Abstract
We demonstrate chirped Bragg gratings fabrication in doped microstructured tapered polymer fibers by using a uniform phase mask. The use of high photosensitive benzyl dimethyl ketal (BDK) doped core fiber allows to obtain chirped Bragg gratings by means of a single krypton fluoride laser pulse. The stability of the gratings has been confirmed and the strain and temperature sensitivity measurements demonstrate their tunable properties. Finally, different tapered profiles have been implemented in order to show the potentiality of this fabrication technique in polymer optical fibers.
Highlights
Chirped Bragg gratings are promising devices in optical fiber technology due to their wellknown applications such as dispersion compensation [1], beam forming [2], microwave photonics filtering [3] and a variety of sensing applications [4, 5]
To the best of our knowledge, in this paper we present the first chirped Bragg grating in Polymer optical fibers (POFs) fabricated by using a uniform phase mask
We demonstrated the fabrication of tunable chirped Bragg gratings in polymer optical fiber using a uniform phase mask for the first time to our knowledge
Summary
Chirped Bragg gratings are promising devices in optical fiber technology due to their wellknown applications such as dispersion compensation [1], beam forming [2], microwave photonics filtering [3] and a variety of sensing applications [4, 5]. The use of chirped phase mask is the most convenient way to fabricate chirped Bragg gratings by a single exposure process. This method offers high repeatability and easy implementation. The first chirped POFBG was successfully fabricated by using a chirped phase mask in 2017 [18] This latter result was obtained by using special phase masks, leading to expensive and fixed fabrication parameters. Flexible fabrication techniques based on uniform phase masks are required to be adopted as mass production of these optical components for different applications.
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