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Temperature Measurement Sites

Temperature Measurement Sites

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.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...

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Updated: Mar 27, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Sourceless optical fiber high temperature sensor.

Zhipeng Tian, Zhihao Yu, Bo Liu

|January 15, 2016

Summary

This summary is machine-generated.

A novel sapphire fiber extrinsic Fabry-Perot interferometer enables ultrahigh temperature sensing up to 1593°C. This compact, low-cost sensor achieves a 1°C resolution for extreme environment applications.

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Last Updated: Mar 27, 2026

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Published on: October 24, 2018

Area of Science:

Optics and Photonics
Materials Science
Sensor Technology

Background:

Accurate temperature measurement in extreme environments is crucial for industrial and scientific applications.
Existing sensors often face limitations in high-temperature stability, cost, or complexity.

Purpose of the Study:

To develop a novel, sourceless sapphire fiber extrinsic Fabry-Perot interferometer (EFPI) for ultrahigh temperature sensing.
To demonstrate the sensor's performance and suitability for extreme conditions.

Main Methods:

Fabrication of an EFPI sensor using a sapphire wafer at the tip of a sapphire fiber to form the Fabry-Perot cavity.
Utilizing thermal radiation transmitted through the wafer as the interference signal source.
Guiding the interference signal via sapphire and silica fibers to a spectrometer for analysis.

Main Results:

The developed sensor system is compact and cost-effective.
Experimental testing demonstrated successful ultrahigh temperature sensing up to 1593°C.
A high resolution of approximately 1°C was achieved.

Conclusions:

The sapphire fiber EFPI is a promising technology for ultrahigh temperature sensing.
The sensor's design offers a robust, low-cost solution for extreme environments.
Further research can explore its integration into various industrial monitoring systems.