Premium
Refractive‐index sensor based on tilted fiber Bragg grating interacting with multimode fiber
Author(s) -
Jin Yongxing,
Dong Xinyong,
Gong Huaping,
Shen Changyu
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25178
Subject(s) - fiber bragg grating , materials science , optics , multi mode optical fiber , phosfos , cladding (metalworking) , refractive index , cladding mode , fiber optic sensor , graded index fiber , optoelectronics , optical power , polarization maintaining optical fiber , optical fiber , step index profile , laser , physics , metallurgy
A simple refractive‐index fiber sensor based on a tilted Bragg fiber grating (TFBG) interacting with multimode fiber (MMF) is described. The sensor structure is formed by insertion of a small section of MMF between the single‐mode fiber and the TFBG. The average reflective power in the cladding modes of the TFBG reflected a different power as the surrounding refractive index changes, while the power of the reflected Bragg mode keeps unchanged. Therefore, the power of the reflected Bragg mode can be used as a reference to compensate any possible fluctuation of the light source power. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1375–1377, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25178