3D nanoprinting of mode-field conversion tapers for low-loss optical interfacing of single-mode fibers and photonic integrated circuits

J. Van Erps; K. Vanmol; T. Baghdasaryan; N. Vermeulen; H. Thienpont

doi:10.1117/12.2579192

5 March 2021 3D nanoprinting of mode-field conversion tapers for low-loss optical interfacing of single-mode fibers and photonic integrated circuits

J. Van Erps, K. Vanmol, T. Baghdasaryan, N. Vermeulen, H. Thienpont

Author Affiliations +

Proceedings Volume 11692, Optical Interconnects XXI; 116920M (2021) https://doi.org/10.1117/12.2579192
Event: SPIE OPTO, 2021, Online Only

Abstract

We present our latest results on the design and fabrication of mode-field conversion tapers for low-loss optical interconnects. These structures are fabricated by means of two-photon polymerization-based 3D nanoprinting. We experimentally demonstrate that our 3D nanoprinted downtapers outperform conventional lensed fibers for low-loss edge coupling of single-mode fibers with SOI, Si₃N₄ and InP-based photonic integrated circuits. They are also more robust as they allow butt coupling rather than free-space coupling. Non-linear taper profiles allow shortening the length of the downtapers while keeping their performance. We also demonstrate 3D nanoprinted uptapers that allow for relaxation of the lateral misalignment tolerances.

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J. Van Erps, K. Vanmol, T. Baghdasaryan, N. Vermeulen, and H. Thienpont "3D nanoprinting of mode-field conversion tapers for low-loss optical interfacing of single-mode fibers and photonic integrated circuits", Proc. SPIE 11692, Optical Interconnects XXI, 116920M (5 March 2021); https://doi.org/10.1117/12.2579192

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