Fabrication technique for low-loss fused taper directional couplers and
pressure sensor produced thereby
    1.
    发明授权
    Fabrication technique for low-loss fused taper directional couplers and pressure sensor produced thereby 失效
    用于低损失熔融锥形定向耦合器和由此生产的压力传感器的制造技术

    公开(公告)号:US4895423A

    公开(公告)日:1990-01-23

    申请号:US293074

    申请日:1989-01-03

    IPC分类号: G01L11/02 G02B6/28

    CPC分类号: G02B6/2835 G01L11/025

    摘要: A method of forming a single mode biconical fiber optic coupler comprising holding 2 or more optical fibers parallel to and in contact with each other at spaced apart locations, exerting equal tension in opposite directions to the fibers at said spaced apart locations to stretch the fibers, fusing the fibers over a waist region, and scanning the tip of a flame from a microtorch back and forth along the fibers at a speed which is at least five times the speed of stretching of the fibers. This results in an overcoupled low loss coupler, a pressure or a temperature sensor, comprised of at least a pair of monomode optical fibers fused and parallel at a stretched waist portion, each having biconical tapers at opposite ends of the waist portion, the coupler having exhibited at least about 500 power transfer cycles during stretching formation of the waist portion.

    摘要翻译: 一种形成单模双锥形光纤耦合器的方法,包括在间隔开的位置处彼此保持平行于或相互接触的2根或更多根光纤,在所述间隔开的位置处向与纤维相反的方向施加相等的张力以拉伸纤维, 将纤维熔合在腰部区域上,并且以至少是纤维拉伸速度的五倍的速度沿着纤维来回扫描来自微弧的火焰的尖端。 这导致了过耦合的低损耗耦合器,压力或温度传感器,由至少一对在拉伸的腰部处熔合和平行的单模光纤组成,每对光纤在腰部的相对端具有双锥形锥形,耦合器具有 在拉伸形成腰部期间展现出至少约500次功率传递循环。

    Wavelength selective optical devices using optical directional coupler
    2.
    发明授权
    Wavelength selective optical devices using optical directional coupler 失效
    使用光学定向耦合器的波长选择性光学器件

    公开(公告)号:US4900119A

    公开(公告)日:1990-02-13

    申请号:US176683

    申请日:1988-04-01

    IPC分类号: G02B6/12 G02B6/34

    摘要: New types of narrowband wavelength selective optical devices are described. Various configurations are possible, according to the invention, that perform as narrowband wavelength selective transmission or reflection filters or as narrowband wavelength selective optical taps or combiners. The optical devices of the invention include a 3 dB optical directional coupler and wavelength selecting elements such as Bragg reflection gratings or Fabry-Perot resonators usually positioned in optical symmetry with respect to the directional coupler. Two or more wavelength selecting elements can be used to obtain desired filtering characteristics.

    摘要翻译: 描述了新型窄带波长选择光学器件。 根据本发明,根据本发明的各种配置可以作为窄带波长选择性透射或反射滤波器或者作为窄带波长选择性光学抽头或组合器来执行。 本发明的光学器件包括3dB光学定向耦合器和诸如布拉格反射光栅或法布里 - 珀罗谐振器的波长选择元件,通常相对于定向耦合器定位成光学对称。 可以使用两个或更多个波长选择元件来获得期望的滤波特性。