Optical filters
    2.
    发明授权
    Optical filters 失效
    光滤波器

    公开(公告)号:US06198863B1

    公开(公告)日:2001-03-06

    申请号:US09051207

    申请日:1998-04-28

    IPC分类号: G02B634

    摘要: An optical filter is formed from at least two grating located in a waveguide region of a semiconductor optical device. Each grating has a multiple peak optical passband. The gratings are spaced apart in the waveguide region and form an optical cavity having a comb-filter characteristic. The gratings may be located in the active region of an optical gain element and in a preferred example are superstructure gratings (SSGs). A number of filters may be joined together in series.

    摘要翻译: 光学滤波器由位于半导体光学器件的波导区域中的至少两个光栅形成。 每个光栅具有多峰光学通带。 光栅在波导区域中间隔开并形成具有梳状滤波器特性的光学腔。 光栅可以位于光学增益元件的有源区域中,并且在优选的示例中是上部结构光栅(SSG)。 多个过滤器可以串联在一起。

    Single mode optical waveguides of rectangular cross-section
    3.
    发明授权
    Single mode optical waveguides of rectangular cross-section 失效
    矩形横截面的单模光波导

    公开(公告)号:US4776655A

    公开(公告)日:1988-10-11

    申请号:US904280

    申请日:1986-09-08

    IPC分类号: G02B6/12 G02B6/122 G02B6/10

    CPC分类号: G02B6/122 G02B6/12

    摘要: An optical waveguide device, suitable for coupling to optical fibers, provides a combination of narrow optical confinement and small changes in refractive index along a first axis, with broad optical confinement and large changes in refractive index along a second, perpendicular axis. A rib waveguide in which a single transverse mode beam can propagate, comprises a thin guiding layer 2 sandwiched between a pair of relatively thick confining layers 1, 3 of refractive index only slightly less than that of the guiding layer 2. The rib is etched through both the upper confining layer 3 and the guiding layer 2 and is exposed at its sides and top to air.

    摘要翻译: 适于耦合到光纤的光波导器件提供窄光限制和沿着第一轴的小的变化的折射率的组合,具有宽的光限制和沿第二垂直轴线的折射率的大的变化。 其中单个横向模式光束可以传播的肋状波导包括薄的引导层2,其被夹在折射率仅略微小于引导层2的折射率的一对相对较厚的约束层1,3之间。肋被蚀刻穿过 上限制层3和引导层2都被暴露在其侧面和顶部与空中。

    Optical switching device with passive input and output stages and active
amplifier in a matrix stage
    5.
    发明授权
    Optical switching device with passive input and output stages and active amplifier in a matrix stage 失效
    具有无源输入和输出级和有源放大器的光学开关器件在矩阵阶段

    公开(公告)号:US5528710A

    公开(公告)日:1996-06-18

    申请号:US331604

    申请日:1994-12-12

    IPC分类号: G02F1/313 H04Q3/52 G02B6/35

    CPC分类号: G02F1/313 G02F2202/102

    摘要: A semiconductor optical switching device comprises a passive optical input stage, a matrix stage and a passive optical output stage. The matrix stage incorporates active amplifiers, the switch as a whole being therefore part passive and part active. Control over the switching configuration is provided by electrical inputs to the amplifiers. The matrix stage guides optical signals in a direction transverse to optical signals propagating in the input or output stages. With this configuration, fixed change in direction of the optical paths available to optical signals propagating through the device are provided by splitters, combiners and total internal reflection mirrors.

    摘要翻译: PCT No.PCT / GB93 / 00923 Sec。 371日期1994年12月12日第 102(e)日期1994年12月12日PCT提交1993年5月5日PCT公布。 公开号WO93 / 22708 日期:1993年11月11日。半导体光开关器件包括无源光输入级,矩阵级和无源光输出级。 矩阵平台包含有源放大器,因此开关作为一个整体是被动的和部分的。 开关配置的控制由放大器的电气输入提供。 矩阵级在横向于在输入或输出级中传播的光信号的方向上引导光信号。 利用这种配置,通过分离器,组合器和全内反射镜提供通过器件传播的光信号可用的光路方向的固定改变。

    Electro-optic devices with waveguide and having small spatial spread of
applied electric field
    7.
    发明授权
    Electro-optic devices with waveguide and having small spatial spread of applied electric field 失效
    具有波导的电光器件并具有小的施加电场的空间扩展

    公开(公告)号:US4793677A

    公开(公告)日:1988-12-27

    申请号:US918108

    申请日:1986-10-14

    IPC分类号: G02F1/015 G02F1/025

    CPC分类号: G02F1/025 G02F2001/0154

    摘要: An opto-electronic device, comprising an optical waveguide and means for imposing an electrical field in a direction transverse to the waveguide, is designed such that the spatial spread of the electrical field is very small. The electrical field overlies the region of peak amplitude of the profile of optical radiation in the waveguide. Constructed principally out of semiconductor materials made from elements selected from the III and V groups of the Periodic Table, the device lends itself to monolithic integration in optical communications systems.

    摘要翻译: 包括光波导和在横向于波导的方向上施加电场的装置的光电装置被设计成使得电场的空间扩展非常小。 电场覆盖在波导中的光学辐射轮廓的峰值振幅的区域。 主要由采用周期表III和V组元素制成的半导体材料构成,该器件适用于光通信系统中的单片集成。

    Optical clock extraction
    9.
    发明授权
    Optical clock extraction 失效
    光时钟提取

    公开(公告)号:US5602862A

    公开(公告)日:1997-02-11

    申请号:US146029

    申请日:1993-11-08

    摘要: In a high speed optical clock extraction arrangement, an incoming digital signal is divided between two paths (11, 25). The signal on one path (25) is fed direct to a receiver (203), while the signal on the other path (11) is fed to a non-linear optical amplifier (1) which has separate gain and absorbing regions. The non-linear optical amplifier (1) is triggered by the incoming signal to pulsate at a clock frequency contained in the signal, and the resultant strong output clock signal is coupled into the path (25) carrying the incoming signal to the receiver (203). The non-linear optical amplifier (1) can provide a very high frequency clock output as a result of selective modification of the carrier lifetime.

    摘要翻译: PCT No.PCT / GB92 / 00826 Sec。 371日期:1993年11月8日 102(e)日期1993年11月8日PCT提交1992年5月7日PCT公布。 WO92 / 20128 PCT出版物 日期:1992年11月12日在高速光时钟提取装置中,输入数字信号被分成两条路径(11,25)。 一个路径(25)上的信号被直接馈送到接收机(203),而另一路径(11)上的信号被馈送到具有单独的增益和吸收区域的非线性光放大器(1)。 非线性光放大器(1)由输入信号触发,以包含在信号中的时钟频率脉动,并且所得到的强输出时钟信号被耦合到承载输入信号的路径(25)到接收机(203 )。 作为选择性修改载波寿命的结果,非线性光放大器(1)可以提供非常高频的时钟输出。