All‐Fiber Optical Waveform Converter Based on Deformed Catenary Nanostructure

Herein, an optical waveform converter is presented by using a deformed catenary nanostructure at a double‐cladding fiber end. A vortex beam and Gaussian beam can be generated by wavelength modulation of the helical optical fiber grating fabricated in the double‐cladding fiber. Through the circular p...

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Autores principales: Wentao Zhang, Zhongyue Luo, Rui Wang, Xiaowen Jiang, Houquan Liu, Shijie Deng, Ming Chen, Libo Yuan, Hongchang Deng
Formato: article
Lenguaje:EN
Publicado: Wiley-VCH 2021
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Acceso en línea:https://doaj.org/article/46160f571b5d4afd904005e9fa006302
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Sumario:Herein, an optical waveform converter is presented by using a deformed catenary nanostructure at a double‐cladding fiber end. A vortex beam and Gaussian beam can be generated by wavelength modulation of the helical optical fiber grating fabricated in the double‐cladding fiber. Through the circular polarization modulation of the deformed catenary nanostructure, the generated beams can realize further various waveform conversions, forming several special beams with unique optical focusing, divergence, and rotation capabilities. Taking advantage of the combination of optical fiber integration and metasurface technologies, the device has broad application prospects in biomedicine, optical communication, optical manipulation, and optical imaging.