FIBRE LASER SENSOR

A fiber laser sensor has a fiber laser (FL) with two reflectors in the form of a first and a second Bragg grating ( 4, 5 ) and a fiber segment ( 3 ) arranged in between. The first Bragg grating ( 4 ) is arranged in a temperature-sensitive fashion. The second Bragg grating is a chirped Bragg grating...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HAROUD, KARIM, DAENDLIKER, RENE, ROCHAT, ETIENNE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A fiber laser sensor has a fiber laser (FL) with two reflectors in the form of a first and a second Bragg grating ( 4, 5 ) and a fiber segment ( 3 ) arranged in between. The first Bragg grating ( 4 ) is arranged in a temperature-sensitive fashion. The second Bragg grating is a chirped Bragg grating ( 5 ) whose central wavelength is stabilized with regard to temperature changes. By means of this sensor, temperature and pressure can simultaneously be measured separately from one another, beat frequencies of orthogonal polarization eigenmodes of the fiber laser (FL) being a measure of the pressure and beat frequencies of longitudinal modes being a measure of the temperature.