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1. (WO2018198511) OPTICAL RECEIVER AND OPTICAL COMMUNICATION DEVICE

Pub. No.:    WO/2018/198511    International Application No.:    PCT/JP2018/006756
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Feb 24 00:59:59 CET 2018
IPC: G02B 6/26
G02B 6/43
Applicants: NIPPON SHEET GLASS COMPANY, LIMITED
日本板硝子株式会社
Inventors: TSUNETOMO Keiji
常友 啓司
KUSAKA Satoru
日下 哲
Title: OPTICAL RECEIVER AND OPTICAL COMMUNICATION DEVICE
Abstract:
This optical receiver 20 receives, with a light-receiving element 21, a light beam having a spiral wave surface propagated through a multimode fiber 30. The optical receiver 20 is provided with a receiving side vortex optical element 24 disposed between the multimode fiber 30 and the light-receiving element 21.