Micro lens formation at optical fiber ends
    1.
    发明授权
    Micro lens formation at optical fiber ends 失效
    光纤末端的微透镜形成

    公开(公告)号:US4118270A

    公开(公告)日:1978-10-03

    申请号:US658880

    申请日:1976-02-18

    摘要: Method of formation of lenses at optical fiber ends to increase the coupling efficiency thereof. In a first embodiment, the end of the optical fiber is masked with a substance non-soluble in the etching reagent. The portion of the coating at the very end of the fiber is then removed and the fiber end immersed in an etching reagent. The etching reagent serves to dissolve the uncoated portion of the fiber. By controlling the amount of time that the fiber end is in the reagent, different lens shapes may be formed. In a second embodiment, the fiber end is dipped into a liquid epoxy compound whereby a portion of the epoxy is deposited onto the fiber end. The surface tension of the portion deposited thereon draws the liquid epoxy into the desired lens shape. The epoxy is then hardened to form a permanent lens structure on the fiber end.

    摘要翻译: 在光纤端部形成透镜以增加其耦合效率的方法。 在第一实施例中,光纤的端部被不可溶于腐蚀试剂的物质掩蔽。 然后除去纤维末端的涂层部分,将纤维端浸入蚀刻试剂中。 蚀刻剂用于溶解纤维的未涂覆部分。 通过控制纤维端在试剂中的时间量,可以形成不同的透镜形状。 在第二实施方案中,纤维端被浸入液态环氧化合物中,由此一部分环氧树脂沉积在纤维端上。 沉积在其上的部分的表面张力将液体环氧树脂制成所需的透镜形状。 然后将环氧树脂硬化以在纤维端部上形成永久性的透镜结构。