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Proceedings Paper

Model of Bragg grating written in subwavelength-diameter fiber taper
Author(s): Ping Zhao; Jihua Zhang; Zhao Wu; Xinliang Zhang
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Paper Abstract

We come up with a model of subwavelength-diameter fiber taper-based Bragg gratings (SWDFT-BGs) and numerically investigated the chirp characteristics of Bragg gratings written in local single-mode fiber tapers based on coupled-mode theory and transfer matrix method. The effective modal refractive index varies along adiabatic subwavelength-diameter fiber tapers (SWDFTs), which results in an effective chirp in grating period. Additionally, SWDFT-BGs with full width at half maximum (FWHM) up to 4.9 nm and time-delay slope over 25 ps/nm were achieved in simulations. This offers an idea for fabricating single-mode chirped fiber Bragg gratings using uniform phase-mask and paves ways for waveguide dispersion engineering and wide-bandwidth optical filters.

Paper Details

Date Published: 29 November 2011
PDF: 5 pages
Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 830720 (29 November 2011); doi: 10.1117/12.904662
Show Author Affiliations
Ping Zhao, Huazhong Univ. of Science and Technology (China)
Jihua Zhang, Huazhong Univ. of Science and Technology (China)
Zhao Wu, Huazhong Univ. of Science and Technology (China)
Xinliang Zhang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8307:
Passive Components and Fiber-Based Devices VIII
Bishnu P. Pal, Editor(s)

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