Journal
OPTICS LETTERS
Volume 38, Issue 22, Pages 4609-4612Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.38.004609
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- Department of Energy (DOE)-National Energy Technology Laboratory (NETL) [DE-FE0001127]
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In this Letter, we report on a fiber-optic Fabry-Perot interferometric pressure sensor with its external diaphragm surface thinned and roughened by a femtosecond laser. The laser-roughened surface helps to eliminate outer reflections from the external diaphragm surface and makes the sensor immune to variations in the ambient refractive index. The sensor is demonstrated to measure pressure in a high-temperature environment with low-temperature dependence. (C) 2013 Optical Society of America
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