论文成果
Tuning operating point of extrinsic Fabry-Perot interferometric fiber-optic sensors using microstructured fiber and gas pressure
- 点击次数：
- 论文类型：期刊论文
- 发表时间：2012-11-15
- 发表刊物：OPTICS LETTERS
- 收录刊物：SCIE、EI、Scopus
- 文献类型：J
- 卷号：37
- 期号：22
- 页面范围：4672-4674
- ISSN号：0146-9592
- 摘要：Intensity-based demodulation of extrinsic Fabry-Perot interferometric (EFPI) fiber-optic sensors requires the light wavelength to be on the quadrature point of the interferometric fringes for maximum sensitivity. In this Letter, we propose a novel and remote operating-point tuning method for EFPI fiber-optic sensors using microstructured fibers (MFs) and gas pressure. We demonstrated the method using a diaphragm-based EFPI sensor with a microstructured lead-in fiber. The holes in the MF were used as gas channels to remotely control the gas pressure inside the Fabry-Perot cavity. Because of the deformation of the diaphragm with gas pressure, the cavity length and consequently the operating point can be remotely tuned for maximum sensitivity. The proposed operating-point tuning method has the advantage of reduced complexity and cost compared to previously reported methods. (C) 2012 Optical Society of America
