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Proceedings Paper

High spatial resolution OFDR based on broadened optical frequency sweeping by four-wave-mixing
Author(s): Dan Xu; Jiangbing Du; Xinyu Fan; Qingwen Liu; Zuyuan He
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Paper Abstract

We demonstrate a method for high spatial resolution optical frequency domain reflectometry (OFDR) by utilizing degenerated four-wave-mixing (FWM) for broadening the frequency sweeping. High order sideband is obtained from an optical comb and is consequently utilized as the pump for the FWM. An idler wavelength is produced after the FWM and 21-times broadened optical frequency sweeping is achieved compared with the radio frequency (RF) sweeping. 0.75-cm spatial resolution is obtained with RF frequency sweeping span of 638.4 MHz.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91576J (2 June 2014); doi: 10.1117/12.2059470
Show Author Affiliations
Dan Xu, Shanghai Jiao Tong Univ. (China)
Jiangbing Du, Shanghai Jiao Tong Univ. (China)
Xinyu Fan, Shanghai Jiao Tong Univ. (China)
Qingwen Liu, Shanghai Jiao Tong Univ. (China)
Zuyuan He, Shanghai Jiao Tong Univ. (China)

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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