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1. (WO2018084238) OPTICAL CIRCUIT BOARD, OPTICAL DEVICE, AND ALIGNMENT METHOD

Pub. No.:    WO/2018/084238    International Application No.:    PCT/JP2017/039713
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Fri Nov 03 00:59:59 CET 2017
IPC: G02B 6/122
G02B 6/30
Applicants: NTT ELECTRONICS CORPORATION
NTTエレクトロニクス株式会社
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
日本電信電話株式会社
Inventors: NAKANISHI, Tomohiro
中西 智浩
MINAMI, Motoki
南 元樹
KONNO, Satoru
今野 悟
SUZUKI, Yuichi
鈴木 雄一
SATO, Teruaki
佐藤 照明
NAGASHIMA, Shigeo
長島 茂雄
MINO, Shinji
美野 真司
ISHII, Motohaya
石井 元速
SOMA, Shunichi
相馬 俊一
KAMEI, Shin
亀井 新
ASAKAWA, Shuichiro
浅川 修一郎
Title: OPTICAL CIRCUIT BOARD, OPTICAL DEVICE, AND ALIGNMENT METHOD
Abstract:
The purpose of the present invention is to provide a low-cost optical circuit board with which it is possible to align with a fiber array while mounted on a package and reduce size without affecting the main circuit section, and to also provide an optical device and an alignment method. This optical circuit board has a loop-back circuit mounted thereon, which returns aligning light in the vicinity of a fiber array connection end to the fiber array. Since an aligning loop-back circuit can be thus formed in an optical waveguide pattern, production costs do not increase in comparison to conventional optical circuit boards. Aligning light that links from an optical fiber to an aligning port of the optical circuit board is returned to the optical fiber via the loop-back circuit. Therefore, alignment is possible using said returned light. In other words, alignment is possible while mounted on a package without having to install a light-reflecting film or mirror.