Square optical pulse generator
    1.
    发明授权
    Square optical pulse generator 失效
    方形光学脉冲发生器

    公开(公告)号:US5208455A

    公开(公告)日:1993-05-04

    申请号:US842342

    申请日:1992-03-25

    摘要: An all-optical fibre Sagnac antiresonant interferometer (2) is formed from an optical fibre having a non-linear refractive index. The coupler (8) is a dichroic coupler coupling equal portions of a cw optical signal at 1.53 .mu.m from laser (16) to ports (14 and 16) and all of a pulsed optical signal from laser (20 ) to port (14). The intensity of the pulsed optical signal is sufficient to provide a relative phase shift in the counter propagating 1.53 .mu.m signals. The loop (6) is longer than the inverse of the absolute difference in group delays of the cw and pulsed optical so causing a square optical pulse at 1.53 .mu.m to be switched to port (12) of the coupler.

    摘要翻译: PCT No.PCT / GB90 / 01422 Sec。 371日期:1992年3月25日 102(e)1992年3月25日PCT PCT 1990年9月14日PCT公布。 出版物WO91 / 04593 日期为1991年4月4日。全光纤Sagnac反谐振干涉仪(2)由具有非线性折射率的光纤形成。 耦合器(8)是将激光器(16)到端口(14和16)的1.53μm的cw光信号的相等部分耦合到二极管,并且从激光器(20)到端口(14)的所有脉冲光信号, 。 脉冲光信号的强度足以提供反向传播1.53微米信号的相对相移。 循环(6)比cw和脉冲光学的组延迟的绝对差的倒数长,使得在1.53μm处的正方形光脉冲被切换到耦合器的端口(12)。

    Quantum non-demolition optical tapping
    2.
    发明授权
    Quantum non-demolition optical tapping 失效
    量子不拆光学攻丝

    公开(公告)号:US5333220A

    公开(公告)日:1994-07-26

    申请号:US842340

    申请日:1992-03-25

    IPC分类号: G02B6/28 G02F1/35 G02B6/26

    摘要: A single silica optical fiber (4) is formed in a Sagnac interferometer (2) by forming a fused, dichroic optical fiber coupler (8) having four ports (10, 12, 14 and 16). A 1.3 .mu.m optical data signal is coupled to the port (10) via a dichroic optical fiber coupler (18) which combines it with a 1.53 .mu.m c-w probe signal from laser (16). The coupler (8) splits the 1.53 .mu.m probe signal into two equal intensity, counter-propagating portions and couples the 1.3 .mu.m data signal so it propagates in one direction round the loop (6). The loop (6) exhibits a non-linearity such that the data signal provides a relative phase shift of the counter-propagating c-w probe portions causing a portion of the 1.53 .mu.m signal is switched to port (12). This 1.53 .mu.m switched output provides tapping of the data signal without affecting its intensity.

    摘要翻译: PCT No.PCT / GB90 / 01417 Sec。 371日期:1992年3月25日 102(e)日期1992年3月25日PCT提交1990年9月13日PCT公布。 公开号WO91 / 04509 日期:1991年4月4日。通过形成具有四个端口(10,12,14和16)的融合的二向色光纤耦合器(8),在Sagnac干涉仪(2)中形成单个二氧化硅光纤(4)。 1.3μm的光学数据信号经由二分色光纤耦合器(18)耦合到端口(10),该二向色光纤耦合器将其与来自激光器(16)的1.53μmc-w探针信号组合。 耦合器(8)将1.53μm的探测信号分成两个相等强度的反向传播部分,并耦合1.3μm的数据信号,使其沿着环路(6)的一个方向传播。 环路(6)呈现非线性,使得数据信号提供反向传播的c-w探头部分的相对相移,导致1.53μm信号的一部分被切换到端口(12)。 这个1.53微米的开关量输出提供数据信号的分接而不影响其强度。

    Optical domain digital pulse switching
    3.
    发明授权
    Optical domain digital pulse switching 失效
    光域数字脉冲切换

    公开(公告)号:US5307428A

    公开(公告)日:1994-04-26

    申请号:US949888

    申请日:1992-11-24

    摘要: An optical apparatus including a first optical coupling having a first and a second pair of optical communication ports in which substantially equal portions of an optical signal received at a port of one pair of ports are coupled to each port of the other pair of ports; an optical waveguide optically coupling the second pair of ports such that an optical signal leaving either one of the second pair of ports in a first polarization state; a second optical coupling for coupling an optical signal at a second wavelength to the optical waveguide so as to propagate along at least a portion of it in one direction only; and first and second polarizing beam splitters optically coupled to a respective one of the first pair of ports.

