Optically coupling optical fibres to injection lasers
    102.
    发明公开
    Optically coupling optical fibres to injection lasers 失效
    选择Koppeln von Fasern一个Injektionslasern

    公开(公告)号:EP0717297A2

    公开(公告)日:1996-06-19

    申请号:EP95308872.1

    申请日:1995-12-07

    IPC分类号: G02B6/42

    CPC分类号: G02B6/4237

    摘要: The end (5) of an optical fibre (4) is held in alignment with an injection laser (3) by securing the fibre to an elongate support member (6) whose end nearer the injection laser is then laser beam welded (12) to a pair of slide members (8) that have previously been secured by laser beam welding (11) to leave a precisely dimensioned small gap between the support and slide members. The smallness of the gap minimises displacement of the fibre during the welding process. The end of the support member remote from the injection laser is secured by laser beam welding (16) to a plastically deformable saddle (10).

    摘要翻译: 光纤(4)的端部(5)通过将光纤固定到细长的支撑构件(6)上而与注射激光器(3)保持对准,其中更靠近注射激光器的端部然后被激光束焊接(12)到 以前已经通过激光束焊接(11)固定的一对滑动构件(8),以在支撑件和滑动构件之间留下精确尺寸的小间隙。 间隙的小小使焊接过程中纤维的位移最小化。 远离注射激光器的支撑构件的端部通过激光束焊接(16)固定到可塑性变形的鞍座(10)上。

    AUTOMATIC DETERMINATION AND TUNING OF PICO-CELL TOPOLOGY FOR LOW-POWER WIRELESS SYSTEMS
    104.
    发明公开
    AUTOMATIC DETERMINATION AND TUNING OF PICO-CELL TOPOLOGY FOR LOW-POWER WIRELESS SYSTEMS 失效
    自动确定蜂窝和微微蜂窝拓扑结构用于高性能低无线系统和解

    公开(公告)号:EP0713632A1

    公开(公告)日:1996-05-29

    申请号:EP95919946.0

    申请日:1995-06-07

    IPC分类号: H04B7 H04B17 H04W16 H04W24

    摘要: PCT No. PCT/CA95/00328 Sec. 371 Date Jan. 26, 1996 Sec. 102(e) Date Jan. 26, 1996 PCT Filed Jun. 7, 1995 PCT Pub. No. WO95/35004 PCT Pub. Date Dec. 21, 1995A method of using the existing radio resources to automatically determine the current cellular topology is described. Wireless basestations are placed into a mode where they can transmit a signal which can be received by all of the base stations in range of the transmitting basestation. Each base station in the system serially broadcast a signal which is received by all other basestations within the range of the transmitting basestation. Each of the receiving radios determines the RSSI (Received Signal Strength Indication) at which they received the transmitted signal. The RSSI values are used to determine which base stations are physically co-located into cells and then determine the relative locations of the cells to each other.

    Optical waveguide grating filter
    105.
    发明公开
    Optical waveguide grating filter 失效
    Gitterfilter im optischen Wellenleiter

    公开(公告)号:EP0713110A1

    公开(公告)日:1996-05-22

    申请号:EP95308201.3

    申请日:1995-11-16

    发明人: Byron, Kevin C.

    摘要: The isolation between stop and pass bands afforded by an optical fibre normally reflective Bragg grating (5) reflective over a waveband λ₃ in an optical fibre (2) is enhanced by preceding it with two blazed Bragg gratings (3, 4) that are spectrally selectively mode coupling respectively over wavebands λ₁ and λ₂, where the λ₃ waveband compasses the spectral waveband separating waveband λ₁ from waveband λ₂. The fibre is connected to an optical circulator (40) or one port of an optical 4-port 3dB coupler (50).

    摘要翻译: 通过在光纤(2)中的波段λ3上反射的光纤常规反射布拉格光栅(5)提供的停止通带之间的隔离被增强,其中两个闪烁的布拉格光栅(3,4)是光谱的 分别在波段λ1和λ2上选择性地模式耦合,其中λ3波段将分离波段λ1的波段波段与波段λ2分离。光纤连接到光环行器(40)或光端口4端口 3dB耦合器(50)。

    Method and arrangement for antenna diversity in a base station receiver
    107.
    发明公开
    Method and arrangement for antenna diversity in a base station receiver 失效
    在einenFeststationsempfänger的Verfahren und VorrichtungfürAntennendiversity

    公开(公告)号:EP0709974A1

    公开(公告)日:1996-05-01

    申请号:EP95307324.4

    申请日:1995-10-16

    IPC分类号: H04B7/08

    摘要: This invention relates to radio communication systems and more especially to a base station arrangement comprising means to combine a number of signals input from receiving antennas. This invention is concerned with the combination techniques of spatially diverse systems and in particular seeks to provide a combination technique with performance close to optimal (maximal ratio) combiners but without the complexity. The invention provides a base station (10) arrangement which only processes the outputs from antennas (12) which contribute positively to the overall system carrier-to-noise ratio.

    摘要翻译: 本发明涉及无线电通信系统,更具体地涉及一种包括组合从接收天线输入的多个信号的装置的基站装置。 本发明涉及空间多样的系统的组合技术,特别地寻求提供具有接近最佳(最大比)组合器的性能但没有复杂性的组合技术。 本发明提供一种基站(10)装置,其仅对来自天线(12)的输出进行处理,这对整个系统的载波噪声比有积极作用。

    An interferometric multiplexer
    109.
    发明公开
    An interferometric multiplexer 失效
    Interferometrischer多路复用器

    公开(公告)号:EP0704949A1

    公开(公告)日:1996-04-03

    申请号:EP95306045.6

    申请日:1995-08-30

    摘要: An interferometric optical multiplexer (10) for use in optical communication systems and especially for use in optical communication systems employing fibre optical amplifiers is disclosed. The interferometric optical multiplexer has two input ports (12,14), an output port (16) and an output monitoring port (18). The interaction of the input signals is monitored by a photodetector situated in the monitoring part (18). In conjunction with a feedback circuit (24) wavelength separation of signals input at ports (12,14) is ensured. The system can be used to pump an erbium doped optical fiber amplifier.

    摘要翻译: 公开了一种用于光通信系统,特别是用于采用光纤放大器的光通信系统中的干涉光学多路复用器(10)。 干涉光学多路复用器具有两个输入端口(12,14),输出端口(16)和输出监视端口(18)。 输入信号的相互作用由位于监测部分(18)中的光电检测器监测。 结合反馈电路(24),确保在端口(12,14)处输入的信号的波长分离。 该系统可用于泵浦掺铒光纤放大器。

    REFERENCE VOLTAGE GENERATOR FOR DYNAMIC RANDOM ACCESS MEMORY
    110.
    发明授权
    REFERENCE VOLTAGE GENERATOR FOR DYNAMIC RANDOM ACCESS MEMORY 失效
    动态发言人随机存取参考电压发生器

    公开(公告)号:EP0581914B1

    公开(公告)日:1996-03-27

    申请号:EP92923332.8

    申请日:1992-11-12

    IPC分类号: G05F3/24 G11C11/409

    摘要: A reference voltage generator can provide RAMs (random access memories) with a reference voltage (generally mid-way between a supply voltage and a common potential), with improved follower characteristics. When the supply voltage and/or the load condition of the RAMs are significantly altered, the reference voltage is rapidly adjusted by dynamic switching FETs, being pulled down or up. Under balanced conditions when essentially no current flows in the switching FETs, overall power consumption is low.