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http://hdl.handle.net/10397/4753
Title: | Femtosecond laser fabricated fiber Bragg grating in microfiber for refractive index sensing | Authors: | Fang, X Liao, C Wang, D |
Issue Date: | 1-Apr-2010 | Source: | Optics letters, 1 Apr. 2010, v. 35, no. 7, p. 1007-1009 | Abstract: | Fiber Bragg grating (FBG) is fabricated in the microfiber by the use of femtosecond laser pulse irradiation. Such a grating can be directly exposed to the surrounding medium without etching or thinning treatment of the fiber, thus possessing high refractive index (RI) sensitivity while maintaining superior reliability. The grating in the microfiber may have a number of propagation modes in its transmission spectrum, depending on the fiber diameter, and the higher order of mode has larger RI sensitivity. The RI sensitivity also depends on the fiber diameter and a smaller diameter corresponds to a large sensitivity. The maximum sensitivity obtained is ~231.4 nm per refractive index unit at the refractive index value of ~1.44 when the fiber diameter is ~2 μm. The FBG fabricated in the microfiber has high potential in various types of optical fiber sensor applications. | Keywords: | Fiber Bragg gratings Fiber optic components Fiber optic sensors Light refraction Optical fiber fabrication Optical fibers Pulsed laser applications Refractive index Refractometers Ultrashort pulses |
Publisher: | Optical Society of America | Journal: | Optics letters | ISSN: | 0146-9592 | EISSN: | 1539-4794 | DOI: | 10.1364/OL.35.001007 | Rights: | © 2010 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-7-1007. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
Appears in Collections: | Journal/Magazine Article |
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