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Compact low-loss vertical resonant mode coupling between two well-confined waveguides

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10 Author(s)
S. S. Saini ; Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD ; F. G. Johnson ; Z. Dilli ; Y. Hu
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The authors have achieved low-loss vertical mode transfer in an ultra-compact device between a 1.55 μm InGaAsP QW active waveguide and a well-confined passive waveguide using a 100 μm long taper. The radiation loss during the transfer was measured to be <0.3 dB. The device was fabricated using a single epitaxial growth and conventional fabrication schemes. This approach will lead to a new platform technology for integrating active and passive photonic devices

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Electronics Letters  (Volume:35 ,  Issue: 14 )