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Proceedings Paper

Global optimization of multimode interference structure for ratiometric wavelength measurement
Author(s): Qian Wang; Gerald Farrell; Agus Muhamad Hatta
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Paper Abstract

The multimode interference structure is conventionally used as a splitter/combiner. In this paper, it is optimised as an edge filter for ratiometric wavelength measurement, which can be used in demodulation of fiber Bragg grating sensing. The global optimization algorithm-adaptive simulated annealing is introduced in the design of multimode interference structure including the length and width of the multimode waveguide section, and positions of the input and output waveguides. The designed structure shows a suitable spectral response for wavelength measurement and a good fabrication tolerance.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192M (2 July 2007); doi: 10.1117/12.738676
Show Author Affiliations
Qian Wang, Dublin Institute of Technology (Ireland)
Gerald Farrell, Dublin Institute of Technology (Ireland)
Agus Muhamad Hatta, Dublin Institute of Technology (Ireland)


Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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