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1.发明授权
公开(公告)号：US5212685A
公开(公告)日：1993-05-18
申请号：US672811
申请日：1991-03-21
IPC分类号： H04L5/16
CPC分类号： H04L5/16
摘要： An interface circuit for connecting an electrical half-duplex system to an optical simplex system includes logic which permits keep-alive signals to be gated onto the transmitting simplex fiber when data is not being received on the half-duplex conductor. The interface circuit includes receive logic connected in parallel with the receive data path. The receive logic responds to predetermined bit patterns in the received data to control the receive and transmit data path connections. The interface circuit also includes transmit logic connected in parallel with the transmit data path. The transmit logic responds to bit patterns in the data on the transmit data path to selectively gate the output of a keep-alive oscillator onto the transmit simplex fiber.
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公开(公告)号：US4553814A
公开(公告)日：1985-11-19
申请号：US531886
申请日：1983-09-14
CPC分类号： G02B6/3889 , G02B6/32 , G02B6/3846 , G02B6/3849 , G02B6/389 , G02B6/3897
摘要： A detachable fiber optic connector assembly consists of two major components, a cable terminator and a connector unit. The cable terminator includes a collar which is glued or crimped onto the cable jacket adjacent the stripped end of the cable and a cylindrical housing which is trapped on the cable by the collar. The connector unit includes a short length of permanently-retained fiber with one exposed end. This unit further includes a splice sleeve for receiving the stripped end of the cable fiber and the other end of the permanently-retained fiber. The cable terminator and the connector unit have latches, such as BNC components, for detachably coupling the connector unit to the cable terminator.
摘要翻译： 可拆卸光纤连接器组件由两个主要组件，电缆终端器和连接器单元组成。 电缆终端器包括一个套环，其与电缆的剥离端部相邻地胶合或压接在电缆护套上，以及一个圆柱形壳体，该套筒被套环卡在电缆上。 连接器单元包括具有一个暴露端的短长度的永久保持光纤。 该单元还包括用于接收电缆光纤的剥离端和永久保持的光纤的另一端的接头套筒。 电缆终端器和连接器单元具有用于将连接器单元可拆卸地连接到电缆终端器的闩锁，诸如BNC部件。
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公开(公告)号：US5224111A
公开(公告)日：1993-06-29
申请号：US729954
申请日：1991-07-15
CPC分类号： H04B10/2581 , H04B10/504
摘要： A laser source suitable for driving single mode and multimode fiber communication lines. The driver circuit includes a photo diode that, in multimode operation, responds to the laser light and causes the laser's output amplitude and wavelength to rapidly fluctuate thus producing the incoherent light required to drive multimode fiber. In single mode operation, the photo diode is disabled and the laser produces the requisite coherent light.
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公开(公告)号：US4566134A
公开(公告)日：1986-01-21
申请号：US679526
申请日：1984-12-07
CPC分类号： H04B10/801
摘要： In a highly modular terminal, pluggable functional units communicate optically through a closed chamber. Some functional units are logically integrated into the terminal structure while being physically remote. In a supermarket system, bar code scanners and produce scales are examples of physically remote functional units. A circuit for interfacing the remote units to the closed chamber uses a broadcast/concentrator mode of operation. A single optical detector broadcasts the extant chamber signals to all of the remote functional units. Signals from the remote units are logically ORed or concentrated to provide a drive signal for a single optical emitter capable of injecting optical energy into the chamber.
摘要翻译： 在高度模块化的终端中，可插拔功能单元通过闭合的腔室进行光学通信。 一些功能单元在物理上远程地逻辑地集成到终端结构中。 在超市系统中，条码扫描器和生产秤是物理上远程功能单元的示例。 用于将远程单元连接到封闭室的电路使用广播/集中器操作模式。 单个光学检测器将现有信号广播到所有远程功能单元。 来自远程单元的信号被逻辑或或集中以提供能够将光能注入到腔中的单个光发射器的驱动信号。
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公开(公告)号：US4288869A
公开(公告)日：1981-09-08
申请号：US114525
申请日：1980-01-23
摘要： A solid state circuit, which serves as a twin simplex/half-duplex converter, includes a triple input NAND gate. The output of the NAND gate is connected directly to the outgoing simplex conductor. Signals on the incoming simplex conductor are applied to the three inputs of the NAND gate through separate signal paths which introduce different delays. One signal path introduces an intermediate delay before applying the incoming signal to the NAND gate in an inverted form. The half-duplex line is connected to this signal path. While incoming signals are applied to all three inputs to the NAND gate as well as to the half-duplex line, a lack of coincidence at the inputs prevents any incoming signal from passing through the converter to the outgoing simplex line.
