides phase modulation to a clock pulse in an opposite second line (65) according to the output of the timing generation means (62). The number of errors in the second line (65) is stored in the counting means (61) according to commands in a first line (54) from a terminal transmitter (52). The content of the counting means (61) is forwarded to a terminal receiver (66) through phase modulation of clock pulses in a second line (65) upon receipt of the burst carrier. The commands and burst carrier are constituted by arranging parity bits of in-service data in the first line (54).
    • 一种用于光数字传输线的光中继器具有一对在用监视电路(55,55'),每一个都包括用于分配传输数据的频率的触发器(57),以在第一 线(54)。 提供计数装置(59,61),用于检测奇偶错误并计数相对的第二行(65)中的错误。 提供定时产生装置(62),用于在接收到突发载波时读出计数装置(61)。 相位调制器(64)根据定时产生装置(62)的输出,向相对的第二行(65)中的时钟脉冲提供相位调制。 根据来自终端发送器(52)的第一行(54)中的命令,将第二行(65)中的错误数存储在计数装置(61)中。 计数装置(61)的内容通过在接收到突发载波时在第二行(65)中的时钟脉冲的相位调制被转发到终端接收器(66)。 命令和突发载波通过布置第一行(54)中的在役数据的奇偶校验位来构成。
    • 8. 发明授权
    • Automatic equalization system
    • 自动均衡系统
    • US4201959A
    • 1980-05-06
    • US854103
    • 1977-11-23
    • Yasuhiko NiiroHiroharu Wakabayashi
    • Yasuhiko NiiroHiroharu Wakabayashi
    • H04B3/10
    • H04B3/10
    • In a long line transmission system, the signal level at the transmission station is pre-equalized by the value L.sub.s which is adjustable according to the signal level at the receiving station. The receiving station equalizes the received signal to the standard level at the output of the receiving station. The difference between the actual level L.sub.r at the input of the receiving station and the standard level there, is fed back to the transmission station through a return transmission line, and said difference is utilized to adjust the pre-equalization value L.sub.s at the transmission station. The ratio L.sub.s /L.sub.r is controlled to be constant by the operation of the pre-equalization level distributor installed at the transmission station.
    • 在长线路传输系统中,发送站处的信号电平被按照接收站的信号电平可调节的值Ls进行前置均衡。 接收站在接收站的输出端将接收信号均衡为标准电平。 接收站输入端的实际电平Lr与其间的标准电平之间的差异通过返回传输线路反馈到发送站,并且利用所述差值来调整发送站处的预均衡值Ls 。 通过安装在发送站的预均衡水平分配器的操作将比率Ls / Lr控制为恒定。
    • 9. 发明授权
    • Optical fiber submarine cable
    • 光纤海缆
    • US4490009A
    • 1984-12-25
    • US408160
    • 1982-08-16
    • Taiichiro NakaiKahei FurusawaMasanori SatoYasuhiko NiiroYoshihiro EjiriMakoto Nunokawa
    • Taiichiro NakaiKahei FurusawaMasanori SatoYasuhiko NiiroYoshihiro EjiriMakoto Nunokawa
    • H01B11/22G02B6/44G02B5/14
    • G02B6/4416G02B6/4427
    • An optical fiber submarine cable, which is provided with at least one coated optical fiber, a power supplying, pressure resisting layer of a pipe-like configuration, a tension resisting wire layer formed of a conductive material of relatively low conductivity and disposed in close contact with the power supplying, pressure resisting layer of the pipe-like configuration, and an insulator layer disposed around the tension resisting wire layer. The power supplying, pressure resisting layer is formed as at least one inner layer and an outer layer. The inner layer is formed as a single layer or composite layers by forming a tape-like good conductor material into a pipe-like configuration with its joint made a mere butt, or by assembling together a plurality of pressure resisting material segments equally divided in the circumference direction for at least one layer of the inner layer and having housed the above-mentioned at least one coated optical fiber in an optical fiber housing space defined centrally of the inner layer. The outer layer is formed by winding a metal tape on the inner layer.
    • 一种设置有至少一个涂覆光纤的光纤海缆,具有管状构造的供电耐压层,由导电性相对较低的导电材料形成的抗拉线层,并且紧密接触 其具有管状构造的供电耐压层和设置在抗张力线层周围的绝缘体层。 供电耐压层形成为至少一个内层和外层。 通过将带状良好导体材料形成为管状构造而将内层形成为单层或复合层,其接头仅仅是对接的,或者通过将多个耐压材料段组装在一起, 至少一层内层的圆周方向,并且将上述至少一个涂覆的光纤容纳在限定在内层中心的光纤容纳空间中。 外层通过在内层上缠绕金属带而形成。