All-fiber absolute temperature sensor using an unbalanced high-birefringence Sagnac loop.

All-fiber absolute temperature sensor using an unbalanced high-birefringence Sagnac loop. Research Abstract Details 

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All-fiber absolute temperature sensor using an unbalanced high-birefringence Sagnac loop. Abstract Text:

E De la Rosa,L A Zenteno,A N Starodumov,D Monzon,

We demonstrate a highly sensitive temperature sensor based on a stress-induced high-birefringence-fiber Sagnac loop that uses a Nd-doped-fiber amplified spontaneous emission source. Relative temperature sensing is done in the spectral domain by shifts of a resonant wavelength lambda(r) and absolute temperature sensing by changes in separation between resonances Dlambda . The measured relative change of these parameters with temperature in the range 15-110 degrees C, is (1/lambda(r))(deltalambda(r)/deltaT) = -(1/Dlambda)(deltaDlambda/delta T) approximately (1/Dn)(delta Dn/deltaT)(-0.94 +/- 0.02) x 10(-3)/K, with measured fiber birefringence Dn = 8 x 10(-4) . This gives a wavelength-shift sensitivity of -1.00 nm/K at 1.065 microm and a resonance separation sensitivity of 0.006 nm/K for Dlambda = 6.8 nm . This telemetric point sensor has a loop length of 80 m, an operational bandwidth of more than 50 nm, and a temperature accuracy of better than 1 degrees C.

All-fiber absolute temperature sensor using an unbalanced high-birefringence Sagnac loop. Publishing Authors By Initials

E De la Rosa,LA Zenteno,AN Starodumov,D Monzon,

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All-fiber absolute temperature sensor using an unbalanced high-birefringence Sagnac loop. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Optics letters

VOLUME: 22

Page Numbers: 481-3

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ISSN: 0146-9592

DAY: 1

MONTH: Apr

YEAR: 1997

All-fiber absolute temperature sensor using an unbalanced high-birefringence Sagnac loop. Information

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LANGUAGE: eng

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Country: United States

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MEDLINETA: Opt Lett

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