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Spectral Characteristics of Square-Wave-Modulated Type II Long-Period Fiber Gratings Inscribed by a Femtosecond Laser

We study here the spectral characteristics of square-wave-modulated type II long-period fiber gratings (LPFGs) inscribed by a femtosecond laser. Both theoretical and experimental results indicate that higher-order harmonics refractive index (RI) modulation commonly exists together with the fundament...

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Detalles Bibliográficos
Autores principales:	Zhao, Xiaofan, Li, Hongye, Rao, Binyu, Wang, Meng, Wu, Baiyi, Wang, Zefeng
Formato:	Online Artículo Texto
Lenguaje:	English
Publicado:	MDPI 2021
Materias:	Communication
Acceso en línea:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8126127/ https://www.ncbi.nlm.nih.gov/pubmed/34068560 http://dx.doi.org/10.3390/s21093278

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