摘要翻译： 作为双工单工/半双工转换器的固态电路包括三输入NAND门。 NAND门的输出直接连接到输出单工导体。 输入单工导体上的信号通过引入不同延迟的单独信号路径施加到NAND门的三个输入。 一个信号路径在将输入信号以倒置形式施加到NAND门之前引入中间延迟。 半双工线连接到该信号路径。 当输入信号被施加到NAND门和半双工线路的所有三个输入时，输入端的缺失一致会阻止任何进入的信号通过转换器到达出线单工线路。
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6.发明授权
公开(公告)号：US4598974A
公开(公告)日：1986-07-08
申请号：US765756
申请日：1985-08-15
CPC分类号： G02B6/2553 , G02B6/2551
摘要： An optical fiber connector includes a ferrule with an interior splice chamber. A fiber stub is installed in the ferrule in a factory operation with one end in the splice chamber. The ferrule also includes permanent, opposed electrodes with tips at the walls of the splice chamber. To attach the connector to an optical cable in a field operation, a predetermined length of insulation is stripped from the end of the cable and the bare fiber is inserted into the splice chamber through a bore in the ferrule. Voltage is applied across the electrodes to create a plasma arc in the splice chamber. The plasma arc melts and fuses the adjacent ends of the cable fiber and fiber stub.
摘要翻译： 光纤连接器包括具有内部接合室的套圈。 在工厂操作中，一个纤维短截线安装在套圈中，一端在接头室中。 套圈还包括在接合室的壁处具有尖端的永久的相对电极。 为了在现场操作中将连接器连接到光缆上，从电缆的端部剥离预定长度的绝缘体，并且裸光纤通过套圈中的孔插入到接合室中。 在电极两端施加电压，以在接合室中产生等离子体电弧。 等离子体电弧熔化并熔接电缆光纤和光纤短截线的相邻端。
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公开(公告)号：US5157530A
公开(公告)日：1992-10-20
申请号：US467091
申请日：1990-01-18
CPC分类号： H04J14/02
摘要： Described are a technique and an apparatus for deskewing data transmitted via a dispersive medium such as a fiber optic link. The relative delays in arrival time for a plurality of bits, propagated in separate channels are measured. The relative delays are used to calculate the wavelength (.lambda.) of one channel and the zero dispersion wavelength (.lambda..sub.0) of the medium. The relative delays in arrival times for the remaining bits in a group of bits are predicted using the measured relative delays, the spacing (.delta.) between the transmitters and the calculated wavelengths. An adjustable delay for storing data bits is provided in each channel. The relative delays are used to deskew the individual bits.
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公开(公告)号：US4792999A
公开(公告)日：1988-12-20
申请号：US4448
申请日：1987-01-20
CPC分类号： H04B10/67 , G02F1/113 , H04B10/675 , H04J14/02
摘要： A wavelength agile optical receiver can be used in an optical equivalent of an "order wire" data communication system. The receiver includes an acousto-optic grating which can be tuned to deflect optical signals received at a particular wavelength by changing a drive signal produced by an acoustic transducer. A multi-wavelength optical signal is applied to the grating. Under "order wire" or quiescent conditions, light at an order wire wavelength is deflected onto a split optical detector. A processor is employed to select control signals for a voltage-controlled oscillator which drives the acoustic transducer. The processor can cause the transducer output to be changed to provide deflection of optical energy at a selectable wavelength onto the detector.
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公开(公告)号：US4527285A
公开(公告)日：1985-07-02
申请号：US362681
申请日：1982-03-29
CPC分类号： G07G1/0018 , G06F1/183 , G07G1/12 , H05K7/1439 , Y10S439/928
摘要： A modular terminal comprising a frame, a data distribution chamber, a power distribution apparatus and plural functional units. The functional units are supported and oriented by the frame in such a way that each interconnects with the power distribution components. Functional units communicate via optical transmissions through the data distribution chamber. This allows a functional unit to be inserted, removed or moved from one frame location to another without special equipment or tools by unskilled personnel.
摘要翻译： 模块化终端，包括框架，数据分配室，配电装置和多个功能单元。 功能单元由框架支撑和定向，使得每个功能单元与配电组件互连。 功能单元通过数据分配室的光传输进行通信。 这允许功能单元被插入，移除或从一个框架位置移动到另一个框架位置，而不需要非熟练人员的特殊设备或工具。
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公开(公告)号：US4245886A
公开(公告)日：1981-01-20
申请号：US73771
申请日：1979-09-10
CPC分类号： G02B26/004 , G02B6/3538 , G02B6/3574 , G02B6/359
摘要： A light switch for controlling the transmission of optical energy through optical fibers includes a hollow, light-transmitting tube extending transversely across the end of at least one light transmitting fiber. The tube contains one or more masses of light diverting material in a matrix of light-transparent fluid. The masses of light diverting material may be reflective, refractive or absorbent. Means are provided for varying the pressure along the tube to shift the masses relative to the light transmitting fiber so as to divert or pass the light to receiving fibers.
摘要翻译： 用于控制通过光纤传输光能的光开关包括横向穿过至少一个光传输光纤的端部延伸的中空的透光管。 该管在光透明流体基质中含有一种或多种光转移材料。 光转向材料的质量可以是反射的，折射的或吸收的。 提供了用于改变沿着管的压力的装置，以使质量相对于光传输光纤移动，以将光转移或传递到接收光纤。
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