HLPG-Based Bandwidth-Enhanced Flat-Top Filter and Its Application to OAM Mode Converter

Zhang Meng,Taiga Suzuki,Hua Zhao,Chengliang Zhu,Peng Wang,Hongpu Li

2023 Opto-Electronics and Communications Conference (OECC)（2023）

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摘要

A bandwidth-enhanced flat-top OAM mode converter is proposed and demonstrated both theoretically and experimentally, which is realized by using a helical long-period fiber grating but operated at DTP wavelength of the L$\mathrm{P}_{1,10}$ mode.

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关键词

Flat-top band-rejection filter,helical long-period fiber grating,OAM mode converter

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