A low-cost fiber optic sensor system based on multimode fiber and an LED light source is presented. A multimode fiber Bragg grating (MMFBG) element is used as a strain sensor. In a matched grating scheme, a MMFBG similar to the sensing one was used as a reference in the receiving unit. For detection of large wavelength shift we demonstrated the feasibility of MMFBG wavelength detection using a single mode fiber fused coupler edge filter. The high cost normally associated with wavelength interrogators for single mode fiber FBG sensors was overcome by the utilization of a low cost multimode fiber pigtailed LED light source. The multimode fiber sensing system has the potential of maintaining much of the advantages of its single mode FBG sensor system counterparts. The MMFBG sensing schemes could be used for short distance, high sensitivity, high speed, strain, temperature and acoustic sensing applications.
|Title of host publication||Advanced sensor systems and applications II|
|Editors||Yun-Jiang Rao, Osuk Y. Kwon, Gang-Ding Peng|
|Number of pages||8|
|Publication status||Published - 8 Nov 2004|
|Event||Advanced Sensor Systems and Applications II - , United Kingdom|
Duration: 28 Feb 2005 → …
|Conference||Advanced Sensor Systems and Applications II|
|Period||28/02/05 → …|
Bibliographical noteTongyu Liu ; Daorui Wang ; Rasool Raenaei ; Xianfeng Chen ; Lin Zhang and Ian Bennion, "A low-cost multimode fiber Bragg grating sensor system", Proc. SPIE 5634, Advanced Sensor Systems and Applications II, 54 (February 28, 2005); doi:10.1117/12.576055.
Copyright 2004 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
- low-cost fiber optic sensor system
- multimode fiber
- LED light source
- multimode fiber Bragg grating
- strain sensor
- wavelength shift
- wavelength detection
- single mode fiber fused coupler edge filter
- wavelength interrogators
- single mode fiber FBG sensors
- multimode fiber pigtailed LED light source
- multimode fiber sensing system