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1. (WO2018139218) OPTICAL COUPLING DEVICE

Pub. No.:    WO/2018/139218    International Application No.:    PCT/JP2018/000624
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 13 00:59:59 CET 2018
IPC: G02B 6/255
G02B 6/26
Applicants: TDK CORPORATION
TDK株式会社
Inventors: NAKAHARA, Motohiro
中原 基博
MIYA, Tetsuo
宮 哲雄
Title: OPTICAL COUPLING DEVICE
Abstract:
The purpose of the present disclosure is to provide an optical coupling device which exhibits high airtightness between a capillary and an optical fiber comprising the same glass material as does the capillary. The present disclosure pertains to an optical coupling device equipped with: an optical fiber 11 which is a bare fiber, the end section of which has had some of the covering 113 removed therefrom, wherein a metal plating 21 covers the bare fiber near the end section 113a of the remaining covering 113 and also covers the periphery of the covering 113; a capillary for positioning an end section of the bare fiber in one end of the through-hole thereof, and positioning the end section 113a of the optical fiber covering 113 covered with the metal plating 21 in the through-hole other end 134, the inner wall surface 136 of which is covered with a metal plating 22; and a solder 31 for sealing the gap between the optical fiber 11 positioned in the other end of the through-hole and the inner wall of the through-hole.