TY - JOUR
T1 - In-fiber single-polarization diffraction grating based on radiant tilted fiber grating
AU - Qin, Huabao
AU - He, Qinyun
AU - Xing, Zhikun
AU - Guo, Xi
AU - Yan, Zhijun
AU - Sun, Qizhen
AU - Wang, Chao
AU - Zhou, Kaiming
AU - Liu, Deming
AU - Zhang, Lin
N1 - This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: https://doi.org/10.1364/OL.44.004407. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
PY - 2019/8/29
Y1 - 2019/8/29
N2 - In this Letter, we propose 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 a radiant TFG by employing the Fourier optics analysis method. The angular dispersion of the 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° UV-inscribed 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°.
AB - In this Letter, we propose 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 a radiant TFG by employing the Fourier optics analysis method. The angular dispersion of the 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° UV-inscribed 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°.
UR - http://www.scopus.com/inward/record.url?scp=85071398088&partnerID=8YFLogxK
UR - https://www.osapublishing.org/ol/abstract.cfm?uri=ol-44-17-4407
U2 - 10.1364/OL.44.004407
DO - 10.1364/OL.44.004407
M3 - Article
AN - SCOPUS:85071398088
SN - 0146-9592
VL - 44
SP - 4407
EP - 4410
JO - Optics Letters
JF - Optics Letters
IS - 17
ER -