    摘要翻译: PCT No.PCT / GB91 / 00453 Sec。 371日期:1992年11月24日 102(e)日期1992年11月24日PCT 1991年3月26日PCT公布。 公开号WO91 / 14963 日期:1991年10月3日。一种光学装置,包括具有第一和第二对光通信端口的第一光耦合器,其中在一对端口的端口处接收的光信号的大致相等的部分耦合到 另一对港口; 光波导,其光耦合所述第二对端口,使得在第一偏振状态中离开所述第二对端口中的任一个的光信号; 第二光耦合器,用于将第二波长的光信号耦合到光波导,以沿着其至少一部分沿一个方向传播; 以及光学耦合到第一对端口中的相应一个端口的第一和第二偏振分束器。

    Optically controlled optical switch
    6.
    发明授权
    Optically controlled optical switch 失效
    光控开关

    公开(公告)号:US5473712A

    公开(公告)日:1995-12-05

    申请号:US66139

    申请日:1993-07-26

    IPC分类号: G02F1/35 G02F3/00 G01C19/72

    CPC分类号: G02F3/00 G02F1/3519

    摘要: An optical switch comprises an optical fibre Sagnac loop interferometer having an input port and an output port. A source of optical signals at 1.53 .mu.m is coupled to the input port and a source of control optical signals of wavelengths 1.30 .mu.m and 1.31 .mu.m are coupled to the interferometer by a dichroic coupler. The coupler splits the 1.53 .mu.m input optical signal into two signal portions which counterpropagate round the loop and couples the control signal to propagate in one direction only round the loop. The phase difference between the signal portions at the output port is dependent on the intensity of the control optical signal when they recombine at the coupler. The optical control signals are formed by combining at least two optical pulse streams, the pulses of distinct optical pulse streams being non-interferometric, to provide a logical AND gate.

    摘要翻译: PCT No.PCT / GB91 / 02091 Sec。 371日期:1993年7月26日 102(e)日期1993年7月26日PCT 1991年11月27日PCT PCT。 出版物WO92 / 09916 日期:1992年6月11日。光开关包括具有输入端口和输出端口的光纤Sagnac环路干涉仪。 1.53μm的光信号源耦合到输入端口,波长为1.30μm和1.31μm的控制光信号源通过二向色耦合器耦合到干涉仪。 耦合器将1.53μm输入光信号分成两个信号部分,这两个信号部分相反地绕着环路传播,并将控制信号耦合在一个方向上,仅在环路周围传播。 在输出端口处的信号部分之间的相位差取决于控制光信号在耦合器复合时的强度。 通过组合至少两个光脉冲流来形成光控制信号,不同的光脉冲流的脉冲是非干涉的,以提供逻辑与门。

    Optical device
    7.
    发明授权

    公开(公告)号:US4938557A

    公开(公告)日:1990-07-03

    申请号:US193285

    申请日:1988-05-11

    申请人: Keith J. Blow

    发明人: Keith J. Blow

    IPC分类号: G02F1/35 G02F3/00 G02F3/02

    CPC分类号: G02F3/02 G02F1/3515

    摘要: An optical device for use as an optical switch, optical amplifier or optical logic circuit comprises an optical waveguide such as a W profile optical fiber formed from an assembly of optically conductive media having different refractive indices, at least one of which is non-linear, whereby an optical signal with a single mode is guided or not guided along the waveguide in accordance with the intensity of the signal; and coupling means for coupling at least two optical signals into an input end of the waveguide. A Y-coupler is coupled with the optical waveguide to couple at least two optical signals into an input end of the waveguide. One of the optical signals may comprise a bias signal.

