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一、前言根据十九院下达的“为光纤通信提供实用化、商品化光源和探测器的耦合器件,两年内指标达到:①小型化;②能与现行连接器配套使用;③LED——光纤(芯55μm±2μm,NA=0.17)耦合损耗小于15dB(3%),插口连接损耗<3dB。”任务的要求,从79年开始了LED和光纤耦合及其器件的研制工作,随着光源器件的突破,我们这项工作也得到较大的进展。本着“任务”的要求,我们选择了带半球面端光纤的耦合方式,带连接器接口的结构,既提高了耦合效率,又甩掉了光纤尾巴。两年来,我们从光路、工艺、结构等方面帮进行了实验。目前,该器件基本成熟,已达到了院任务要求,并可进行小批量生产。
I. Preface According to the “issued by the nineteenth hospital” for fiber-optic communications to provide practical, commercialized light source and detector coupling device, within two years to achieve the target: ① miniaturization; ② with the existing connector supporting the use of; ③ LED - optical fiber Core 55μm ± 2μm, NA = 0.17) coupling loss of less than 15dB (3%), socket connection loss <3dB. “Mission requirements, from 79 began LED and fiber coupling and the development of the device, with the light source device Breakthrough, we have made great progress in this work. In line with the requirements of ”mission", we have chosen a coupling method with a hemispherical surface-side optical fiber and a structure with a connector interface, which not only improves the coupling efficiency but also eliminates the fiber tail. In the past two years, we have experimented with the light path, technology and structure. At present, the device is basically mature, has reached the hospital mission requirements, and can be small batch production.