1 March 2004 Sol-gel-derived 4×4 multimode interference coupler: optimization and fabrication
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Abstract
The design and fabrication of a 4×4 multimode interference (MMI) coupler is reported. A photopatternable organic-inorganic sol-gel on silica-on-silicon is adopted for the device fabrication. Optimization of waveguide parameters led to the coupler excess loss below 1 dB and power imbalance below 0.2 dB. An optical 90-deg hybrid based on the coupler is realized and tested. The experimental data are in very good agreement with predicted simulation results, demonstrating the simplicity and exactness of the sol-gel method as an advantageous fabrication route in integrated optics.
© (2004) Society of Photo-Optical Instrumentation Engineers (SPIE)
Oleg V. Mishechkin, Oleg V. Mishechkin, Mahmoud Fallahi, Mahmoud Fallahi, } "Sol-gel-derived 4×4 multimode interference coupler: optimization and fabrication," Optical Engineering 43(3), (1 March 2004). https://doi.org/10.1117/1.1646180 . Submission:
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