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Lenses for Low-Loss Chip-to-Fiber and Fiber-to-Fiber Coupling Fabricated by 3D Direct-Write Lithography

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Abstract

We demonstrate low-loss coupling to single-mode fibers and photonic integrated circuits (PIC) using in-situ fabrication of free-form microlenses on device facets. Measured coupling losses down to 0.8 dB (0.5 dB) are achieved for chip-fiber (fiber-fiber) interfaces.

© 2016 Optical Society of America

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