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http://hdl.handle.net/10397/374
| Title: | FMCW multiplexing of fiber Bragg grating sensors | Authors: | Chan, PKC Jin, W Demokan, S |
Issue Date: | Sep-2000 | Source: | IEEE journal on selected topics in quantum electronics, Sept./Oct. 2000, v. 6, no. 5, p. 756-763 | Abstract: | We report on the use of frequency-modulated continuous wave (FMCW) techniques for multiplexing fiber Bragg grating (FBG) sensors. This technique is based on the modulation of light intensity from a broadband source by a linear swept-frequency RF carrier. Signals from the FBG sensors located at different positions in an array are separated in frequency domain and demodulated using a tunable optical filter. The potential and limitation of the technique are discussed. A three-sensor FMCW multiplexed FBG array of parallel topology and a six-sensor hybrid FMCW/WDM system were experimentally demonstrated with -30 dB crosstalk between sensors and 2 µε resolution in terms of root mean square (RMS) strain value. | Keywords: | Fiber Bragg grating sensors Frequency-modulated continuous wave Optical fiber sensors Strain measurements |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | IEEE journal on selected topics in quantum electronics | ISSN: | 1077-260X | EISSN: | 1558-4542 | DOI: | 10.1109/2944.892615 | Rights: | © 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| Appears in Collections: | Journal/Magazine Article |
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