Abstract

A birefringence-balanced polarimetric multimode fiber temperature sensor is proposed and demonstrated. Two single-crystal sapphire rods are incorporated into the sensor head. They are connected end to end in such a way that the slow axis of the first rod is aligned with the fast axis of the second rod, referred to as the referencing rod. Since the lengths of the two rods are chosen to be almost the same, the original birefringence of the first rod is balanced by that of the second rod. A light-emitting diode serves as the light source. This sensor has been experimentally demonstrated for high-temperature measurements as high as 1500°C. A sensitivity of 5°C has been obtained.

© 1992 Optical Society of America

Birefringence-balanced polarimetric optical fiber sensor for high-temperature measurements: erratum

Anbo Wang, George Z. Wang, Kent A. Murphy, and Richard O. Claus
Opt. Lett. 17(24) 1821-1821 (1992)

Sapphire-fiber-based intrinsic Fabry–Perot interferometer

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Advances in sapphire-fiber-based intrinsic interferometric sensors

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