Advances on Mode-Coupling Theories, Fabrication Techniques, and Applications of the Helical Long-Period Fiber Gratings: A Review

In this paper, we have briefly review the developing history and recent advances made with regard to helical long-period fiber gratings (HLPGs) in three aspects, i.e., the mode-coupling theories, the fabrication techniques, and the applications. It is shown that, due to the intrinsic helicity charac...

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Autori principali:	Hua Zhao, Hongpu Li
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	MDPI AG 2021-04-01
Serie:	Photonics
Soggetti:	chiral fiber grating helical long-period fiber grating torsion sensor flat-top band-rejection filter orbital angular momentum spin angular momentum
Accesso online:	https://www.mdpi.com/2304-6732/8/4/106
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