Optical resonating device
    2.
    发明授权
    Optical resonating device 失效
    光学谐振装置

    公开(公告)号:US4839898A

    公开(公告)日:1989-06-13

    申请号:US148660

    申请日:1988-01-25

    摘要: An optical fiber laser comprises an optical resonant cavity defined by an optical fiber (1). First and second reflectors (8, 13; 14, 19) are optically coupled with respective ends of the fibre. The first reflector is adapted to reflect radiation at the lasing wavelength and the second reflector to be partially transparent to radiation at the lasing wavelength. Each reflector comprises a directional coupler (8; 14) having first and second pairs of ports. One each of the one pair of ports (11; 16) of each coupler (8; 14) is optically coupled with the cavity (1) while both ports of the other pair (9, 10; 17,18) are coupled with a respective loop of optical fibre (13, 19). The remaining port (12) of one coupler (8) is connected with a source of pumping radiation (6), and the remaining port (15) of the other coupler (14), is available to output laser radiation.

    Optical star couplers
    3.
    发明授权
    Optical star couplers 失效
    光星联轴器

    公开(公告)号:US5129021A

    公开(公告)日:1992-07-07

    申请号:US634880

    申请日:1991-01-10

    IPC分类号: G02B6/28

    CPC分类号: G02B6/2856

    摘要: An optical 1.times.N star coupler has a single mode input fibre (I) and N single mode output fibres (O.sub.1) forming an output fibre assembly. The output fibres (O) are tapered within a former (2) which holds each output fibre (O) so it is positioned substantially identically relative to the remaining output fibres. The input fibre (I) is also tapered such that the fundamental mode field of the input fibre (I) and output fibre assembly are substantially equal. The identical relative positions of the output fibres (O) provides a wavelength independent 1.times.N star coupler.

    Technique for reducing fibre joint loss
    4.
    发明授权
    Technique for reducing fibre joint loss 失效
    减少纤维接头损耗的技术

    公开(公告)号:US4900114A

    公开(公告)日:1990-02-13

    申请号:US116078

    申请日:1987-09-29

    CPC分类号: G02B6/262 G02B6/2551

    摘要: A technique for reducing splice loss between similar or dissimilar optical fibres. Two fibers (10,11) are joined by fusion splicing and the joint region is tapered until the cladding assumes a guiding function. This produces a mode transformer which covers the fundamental mode of one fibre to that of the other with little or negligible loss.

    摘要翻译: PCT No.PCT / GB87 / 00109 Sec。 371日期1987年9月29日第 102(e)1987年9月29日PCT PCT 1987年2月13日PCT公布。 公开号WO87 / 05118 日期1987年8月27日。一种用于减少相似或不同光纤之间的接头损耗的技术。 两根纤维(10,11)通过熔接接合,并且接合区域是渐缩的,直到包层呈现引导功能为止。 这产生一种模式变压器,其将一根光纤的基本模式覆盖到另一根光纤的基本模式,其损耗很小或可忽略不计。

    Method of forming an optical fibre coupler and a coupler so formed
    5.
    发明授权
    Method of forming an optical fibre coupler and a coupler so formed 失效
    形成光纤耦合器和形成的耦合器的方法

    公开(公告)号:US5175779A

    公开(公告)日:1992-12-29

    申请号:US743317

    申请日:1991-08-20

    IPC分类号: G02B6/28

    CPC分类号: G02B6/2856

    摘要: Six secondary optical fibres (20) are located about and parallel to a central optical fibre (21) by a capillary tube (22) to form a fibre bundle which is then formed into a fused, tapered coupler in which the tapering is stopped when the proportions of light coupled out of the central fibre (21) at 1.3 and 1.53 .mu.m are first equal. The fusion process can provide sufficient fusion between the central fibre and each secondary fibre to provide a 1 to (n+1) coupler where n is the number of secondary fibres. This method provides a coupler which is wavelength-flattened between 1.3 and 1.53 .mu.m using similar fibres.

    摘要翻译: PCT No.PCT / GB90 / 00419 Sec。 371日期1991年8月20日 102(e)1991年8月20日PCT PCT 1990年3月20日PCT公布。 出版物WO90 / 11540 1990年10月4日,第二光纤(20)通过毛细管(22)围绕并平行于中心光纤(21)而形成纤维束,然后将纤维束形成熔融的锥形耦合器 当在1.3和1.53μm的中心纤维(21)耦合的光的比例首先相等时,锥形停止。 融合过程可以在中心纤维和每个次级纤维之间提供足够的融合,以提供1至(n + 1)成色剂,其中n为次级纤维的数量。 该方法使用类似的纤维提供了在1.3和1.53μm之间波长平坦化的耦合器。

    Method for fabrication of fused fibre devices
    6.
    发明授权
    Method for fabrication of fused fibre devices 失效
    熔融纤维装置的制造方法

    公开(公告)号:US5288301A

    公开(公告)日:1994-02-22

    申请号:US835439

    申请日:1992-02-28

    IPC分类号: C03B37/15 G02B6/28 C03B37/23

    CPC分类号: G02B6/2835

    摘要: Method and apparatus for fabricating fused optical fibre devices includes a furnace provided with an electric heating element. A heat-distributing insert is provided within the heating element, the heating element and the insert being sized and shaped to define a heating chamber for an optical fibre arrangement. The method includes passing electric current through the heating element, and supplying and maintaining an inert atmosphere within the heating chamber.

