Share Email Print
cover

Proceedings Paper

High-performance in-line Brillouin optical correlation domain analysis
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

We demonstrate a high-performance single-ended correlation-domain Brillouin sensor based on a phase modulation of Brillouin pump and a differential measurement scheme. Large DC noise induced by direct reflection of Brillouin pump was successfully removed by the phase modulation-based differential measurement as well as additional 4-fold enhancement in the spatial resolution. By applying an intentional loss to the end of a sensing fiber one of two correlation peaks within the fiber is suppressed, leading to double enlargement of the measurement range compared to former in-line reflector based systems. In the experimental confirmation a distributed strain measurement with a range of 100 m and a spatial resolution of 5 cm is presented.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91575X (2 June 2014); doi: 10.1117/12.2059168
Show Author Affiliations
Ji Ho Jeong, Korea Institute of Science and Technology (Korea, Republic of)
Kwang Yong Song, Chung-Ang Univ. (Korea, Republic of)
Sang Bae Lee, Korea Institute of Science and Technology (Korea, Republic of)
Kwanil Lee, Korea Institute of Science and Technology (Korea, Republic of)


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)

© SPIE. Terms of Use
Back to Top