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Proceedings Paper

Monolithic integrated optic fiber Bragg grating sensor interrogator
Author(s): Edgar A. Mendoza; Yan Esterkin; Cornelia Kempen; Songjian Sun
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Paper Abstract

Fiber Bragg gratings (FBGs) are a mature sensing technology that has gained rapid acceptance in civil, aerospace, chemical and petrochemical, medicine, aviation and automotive industries. Fiber Bragg grating sensors can be use for a variety of measurements including strain, stress, vibration, acoustics, acceleration, pressure, temperature, moisture, and corrosion distributed at multiple locations within the structure using a single fiber element. The most prominent advantages of FBGs are: small size and light weight, multiple FBG transducers on a single fiber, and immunity to radio frequency interference. A major disadvantage of FBG technology is that conventional state-of-the-art fiber Bragg grating interrogation systems are typically bulky, heavy, and costly bench top instruments that are assembled from off-the-shelf fiber optic and optical components integrated with a signal electronics board into an instrument console. Based on the need for a compact FBG interrogation system, this paper describes recent progress towards the development of a miniature fiber Bragg grating sensor interrogator (FBG-TransceiverTM) system based on multi-channel monolithic integrated optic sensor microchip technology. The integrated optic microchip technology enables the monolithic integration of all of the functionalities, both passive and active, of conventional bench top FBG sensor interrogators systems, packaged in a miniaturized, low power operation, 2-cm x 5-cm small form factor (SFF) package suitable for the long-term structural health monitoring in applications where size, weight, and power are critical for operation.

Paper Details

Date Published: 29 April 2010
PDF: 10 pages
Proc. SPIE 7675, Photonics in the Transportation Industry: Auto to Aerospace III, 76750S (29 April 2010); doi: 10.1117/12.868158
Show Author Affiliations
Edgar A. Mendoza, Redondo Optics, Inc. (United States)
Yan Esterkin, Redondo Optics, Inc. (United States)
Cornelia Kempen, Redondo Optics, Inc. (United States)
Songjian Sun, Redondo Optics, Inc. (United States)

Published in SPIE Proceedings Vol. 7675:
Photonics in the Transportation Industry: Auto to Aerospace III
Alex A. Kazemi; Bernard C. Kress; Eric Y. Chan, Editor(s)

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