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1. (WO2018139214) OPTICAL COUPLING DEVICE AND METHOD FOR PRODUCING SAME

Pub. No.:    WO/2018/139214    International Application No.:    PCT/JP2018/000616
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 13 00:59:59 CET 2018
IPC: G02B 6/26
G02B 6/255
Applicants: TDK CORPORATION
TDK株式会社
Inventors: NAKAHARA, Motohiro
中原 基博
MIYA, Tetsuo
宮 哲雄
Title: OPTICAL COUPLING DEVICE AND METHOD FOR PRODUCING SAME
Abstract:
The purpose of the present disclosure is to make highly efficient optical coupling possible between an optical fiber and the end surface of an optical circuit without using a V-groove substrate. The present disclosure is an optical coupling device equipped with an optical fiber (11), high NA optical waveguides (12, 22), a mode-field converter (PS) having a mode field diameter which is larger than the other ends of the high NA optical waveguides (12, 22), and a capillary (13) having a through-hole for holding the high NA optical waveguides (12, 22) and the mode-field converter (PS), wherein the other ends of the high NA optical waveguides (12, 22) are positioned in the end section of the through-hole.