Global optimization of multimode interference structure for ratiometric wavelength measurement

Qian Wang; Gerald Farrell; Agus Muhamad Hatta

doi:10.1117/12.738676

2 July 2007 Global optimization of multimode interference structure for ratiometric wavelength measurement

Qian Wang, Gerald Farrell, Agus Muhamad Hatta

Proceedings Volume 6619, Third European Workshop on Optical Fibre Sensors; 66192M (2007) https://doi.org/10.1117/12.738676
Event: Third European Workshop on Optical Fibre Sensors, 2007, Napoli, Italy

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.

Citation Download Citation

Qian Wang, Gerald Farrell, and Agus Muhamad Hatta "Global optimization of multimode interference structure for ratiometric wavelength measurement", Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192M (2 July 2007); https://doi.org/10.1117/12.738676

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