Polarization-Resolved Near- and Far-Field Radiation from Near-Infrared Tilted Fiber Bragg Gratings

Author

Changyu Shen ; Lingyun Xiong ; Bialiayeu, Aliaksander ; Yang Zhang ; Albert, J.

Author_Institution

Inst. of Optoelectron. Technol., China Jiliang Univ., Hangzhou, China

Volume

32

Issue

11

fYear

2014

fDate

41791

Firstpage

2157

Lastpage

2162

Abstract

The radiation pattern of near-infrared light from 10° tilted fiber Bragg gratings is measured as a function of position along the grating, azimuthal direction, and input light polarization. An anomalous spatial periodicity in the radiation pattern is found and assigned to the presence of imperfect zero-order nulling and on the uncertainty in the exact alignment between the optical fiber and the phase mask used to form the grating. Furthermore, the intensity of the radiated light is correlated with the transmission spectrum of the tilted grating, showing narrowband spectral regions of increased and decreased radiation.

Keywords

Bragg gratings; infrared spectra; masks; optical fibre polarisation; optical fibre testing; anomalous spatial periodicity; azimuthal direction; input light polarization; narrowband spectral regions; near-infrared light; near-infrared tilted fiber Bragg gratings; phase mask; polarization-resolved far-field radiation; polarization-resolved near-field radiation; radiated light intensity; transmission spectrum; zero-order nulling; Fiber gratings; Gratings; Optical fiber polarization; Optical fiber sensors; Optical fiber theory; Polarization; radiation; tilted fiber Bragg gratings (TFBGs);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2319831

Filename

6805150