30 May 2003 Coupling optical fibers to thin semiconductor waveguides
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Proceedings Volume 4997, Photonics Packaging and Integration III; (2003) https://doi.org/10.1117/12.479446
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States
Abstract
We present a novel type of grating-assisted coupler for coupling light from an optical fibre to a thin semiconductor waveguide. The Dual Grating-Assisted Directional Coupler (DGADC) consists of two gratings, one thick waveguide with a refractive index similar to the refractive index of the fibre, a thin semiconductor waveguide and a layer with refractive index which is between that of the thick and thin waveguides. Specifically, a coupler in silicon on insulator (SO!) has been analysed. The maximum coupling efficiency for this coupler can approach 1 00%, while the minimum coupling length can be around 2mm.
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Goran Z. Masanovic, Goran Z. Masanovic, Vittorio M. N. Passaro, Vittorio M. N. Passaro, Graham T. Reed, Graham T. Reed, } "Coupling optical fibers to thin semiconductor waveguides", Proc. SPIE 4997, Photonics Packaging and Integration III, (30 May 2003); doi: 10.1117/12.479446; https://doi.org/10.1117/12.479446
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