28 August 2013 Arc-induced long-period fiber gratings inscribed in asymmetric transition tapers
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Optical Engineering, 52(8), 086111 (2013). doi:10.1117/1.OE.52.8.086111
Long-period fiber gratings (LPFGs) and tapered fibers are spectrally selective devices with important applications in sensing, especially for monitoring chemical and physical parameters. When combined, they can give rise to devices with enhanced characteristics that can be tailored by varying their fabrication parameters. We analyze the characteristics of arc-induced LPFGs written on the longer transition of asymmetric tapers, which provide a variable diameter section whose slope can be adjusted in order to tailor the device performance. In comparison with LPFGs fabricated in nontapered fibers, the grating inscription in the linear taper transition produces deeper notches (<20  dB ), whose bandwidth and separation increase with the transition slope. The simplicity of the electric arc technique to fabricate LPFGs, and the degrees of freedom added by the tapered fiber open up the possibility to realize thorough studies on the many possible combinations, to develop devices with characteristics designed on purpose.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Alejandro Martínez-Rios, Guillermo Salceda-Delgado, David Monzón-Hernández, Gilberto Anzueto-Sánchez, "Arc-induced long-period fiber gratings inscribed in asymmetric transition tapers," Optical Engineering 52(8), 086111 (28 August 2013). https://doi.org/10.1117/1.OE.52.8.086111

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