| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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A Practical Approach to Synthesize Multi-channel Fiber Bragg Grating with Right-Angled Triangular Spectrum |
| YU Xue-Lian1,2, YAO Yong1**, XIAO Jun-Jun1, TIAN Jia-Jun1 |
1School of Electronic and Information Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055
2Department of Optics Information Science and Technology, Harbin University of Science and Technology, Harbin 150080
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| Cite this article: |
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YU Xue-Lian, YAO Yong, XIAO Jun-Jun et al 2012 Chin. Phys. Lett. 29 114211 |
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Abstract A novel approach is proposed towards the design of fiber Bragg gratings with multi-channel right-angled triangular spectrum. Firstly, a single-channel grating is synthesized utilizing an adaptive quantum particle swarm optimization with the piecewise constant mutated factor. Meanwhile, the reflectivity spectrum with good linear edge for a short grating is obtained. Then, for its merits of easy fabrication, the superposition method is adopted to design multi-channel gratings with initial spectral distortion. Finally, this distortion is optimized by the method in the first step. It is shown that the design outcomes still retain the features of easy fabrication and short length. Such gratings would be useful as wavelength-interrogation devices with multiple physical parameters in optical sensor systems.
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Received: 22 May 2012
Published: 28 November 2012
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