    Optical system
    8.
    发明授权
    Optical system 失效
    光学系统

    公开(公告)号:US5684615A

    公开(公告)日:1997-11-04

    申请号:US513972

    申请日:1995-09-07

    CPC分类号: H04B10/25077 G02F1/3513

    摘要: The invention relates to the control of soliton-soliton interaction through the application of a positive phase shift. For each soliton width there is a critical phase modulation level above which soliton-soliton interaction can be virtually eliminated. This enables the spacing between adjacent solitons to be reduced, increasing the system bandwidth even for long transmission distances. The invention finds application in submarine and other long haul systems.

    摘要翻译: PCT No.PCT / GB94 / 01750 Sec。 371 1995年9月7日第 102(e)1995年9月7日PCT PCT 1994年8月10日PCT公布。 公开号WO95 / 04952 日期1995年2月16日本发明涉及通过应用正相移对孤子 - 孤子相互作用的控制。 对于每个孤子宽度,存在关键的相位调制级别,高于该临界相位调制级别,可以实际上消除孤子 - 孤子相互作用。 这使得相邻孤子之间的间隔可以减小,即使对于长的传输距离也增加了系统带宽。 本发明适用于潜艇和其他长距离系统。

    Non-transform limited pulse locked radiation mode radiation generator
with external cavity having non-linear transmission characteristic
improving mode locking
    9.
    发明授权
    Non-transform limited pulse locked radiation mode radiation generator with external cavity having non-linear transmission characteristic improving mode locking 失效
    非变换有限脉冲锁定辐射模式辐射发生器,具有非线性传输特性改进模式锁定的外腔

    公开(公告)号:US4853933A

    公开(公告)日:1989-08-01

    申请号:US113820

    申请日:1987-09-30

    摘要: A radiation generator in which substantially all the radiation modes are locked with respect to one another comprises a radiation generating cavity defined by mirrors and a crystal for generating a continuous train of non-transform limited pulses of coherent radiation. An external cavity is positioned in association with the radiation generating cavity whereby radiation may pass in use in both directions between the two cavities. The external cavity is defined by a medium having a non-linear transmission characteristic which may be substantially non-dispersive for radiation from the generating cavity, and/or which has a negative group delay dispersion. The radiation path length is such that pulses fed into the external cavity are fed back to the radiation generating cavity in synchronism with a later pulse from the generating cavity.

    摘要翻译: PCT No.PCT / GB87 / 00072 Sec。 371日期1987年9月30日 102(e)1987年9月30日PCT PCT 1987年2月2日PCT公布。 公开号WO87 / 04871 日期1987年8月13日。其中基本上所有辐射模式相对于彼此锁定的辐射发生器包括由反射镜和晶体限定的辐射生成腔,用于产生连续的相干辐射的非变换限制脉冲序列。 外部空腔与辐射发生腔相关联地设置,从而辐射可以在两个空腔之间的两个方向上使用。 外部空腔由具有非线性传输特性的介质限定,该介质对于来自发生腔的辐射可能基本上不分散,和/或具有负组延迟色散。 辐射路径长度使得馈送到外部空腔的脉冲与来自发生腔的稍后脉冲同步地反馈到辐射发生腔。

    Optical switch
    10.
    发明授权
    Optical switch 失效
    光开关

    公开(公告)号:US5583957A

    公开(公告)日:1996-12-10

    申请号:US588298

    申请日:1996-01-18

    申请人: Keith J. Blow

    发明人: Keith J. Blow

    摘要: An optical switch includes a dual-core optical fibre coupler having waveguides which are erbium doped, silica-based fibre amplifiers. The waveguides are pumped by pump lasers which are used to control the mean differential gain of the waveguides to be zero or a first value at which two values the linear coupler is a cross-coupler or a through-coupler at an operating wavelength.

    摘要翻译: 光开关包括具有掺铒掺杂硅基光纤放大器的波导的双芯光纤耦合器。 波导由泵浦激光器泵浦,其用于将波导的平均微分增益控制为零或第一值,其中线性耦合器是工作波长处的交叉耦合器或通过耦合器的两个值。