Journal of Applied Sciences ›› 2018, Vol. 36 ›› Issue (1): 75-103.doi: 10.3969/j.issn.0255-8297.2018.01.005

• Optical Fiber Sensors Technology • Previous Articles     Next Articles

Tilted Fiber Bragg Grating Sensors

GUO Tuan1, LIU Fu1,2, SHAO Li-yang3   

  1. 1. Institute of Photonics Technology, Jinan University, Guangzhou 510632, China;
    2. Department of Electronics, Carleton University, Otrawa K1S5B6, Canada;
    3. Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong Province, China
  • Received:2017-05-24 Online:2018-01-31 Published:2018-01-31

Abstract:

By inducing a tilted angle between the grating and the normal direction of optical fibers, tilted fiber Bragg grating (TFBG) provides an effective means to lead the forward-propagating input light to the backward-propagating cladding modes and the core mode. Taking advantage of novel configurations and functional material coating, TFBG can be used as a powerful lab-on-fiber component for various measurements of mechanical, electrical, magnetic, biological, medical, and chemical parameters. In this paper, we present a brief review of TFBG sensing technology, including TFBG fabrication, mode coupling theory, sensing principle properties (especially the surface plasmon sensing technology). Recent progresses in various applications are discussed. These applications include mechanical sensing (bending, vibration, micro-displacement), electromagnetic sensing (electric field, magnetic field), biological sensing (cell density, protein, glucose) and chemical sensing (gas, electroactive microbe). Thanks to the multidisciplinary cooperation, especially the great progress of functional materials and nanotechnologies, the future of TFBG is promising in advanced and practical sensing.

Key words: tilted fiber Bragg grating, biochemical sensing, surface plasmon resonance, physical and mechanical sensing

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