@inproceedings{ea72cacdc23b494bb7da74ab049bb007,
title = "Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing",
abstract = "The performance of an optical time-domain sensing technique, employing the slope of Brillouin dynamic gratings in polarization-maintaining fibers, can be significantly enhanced using Golay complementary sequences. The strain sensitivity of the reflectivity of a coded probe primarily depends on the detuning between the orthogonally polarized pumps, which generated the grating. The system broadband sensitivity for a 256 bit unipolar probe code was demonstrated to be 50nε/√Hz at a sampling rate of 2MHz, which to the best of our knowledge is a record sensitivity for Brillouin dynamic sensing. We report the measurement of 10kHz strain vibrations (which is the bandwidth limit of the vibration source) with a spatial resolution of 2cm. Owing to the system high sensitivity and spatial resolution, it has the potential to be used in distributed ultrasonic detection applications.",
keywords = "Brillouin dynamic grating, Fiber-optic sensors, complementary-correlation coding, nonlinear optics",
author = "A. Bergman and T. Langer and M. Tur",
note = "Publisher Copyright: {\textcopyright} 2015 Copyright SPIE.; 5th Asia-Pacific Optical Sensors Conference, APOS 2015 ; Conference date: 20-05-2015 Through 22-05-2015",
year = "2015",
doi = "10.1117/12.2185279",
language = "אנגלית",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Byoungho Lee and Yunjiang Rao and Lee, \{Sang Bae\}",
booktitle = "Fifth Asia-Pacific Optical Sensors Conference, APOS 2015",
address = "ארצות הברית",
}