Abstract
New branch in optoelectronics and photonics -- integrated optical circuits as a part of hybrid optical devices and the problems of coupling efficiency in optical interconnections (OI) -- is discussed. General approach to optical circuits analysis and adjustment based on classical optics is presented. The means to improve OI light efficiency in two regions -- far-field (Fraunhofer diffraction zone) free space and near-field (Fresnel diffraction zone) vicinity of micro-optical devices are proposed. New optical elements for OI -- fiber-end mounted microlenses, their design, computer simulation and fabrication technique are considered.
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