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Proceedings Paper

Precise, rugged spectrum-based calibration of distributed anti-stokes raman thermometry systems
Author(s): Amitabha Datta; Uvaraj Gajendran; Vinayak Srimal; Deepa Venkitesh; Balaji Srinivasan
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Paper Abstract

We report the development of a rugged calibration method based on the measurement of the spectral response of a distributed anti-Stokes Raman thermometry (DART) system. Due to the presence of a high level of Rayleigh scattered signal in the Stokes channel, we find that the temperature measurement may be more precise if we use the Rayleigh signal as reference for the anti-Stokes thermometry. Moreover, we find that the temperature measurement needs to be calibrated for the loss spectrum of the optical components used in the system. Based on such an algorithm, we have demonstrated a prototype which is capable of sensing temperatures up to 90 °C with an accuracy of 2 °C over distances up to 6.5 km with 8 m spatial resolution.

Paper Details

Date Published: 29 November 2011
PDF: 6 pages
Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83110E (29 November 2011); doi: 10.1117/12.904327
Show Author Affiliations
Amitabha Datta, Indian Institute of Technology Madras (India)
Uvaraj Gajendran, Indian Institute of Technology Madras (India)
Vinayak Srimal, Indian Institute of Technology Madras (India)
Deepa Venkitesh, Indian Institute of Technology Madras (India)
Balaji Srinivasan, Indian Institute of Technology Madras (India)


Published in SPIE Proceedings Vol. 8311:
Optical Sensors and Biophotonics III
Jürgen Popp, Editor(s)

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