Authors:	M. Galarza, D. Van Thourhout, R. Baets, M. Lopez-Amo
Title:	Compact and highly-efficient polarization independent vertical resonant couplers for active-passive monolithic integration
Format:	International Journal
Publication date:	6/2008
Journal/Conference/Book:	Optics Express
Volume(Issue):	16(12) p.8350-8358
DOI:	10.1364/oe.16.008350
Citations:	19 (Dimensions.ai - last update: 3/11/2024) 12 (OpenCitations - last update: 3/5/2024) Look up on Google Scholar
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Abstract

Compact low-loss polarization independent vertical coupling between a 1.55 mu m InGaAsP bulk active waveguide and a passive waveguide based on bimodal interference is presented. Simulation results show low coupling loss (< 0.1 dB) over coupler lengths more than 5 times shorter than using the adiabatic design. The concept avoids submicron photolithographic features and shows acceptable fabrication tolerances.