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    • 1. 发明授权
    • Microphone having linear optical transducers
    • 具有线性光学传感器的麦克风
    • US6154551A
    • 2000-11-28
    • US160733
    • 1998-09-25
    • Anatoly Frenkel
    • Anatoly Frenkel
    • H04R23/00H04R25/00
    • H04R23/008
    • Microphone having linear optical transducers. The present invention includes the use of linear optical transducers in several configurations to detect the motion of one or more conventional microphone diaphragms in proportional response to incident acoustic signals. A light source, such as a laser or a light emitting diode directs light onto a reflecting microphone diaphragm responsive to sound waves, and the position of the reflected light is monitored using a position sensitive detector which effectively eliminates effects of light source intensity on the optical transducer-processed signal. Other embodiments make use of either a fixed knife edge or a knife edge which moves in response to the motion of the diaphragm to interrupt the light source in a proportional manner to the amplitude of motion of the diaphragm.
    • 具有线性光学传感器的麦克风。 本发明包括在几种配置中使用线性光学换能器来检测一个或多个常规麦克风隔膜在与入射声信号成比例的响应中的运动。 诸如激光器或发光二极管的光源响应于声波将光引导到反射麦克风隔膜上,并且使用位置敏感检测器监测反射光的位置,该位置敏感检测器有效地消除光源强度对光学器件的影响 传感器处理信号。 其他实施例利用固定刀刃或刀刃,刀片边缘或刀刃响应于膜片的运动而移动,以与隔膜的运动幅度成比例地中断光源。
    • 4. 发明授权
    • Etalon filters for optical channel selection in wavelength division
multiplexed fiber systems
    • 用于波分复用光纤系统中光通道选择的Etalon滤波器
    • US4813756A
    • 1989-03-21
    • US148071
    • 1988-01-25
    • Anatoly FrenkelChinlon Lin
    • Anatoly FrenkelChinlon Lin
    • G02B6/34G02B6/32
    • G02B6/29395G02B6/29358
    • Filter arrangements (400,500,600) are disclosed for tunable channel selection in optical wavelength division multiplexed systems. Each filter arrangement has an etalon device (e.g. 401-403) as a simple, compact, in-line component which is rotatably adapted for interposing between the ends of fiber optic cables for interconnecting the cables. An optical beam emanating from a free end of each cable end is focused and directed to the etalon device by a collimated lensed connector (e.g. 411). Identical etalon devices may be stacked and ganged for rotation in unison to increase the number of system channels that may be propagated. Non-identical etalon devices may be stacked and made independently rotatable to increase the free spectral range of the system.
    • 公开了用于光波分复用系统中的可调谐信道选择的滤波器布置(400,500,600)。 每个过滤器装置具有标准具装置(例如401-403),作为简单,紧凑的在线部件,其可旋转地适于插入用于互连电缆的光纤电缆的端部之间。 从每个电缆端的自由端发出的光束被准直透镜连接器(例如411)聚焦并被引导到标准具设备。 相同的标准具设备可以被堆叠并组合以一致旋转以增加可能传播的系统通道的数量。 不相同的标准具设备可以被堆叠并且可独立地旋转,以增加系统的自由光谱范围。
    • 5. 发明授权
    • Pulse frequency division multiplexing
    • 脉冲频分复用
    • US5351147A
    • 1994-09-27
    • US966784
    • 1992-10-27
    • Anatoly Frenkel
    • Anatoly Frenkel
    • H04J14/00H04J14/02
    • H04J14/00
    • Data transmissions from each of a multiplicity of users in a fiber-optic communications network employ pulse stream frequencies which uniquely differ by a given period offset, .DELTA.t, and are thus characteristic of each particular user. Such pulse streams 11, 12, etc. are multiplexed for transmission through the network, yet may be individually extracted at the facilities of a receiving user by means of a selector 26 comprising one or more non-linear optical logic devices 35, such as bistable semiconductor laser amplifiers or self-electrooptic effect devices, which are associated with optical delay means 34 having period offset characteristics peculiar to that of a specific transmitting user.
    • 来自光纤通信网络中的多个用户中的每一个的数据传输采用唯一地区别给定周期偏移量DELTA t的脉冲流频率,并且因此是每个特定用户的特征。 这样的脉冲流11,12等被复用以便通过网络进行传输,但是可以通过包括一个或多个非线性光学逻辑器件35的选择器26在接收用户的设施处单独提取,诸如双稳态 半导体激光放大器或自电光效应装置,其与具有特定发送用户特有的周期偏移特性的光延迟装置34相关联。