    摘要翻译: PCT No.PCT / GB90 / 01345 Sec。 一九九二年二月二十八日 102(e)日期1992年2月28日PCT提交1990年8月31日PCT公布。 出版物WO91 / 03436 1991年3月21日。用于制造熔融光纤装置的方法和装置包括设有电加热元件的炉子。 散热插入件设置在加热元件内,加热元件和插入件的尺寸和形状被设计成限定用于光纤装置的加热室。 该方法包括使电流通过加热元件,并且在加热室内提供和保持惰性气氛。

    Method of forming multiport optical fibre coupler and the coupler so
formed
    7.
    发明授权
    Method of forming multiport optical fibre coupler and the coupler so formed 失效
    形成多端口光纤耦合器和耦合器的方法

    公开(公告)号:US5373572A

    公开(公告)日:1994-12-13

    申请号:US33378

    申请日:1993-03-18

    IPC分类号: C03B37/14 G02B6/28 G02B6/26

    CPC分类号: G02B6/2835 G02B6/2856

    摘要: A method of forming a multiport optical fiber coupler in which a bundle of seven optical fibers are located in close-packed hexagonal array within a capillary tube and twisted. An optical source is coupled to an outer fiber. A fused, tapered coupler is formed, the tapering being stopped when the minimum of optical power outputs is first maximized. This provides a 6.times.7 optical fiber coupler. Also disclosed is a 7.times.7 optical fiber coupler formed by fusing the coupler during formation sufficiently to provide that the maximum insertion loss through the device between any input and output is minimized.

    摘要翻译: 一种形成多端口光纤耦合器的方法,其中七根光纤束以紧密堆积的六边形阵列位于毛细管内并扭曲。 光源耦合到外部光纤。 形成熔接的锥形耦合器,当光功率输出的最小值首先被最大化时,锥形停止。 这提供了一个6x7光纤耦合器。 还公开了一种7x7光纤耦合器,其通过在形成期间将耦合器熔化成足以使得在任何输入和输出之间通过该器件的最大插入损耗最小化而形成。

    Fabrication of fused fibre devices
    8.
    发明授权
    Fabrication of fused fibre devices 失效
    熔融纤维装置的制造

    公开(公告)号:US5342425A

    公开(公告)日:1994-08-30

    申请号:US155024

    申请日:1993-11-01

    IPC分类号: C03B37/15 G02B6/28 C03B37/025

    CPC分类号: G02B6/2835

    摘要: Apparatus for fabricating fused optical fibre devices comprises a furnace provided with an electric heating element (5). A heat-distributing insert (7) is provided within the heating element (5), the heating element and the insert being sized and shaped to define a heating chamber for an optical fibre arrangement. The apparatus includes means for passing electric current through the heating element (5), and means (8) for supplying and maintaining an inert atmosphere within the heating chamber.

    摘要翻译: 用于制造熔融光纤装置的装置包括设置有电加热元件(5)的炉。 散热插入件(7)设置在加热元件(5)内,加热元件和插入件的尺寸和形状被设计成限定用于光纤装置的加热室。 该装置包括用于使电流通过加热元件(5)的装置和用于在加热室内供应和维持惰性气氛的装置(8)。

    Optical fused couplers
    9.
    发明授权
    Optical fused couplers 失效
    光耦合器

    公开(公告)号:US4798436A

    公开(公告)日:1989-01-17

    申请号:US33102

    申请日:1987-03-20

    摘要: A fused optical fibre coupler in which one of the fibres has a propagation constant which in the coupling region is slightly different from that of the other. The propagation constant difference can be arranged to provide selected splitting ratios over a relatively wide wavelength range.

    摘要翻译: PCT No.PCT / GB86 / 00445 Sec。 371日期1987年3月20日 102(e)1987年3月20日PCT PCT 1986年7月25日PCT公布。 公开号WO87 / 00934 日期1987年2月12日。一种熔融光纤耦合器,其中一个光纤具有在耦合区域中的一个与另一个光纤耦合区域中的传播常数略有不同的传播常数。 传播常数差可以被布置成在相对宽的波长范围内提供选择的分离比。