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    • 2. 发明授权
    • Method of identifying an optical cable
    • 识别光缆的方法
    • US5331392A
    • 1994-07-19
    • US915813
    • 1992-07-24
    • Akira FujisakiShintaro Sentsui
    • Akira FujisakiShintaro Sentsui
    • G01M11/00G02B6/00G02B6/44G01N21/00
    • G01M11/31G02B6/447
    • A method of identifying a particular optical cable C1 out of a set of optical cables C1, C2 by applying an external signal by means of a signal applying apparatus 16 while an optical signal is transmitted from means for transmitting optical signals and monitoring changes in the signals received by means for receiving optical signals. Since the difference in the frequencies and the levels of the higher harmonics generated by the external signal in the particular cable and the other cable(s) that are laid so close to one another that the phenomenon of cross talk remarkably appears, the optical cable in question can be identified almost without fail.
    • PCT No.PCT / JP91 / 01656 Sec。 371日期:1992年7月24日 102(e)日期1992年7月24日PCT 1991年11月29日PCT PCT。 公开号WO92 / 09873 日期:1992年6月11日。一种通过借助于信号施加装置16施加外部信号来识别一组光缆C1,C2中的特定光缆C1的方法,同时从发射光学装置 信号和监视通过接收光信号的装置接收的信号的变化。 由于由特定电缆中的外部信号产生的高次谐波的频率和电平之间的差异以及彼此靠近的另一个电缆,使得串扰现象显着出现,所以光缆 问题几乎可以被确定。
    • 4. 发明授权
    • Converting device using an optical fiber
    • 使用光纤的转换设备
    • US5170449A
    • 1992-12-08
    • US874529
    • 1992-04-27
    • Akira FujisakiShintaro Sentsui
    • Akira FujisakiShintaro Sentsui
    • G02B6/42G02B6/44G02F1/01
    • G02B6/447G02B6/4274G02B6/4287G02F1/0134
    • A optical talk set has a talk set including bending means for bending an optical fiber of an optical cable, vibration applying means for applying vibration to the optical fiber, and a light-receiving element for receiving light leaking upon bending of the optical fiber and for converting the light into electricity, a signal transmitting/receiving line having an input/output terminal, for enabling transmission of signals to be input to the bending means and the vibration applying means and a signal output from the light-receiving element, and a housing enclosing the converter, the signal transmitting/receiving line, and the light-receiving element. The input/output terminal of the signal transmitting/receiving line is provided so as to be exposed to the outside of the housing, by virtue of which a call can be made without opening the housing, facilitating maintenance, etc. of an optical fiber path.
    • 光学对讲机具有包括用于弯曲光缆的光纤的弯曲装置,用于向光纤施加振动的振动施加装置和用于接收光纤弯曲时漏光的光接收元件的对讲机,并且用于 将光转换为电,具有输入/输出端的信号发送/接收线,用于使得能够传输要输入到弯曲装置的信号和振动施加装置以及从光接收元件输出的信号;以及壳体 封闭转换器,信号发送/接收线路和光接收元件。 信号发送/接收线路的输入/输出端子被设置为暴露于壳体的外部,由此可以在不打开壳体的情况下进行呼叫,便于光纤路径的维护等 。
    • 10. 发明授权
    • Method for optical communications
    • 光通信方法
    • US5576871A
    • 1996-11-19
    • US449945
    • 1995-05-25
    • Hijiri NimuraAkira FujisakiHaruki Ohgoshi
    • Hijiri NimuraAkira FujisakiHaruki Ohgoshi
    • H04B10/07H04B10/079H04B10/2507H04B10/524H04B10/54H04B10/08
    • H04B10/07
    • There is provided a method for optical telecommunications with which an optical signal modulated for the plane of polarization can be received for certain without lowering the threshold level and being affected by noises so that any optical telecommunications can be identified without fail. With the method, an optical signal is modulated by continuous pulses a at the transmitting side before transmission and a predetermined number (n) of pulses a are extracted within a given period of time in synchronism at the receiving side so that the presence of a modulated optical signal is acknowledged only when the number of pulses a received within the given period of time is smaller than the predetermined number (n) but greater than another predetermined number (m) (n.gtoreq.m). This method may be so modified that the absence of a modulated optical signal is acknowledged even when the above defined number of pulses are received if k or more than k (k.gtoreq.1) noise signals b are found between any successive two of the received pulses.
    • 提供了一种用于光通信的方法,通过该方法可以在不降低阈值水平并且受噪声影响的情况下接收用于偏振平面调制的光信号,从而可以无故障地识别任何光通信。 利用该方法,在发送之前在发送侧的连续脉冲a调制光信号,并且在给定时间段内在接收侧同步地提取预定数量(n)个脉冲a,使得存在调制 光信号仅在给定时间内接收的脉冲数α小于预定数(n)但大于另一预定数(m)(n> / = m)时才被确认。 该方法可以如此修改,即使当接收到上述定义数量的脉冲时,如果在任何连续两个之间发现k个或更多个k(k> / = 1)个噪声信号b,则确认不存在调制光信号 接收脉冲。