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Journal Article Control of Linear Chirps in Waveguide Bragg Gratings by Applying Designed Core Profiles
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Authors
Min Su Kim, Jung Jin Ju, Seung Koo Park, Jae Yeob Shim, Myung Hyun Lee
Issue Date
2009-11
Citation
Journal of Lightwave Technology, v.27, no.21, pp.4809-4813
ISSN
0733-8724
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/JLT.2009.2025706
Abstract
Chirped gratings can be readily implemented in uniform-period waveguide Bragg gratings (WBGs) by adopting a tapered profile in the core patterning process. Based on our analysis, we have demonstrated that controlled linear chirps can be generated in WBGs with specifically designed core-taper profiles. By virtue of our established design and fabrication techniques, the measured center wavelengths, bandwidths, and dispersion coefficients of our fabricated straight and tapered polymeric WBGs agree very well with the designed values. We also obtained fairly low polarization-dependent wavelength shifts from the straight WBGs owing to the adopted low-birefringence polymeric materials. © 2009 IEEE.
KSP Keywords
Bragg grating(FBG), Chirped gratings, Design and fabrication, Dispersion coefficient, Fabrication techniques, Low polarization, Low-birefringence, Patterning process, Polymeric materials, Waveguide Bragg grating(WBG), polarization-dependent