MEASUREMENTS OF FUNDAMENTAL THERMAL INDUCED PHASE FLUCTUATIONS IN THEFIBER OF A SAGNAC INTERFEROMETER

Authors
KNUDSEN S TVETEN AB DANDRIDGE A
Citation
S. Knudsen et al., MEASUREMENTS OF FUNDAMENTAL THERMAL INDUCED PHASE FLUCTUATIONS IN THEFIBER OF A SAGNAC INTERFEROMETER, IEEE photonics technology letters, 7(1), 1995, pp. 90-92
Citations number
10
Categorie Soggetti
Optics,"Physics, Applied
Journal title
IEEE photonics technology letters → ACNP
ISSN journal
10411135
Volume
7
Issue
1
Year of publication
1995
Pages
90 - 92
Database
ISI
SICI code
1041-1135(1995)7:1<90:MOFTIP>2.0.ZU;2-D
Abstract
We demonstrate measurements of fundamental thermal induced phase fluct uations in the fiber-loop of a Sagnac interferometer. Loop lengths of 1.1 and 2.2 km are considered, showing phase noise levels between simi lar to 0.2-1.4 mu rad rms/root Hz in the frequency range 1-100 kHz. Go od agreement between theory and experiment is demonstrated. We show th at the frequency dependent noise door can have a considerable impact o n threshold detection's for a Sagnac based sensor for detection of rec iprocal measurands, as well as on the random walk coefficient in fiber optic gyroscopes.