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Proceedings Paper

Giant-area fiber optic gyroscope with Raman-based temperature sensing for metrological applications
Author(s): G. Bolognini; C. Clivati; G. Costanzo; M. Frittelli; F. Levi; A. Mura; S. Schiller; D. Calonico
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Paper Abstract

In this paper we present a giant-area fiber-optic gyroscope (GAFOG) combining a Raman distributed temperature sensor (RDTS) for metrological monitoring of Earth rotation rate fluctuations. The GAFOG exhibits sensitivity limits in Earth rotation sensing associated to temperature variations along the fiber. Distributed temperature measurements providing an accurate fiber temperature mapping, enable tracking of the signal phase drifts. This allows reduction of the phase noise at low Fourier frequencies, and a corresponding enhancement of the Earth rotation rate variation sensitivity beyond the currently achieved 2•nrad/s for integration times of 1000 s.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915724 (2 June 2014); doi: 10.1117/12.2059316
Show Author Affiliations
G. Bolognini, Istituto per la Microelettronica e Microsistemi, CNR (Italy)
C. Clivati, Istituto Nazionale di Ricerca Metrologica (Italy)
G. Costanzo, Politecnico di Torino (Italy)
M. Frittelli, Istituto Nazionale di Ricerca Metrologica (Italy)
F. Levi, Istituto Nazionale di Ricerca Metrologica (Italy)
A. Mura, Istituto Nazionale di Ricerca Metrologica (Italy)
S. Schiller, Heinrich-Heine-Univ. Düsseldorf (Germany)
D. Calonico, Istituto Nazionale di Ricerca Metrologica (Italy)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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