Monolithic integrated optic fiber Bragg grating sensor interrogator

Edgar A. Mendoza; Yan Esterkin; Cornelia Kempen; Songjian Sun

doi:10.1117/12.868158

29 April 2010 Monolithic integrated optic fiber Bragg grating sensor interrogator

Edgar A. Mendoza, Yan Esterkin, Cornelia Kempen, Songjian Sun

Proceedings Volume 7675, Photonics in the Transportation Industry: Auto to Aerospace III; 76750S (2010) https://doi.org/10.1117/12.868158
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

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-Transceiver^TM) 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.

Citation Download Citation

Edgar A. Mendoza, Yan Esterkin, Cornelia Kempen, and Songjian Sun "Monolithic integrated optic fiber Bragg grating sensor interrogator", Proc. SPIE 7675, Photonics in the Transportation Industry: Auto to Aerospace III, 76750S (29 April 2010); https://doi.org/10.1117/12.868158

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KEYWORDS

Fiber Bragg gratings

Sensors

Integrated optics

Waveguides

Photonic integrated circuits

Telecommunications

Transducers

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