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Temperature Measurement Sites

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
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Updated: May 3, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

Chalcogenide fiber-based distributed temperature sensor with sub-centimeter spatial resolution and enhanced accuracy.

Trung D Vo, Jiakun He, Eric Magi

|February 12, 2014

Summary

This summary is machine-generated.

This study presents a novel fiber-based distributed temperature sensor using chalcogenide fiber for enhanced accuracy and speed. The advanced sensor achieves precise temperature monitoring with reduced acquisition times, improving upon existing technologies.

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Area of Science:

Optics and Photonics
Materials Science
Sensor Technology

Background:

Distributed temperature sensing (DTS) is crucial for various industrial applications.
Traditional DTS systems often face limitations in spatial resolution, accuracy, and measurement speed.
Chalcogenide (ChG) fibers offer unique optical properties suitable for enhanced sensing.

Purpose of the Study:

To develop a fiber-based distributed temperature sensor with sub-centimeter spatial resolution.
To improve measurement accuracy and reduce acquisition time in temperature monitoring.
To leverage the properties of chalcogenide (ChG) As2S3 fiber for advanced sensing.

Main Methods:

Utilizing time domain analysis of backscattered Stokes and anti-Stokes photons.
Employing spontaneous Raman scattering in a chalcogenide (ChG) As2S3 fiber.
Investigating the impact of fiber properties (Raman coefficient, refractive index) on sensor performance.

Main Results:

Achieved sub-centimeter spatial resolution for distributed temperature sensing.
Demonstrated a temperature uncertainty of ± 0.65 °C with a 5-second measurement time.
Obtained a detection uncertainty of less than ± 0.2 °C with a 2-minute integration time.
Identified optimal Stokes and anti-Stokes bands for sensing performance.

Conclusions:

The developed ChG fiber-based DTS system offers superior performance in accuracy and speed.
Exploiting the high Raman coefficient and refractive index of ChG fiber significantly enhances sensor capabilities.
The sensor is suitable for applications requiring rapid and precise distributed temperature measurements.