Review of Helical Long-Period Fiber Gratings

In this paper, comprehensive remarks are given that focus on the main fabrications and wide applications of helical long-period fiber gratings (HLPGs). Firstly, the techniques of fabricating HLPGs by CO<sub>2</sub> laser, hydrogen–oxygen flame heating, and arc discharge are summarized. F...

Full description

Bibliographic Details
Main Authors: Chao Ma, Jian Wang, Libo Yuan
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Photonics
Subjects:
Online Access:https://www.mdpi.com/2304-6732/8/6/193