Precise optical differential thermometer sensor based on interferometric measurement of thermal expansion coefficient

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F14%3A00217824" target="_blank" >RIV/68407700:21230/14:00217824 - isvavai.cz</a>

Result on the web

<a href="http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1873850" target="_blank" >http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1873850</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2054346" target="_blank" >10.1117/12.2054346</a>

Result language

angličtina

Original language name

Precise optical differential thermometer sensor based on interferometric measurement of thermal expansion coefficient

Original language description

Knowing a thermal expansion coefficient and measured exact thermal expansion, it is possible to design a very sensitive sensor measuring temperature differential. A Michelson interferometer is used to determine temperature changes. It measures linear expansion on a metal object, e.g. a copper rod, as a change in length in response to a change in temperature. Based on the obtained interferograms and knowing the value of thermal expansion coefficient, temperature differential can be calculated. The accuracy of the procedure can be determined by using the exact differential method based on the measurement errors for linear expansion, and initial length. The contribution of this paper is the employment of Michelson interferometer to design a very sensitivedifferential thermometer measuring with the accuracy of one thousandth degree Celsius. It results from the achieved precision of measuring the optical path length changes in the range of hundreds nanometers. The advantage of this sensor

Czech name

—

Czech description

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Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

—

Project

<a href="/en/project/VG20102015053" target="_blank" >VG20102015053: The modern structure of photonic sensors and new innovative principles for intrusion detection systems, integrity and protection of critical infrastructure ? GUARDSENSE</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Optical Sensing and Detection III

ISBN

9781628410891

ISSN

—

e-ISSN

—

Number of pages

9

Pages from-to

—

Publisher name

SPIE

Place of publication

Bellingham

Event location

Brusel, Belgie

Event date

Apr 14, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000343125200057