Molding of optical components using optical fibers to form a mold

    公开(公告)号:US5311608A

    公开(公告)日:1994-05-10

    申请号:US110170

    申请日:1993-08-20

    摘要: Molding optical components from a mold that is produced using the same type of optical fibers that will be interconnected by the optical components. The outer diameter of a silica optical fiber varies only by approximately .+-.1 micron and the outer surface of a silica optical fiber has an optical finish. Thus by using optical fiber to fabricate molds, molds can be produced which have the required accuracy and finish for the production of optical components. The outer coating of the optical fibers used to fabricate the mold is only removed within and in close proximity to a combination region in a splitter/combiner resulting in the capability to pigtail optical fibers attached to a splitter/combiner molded from the resulting mold.

    Molded polymeric resin-filled optical coupler
    4.
    发明授权
    Molded polymeric resin-filled optical coupler 失效
    模制聚合树脂填充光耦合器

    公开(公告)号:US5166993A

    公开(公告)日:1992-11-24

    申请号:US624154

    申请日:1990-12-07

    IPC分类号: B29D11/00 G02B6/28 G02B6/36

    摘要: A molded polymeric resin-filled coupler comprising two low-refractive index plastic molded subassemblies. One subassembly has an optically finished mixing region, with a channel that has a V shaped lower portion. The mixing region subassembly is covered with a lid subassembly of the same material as the mixing region subassembly. During assembly, optical fibers are inserted into the mixing region subassembly which is then filled with a high index material to form a high-refractive index waveguide core region in the channel. The molded low-refractive index subassemblies provide a waveguide cladding around the high-refractive index waveguide core. Low cost is attained by utilizing optically finished metal molds to produce the subassemblies resulting in an optically finished mixing region and lid subassemblies without the need to polish each subassembly.

    摘要翻译: 包含两个低折射率塑料模制子组件的模制聚合树脂填充耦合器。 一个子组件具有光学完成的混合区域,具有V形下部的通道。 混合区域组件用与混合区域组件相同材料的盖子组件覆盖。 在组装期间,将光纤插入到混合区域子组件中,然后用高折射率材料填充以在沟道中形成高折射率波导芯区域。 模制的低折射率子组件在高折射率波导芯周围提供波导包层。 通过利用光学完成的金属模具来生产子组件可以实现低成本,从而产生光学完成的混合区域和盖子组件,而不需要抛光每个子组件。

    Optical coupler with mode-mixing refractive microparticles
    5.
    发明授权
    Optical coupler with mode-mixing refractive microparticles 失效
    具有模式混合折射微粒的光耦合器

    公开(公告)号:US5117472A

    公开(公告)日:1992-05-26

    申请号:US635907

    申请日:1990-12-28

    IPC分类号: G02B6/14 G02B6/28 G02B6/42

    摘要: An optical coupler having an optical core in which a small concentration of refractive microparticles has been added to a suspension material of the optical core. The result is that light from an optical source is bent slightly by the refractive effects of the microparticles and is coupled into the higher order of modes over a relatively short distance within the optical core. These microparticles are closely matched to the index of refraction of the suspension material resulting in smaller deflection angles and fewer reflections. In addition, these microparticles match the specific gravity of the suspension material such that they do not settle out of a suspension while the optical core material is being hardened from a semi-liquid state.

    摘要翻译: 具有光学芯的光学耦合器,其中已经将少量的折射微粒加到光学芯的悬浮材料中。 结果是来自光源的光被微粒的折射效应稍微弯曲,并且在光学核心内的相对短的距离内被耦合到更高阶的模式。 这些微粒与悬浮物材料的折射率紧密匹配,导致较小的偏转角和较少的反射。 此外,这些微粒与悬浮物的比重相匹配,使得它们在半芯状态从硬化状态硬化的同时不会悬浮。

    Process for fabricating plastic optical fiber
    9.
    发明授权
    Process for fabricating plastic optical fiber 有权
    制造塑料光纤的工艺

    公开(公告)号:US06254808B1

    公开(公告)日:2001-07-03

    申请号:US09321050

    申请日:1999-05-27

    IPC分类号: B29D1100

    摘要: A continuous extrusion process is provided capable of producing graded index plastic optical fiber at commercially useful speeds, e.g., at least 1 m/sec for 250 &mgr;m outer diameter fiber. Moreover, it is possible to predict the refractive index profile of the fiber, prior to actual fabrication, by performing a finite element analysis using various parameters of the extrusion process. Such prediction allows one to tune the parameters of the process to obtain a desirable outcome, while avoiding the need for substantial trial and error with the extrusion equipment.

    摘要翻译: 提供连续挤出方法,其能够以商业上有用的速度生产渐变折射率塑料光纤,例如对于250μm外径纤维为至少1m / sec。 此外,通过使用挤出工艺的各种参数进行有限元分析,可以在实际制造之前预测纤维的折射率分布。 这样的预测允许调整过程的参数以获得期望的结果,同时避免对挤出设备的实质性试验和错误的需要。

    Depolarization of light in an optical switching system
    10.
    发明授权
    Depolarization of light in an optical switching system 失效
    光开关系统中的光的去极化

    公开(公告)号:US5257329A

    公开(公告)日:1993-10-26

    申请号:US800792

    申请日:1991-11-27

    摘要: Depolarization of light by utilizing a small concentration of refractive or diffractive microparticles in an optical core of an optical coupler that is coupling light from polarized source to a polarization type optical switch such as a ferroelectric liquid crystal. The result is that light from the laser is bent slightly by either the refractive or diffractive effects of the microspheres which causes scattering; and as a consequence, the light is depolarized in a relatively short distance within the optical core before reaching the liquid crystal switch. The microparticles maybe closely matched to the index of refraction of the core material resulting in smaller deflection angles and lower reflections. In addition, these microparticles match the specific gravity of the core material such that they do not settle out of suspension while the core material is being hardened from a semi-liquid state.

    摘要翻译: 通过在光耦合器的光纤芯中利用小的浓度的折射或衍射微粒使光偏振,从而将来自偏振源的光耦合到诸如铁电液晶的偏振型光开关。 结果是来自激光的光被微球的折射或衍射效应略微弯曲,导致散射; 结果,在到达液晶开关之前,光在光学芯内的相对较短的距离内被去极化。 微粒可能与芯材料的折射率紧密匹配,导致较小的偏转角和较低的反射。 此外,这些微粒与芯材的比重相匹配,使得它们在芯材从半液态硬化的同时不会悬浮。