Gas Refractometer Based on Optical Fiber Extrinsic Fabry—Perot Interferometer With Open Cavity
- 31 October 2014
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 27 (3) , 245-248
Abstract
In this letter, we proposed a gas refractometer based on optical fiber Fabry-Perot interferometer with an open cavity. The Fabry-Perot cavity is a short section capillary tube spliced between a single-mode fiber and a side-hole fiber (SHF). The unique cladding of the SHF enables gas entering or leaving the Fabry-Perot cavity freely. The measurement of pressure-induced refractive index change of nitrogen gas has been demonstrated by monitoring the wavelength shift of the interference pattern. The robust and microsize architecture make the interferometer a good candidate for gas sensing applications.Keywords
Funding Information
- National Natural Science Foundation of China (61327012, 61275088, 61077060)
- National High Technology Research and Development (863 Program) (2009AA06Z203)
- Ministry of Education Project of Science and Technology Innovation (Z08119)
- Ministry of Science and Technology Project of International Cooperation (2008CR1063)
- Shaanxi Province Project of Science and Technology Innovation (2009ZKC01-19)
This publication has 10 references indexed in Scilit:
- Long-period grating and its cascaded counterpart in photonic crystal fiber for gas phase measurement.Optics Express, 2012
- Gas refractometry based on an all-fiber spatial optical filterOptics Letters, 2012
- Simultaneous measurement of partial pressure of O_2 and CO_2 with a hybrid interferometerOptics Letters, 2012
- Numerical and experimental investigation of long-period gratings in photonic crystal fiber for refractive index sensing of gas mediaOptics Letters, 2012
- Gas refractometry using a hollow-core photonic bandgap fiber in a Mach-Zehnder-type interferometerApplied Physics Letters, 2012
- In-fiber Mach–Zehnder interferometer formed by large lateral offset fusion splicing for gases refractive index measurement with high sensitivitySensors and Actuators B: Chemical, 2011
- Fabry–Perot cavity based on a diaphragm-free hollow-core silica tubeOptics Letters, 2011
- Monitoring changes in the refractive index of gases by means of a fiber optic Fabry-Perot interferometer sensorSensors and Actuators A: Physical, 2005
- Fiber-Optic Fabry-Perot Interferometer and its Sensor ApplicationsIEEE Transactions on Microwave Theory and Techniques, 1982
- Refractive Index of Nitrogen, Water Vapor, and Their Mixtures at Submillimeter WavelengthsApplied Optics, 1971