Title

Harsh Environments Minimally Invasive Optical Sensor Using Free-Space Targeted Single-Crystal Silicon Carbide

Keywords

Harsh environment; High-temperature sensor; Optical interferometry; Optical sensor; Silicon carbide

Abstract

To the best of our knowledge, for the first time, a single-crystal silicon carbide (SiC)-based minimally invasive smart optical sensor suited for harsh environments has been designed and demonstrated. The novel sensor design is based on an agile wavelength source, instantaneous single-wavelength strong two-beam interferometry, full optical power cycle data acquisition, free-space targeted laser beams, multiple single-crystal-thick SiC optical front-end chips, and multiwavelength signal processing for unambiguous temperature measurements to form a fast and distributed smart optical sensor system. Experiments conducted using a 1550-nm eye-safe band-tunable laser and a 300-μm coating-free thick SiC chip demonstrate temperature sensing from room temperature to 1000°C with an estimated average 1.3°C resolution. Applications for the proposed sensor include use in fossil fuel-based power systems, aerospace/aircraft systems, satellite systems, deep-space exploration systems, and drilling and oil mining industries. © 2006 IEEE.

Publication Date

6-1-2006

Publication Title

IEEE Sensors Journal

Volume

6

Issue

3

Number of Pages

672-685

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/JSEN.2006.874447

Socpus ID

33746669580 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33746669580

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