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Theoretical and Experimental Study on the Fabrication of Double Fiber Bragg Gratings

✍ Scribed by Wang Xiangyang; Liao Yanbiao; Zha Kaide

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
494 KB
Volume
3
Category
Article
ISSN
1068-5200

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✦ Synopsis

A new method for fabricating double fiber Bragg gratings at the same location on a fiber is described. Two series of refractive index change in a fiber, not similar to the normal fiber grating, have been realized by a Fresnel prism interferometer. As a result, the transmission spectrum of the fiber grating is widened, which is attributed to the chirp of the grating. If the exposure condition is controlled properly, then there are two obvious loss peaks in the transmission spectrum observed, which shows that the double fiber Bragg gratings exist in the fiber core. At the same time, a potential applicationᎏsimultaneous measurement of strain and temperature using this kind of gratingsᎏis analyzed.

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