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In-fiber single-polarization diffraction grating based on radiant tilted fiber grating

Qin, Huabao, He, Qinyun, Xing, Zhikun, Guo, Xi, Yan, Zhijun, Sun, Qizhen, Wang, Chao, Zhou, Kaiming, Liu, Deming, Zhang, Lin and others. (2019) In-fiber single-polarization diffraction grating based on radiant tilted fiber grating. Optics Letters, 44 (17). pp. 4407-4410. ISSN 0146-9592. (doi:10.1364/OL.44.004407) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided)

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Abstract

In this letter, we proposed an in-fiber single polarization diffraction grating based on a radiant tilted fiber grating (TFG), in which the s-polarization light could be diffracted from the fiber core to free space with the wavelength-dependent diffraction angle. For the first time, we have presented the theoretical model of angular dispersion of radiant TFG by employing Fourier optics analysis method. The angular dispersion of radiant TFG has been numerically characterized in terms of tilt angle, period and wavelength. In the experiment, we have measured the diffraction angles and angular dispersion of the radiant TFGs with tilt angles of 41°, 45° and 47° UVinscribed into single mode fiber, where the experimental results matched well with the simulation results. The simulation and experimental results have indicated that the diffraction light of radiant TFGs has a linear polarization state with over 0.99 degree of polarization at the tilt angle range from 41° to 47°.

Item Type: Article
DOI/Identification number: 10.1364/OL.44.004407
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Depositing User: Chao Wang
Date Deposited: 16 Oct 2019 14:56 UTC
Last Modified: 16 Oct 2019 15:36 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/77507 (The current URI for this page, for reference purposes)
Wang, Chao: https://orcid.org/0000-0002-0454-8079
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