Abstract
We demonstrate a novel technique to realize a long-distance fiber sensor system based on the second-order Raman pump and amplification. With the second-order Raman pump and amplification, a gain spectrum around 1582-nm is achieved. It serves as not only the optical source for the remote fiber sensor but also the filter to intensity modulated the wavelength shift of the fiber sensor. A long-distance fiber strain sensor system is demonstrated by adopting a fiber Fabry-Pérot sensor. Experimental results show that the wavelength shift of the sensor in response to the strain is simultaneously intensity modulated by the steep slope with a high sensitivity, while it is temperature insensitive. With the side gain spectrum served as a quasi-linear filter, the sensor can also be quasi-linearly intensity-modulated.
Original language | English |
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Pages (from-to) | 57-60 |
Number of pages | 4 |
Journal | Applied Physics B: Lasers and Optics |
Volume | 108 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jul 2012 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- General Physics and Astronomy