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1. (WO2018043289) CHIRPED FIBER GRATING ELEMENT AND FIBER LASER

Pub. No.:    WO/2018/043289    International Application No.:    PCT/JP2017/030366
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Aug 25 01:59:59 CEST 2017
IPC: G02B 6/02
H01S 3/067
Applicants: FUJIKURA LTD.
株式会社フジクラ
Inventors: SAKAMOTO, Shinichi
阪本 真一
Title: CHIRPED FIBER GRATING ELEMENT AND FIBER LASER
Abstract:
The present invention achieves a chirped fiber grating element with less heat generation in the vicinity of an incident end surface than the conventional. Along with making a grating (11a) pitch Λi become larger with increasing distance from one end surface (1A), the difference Δni in index of refraction for the grating (11a) increases with increasing distance from the end surface (1A).