Compact Edge-Coupler for Broadband and High-Efficient Fiber-to-Waveguide Coupling Using Cascaded Silicon Nitride Tapers

Bishal Bhandari; Chul-Soon Im; Min-Cheol Oh; Sang-Shin Lee; Sang-Shin Lee

doi:10.1364/OECC.2021.W2C.2

26th Optoelectronics and Communications Conference
OSA Technical Digest (Optica Publishing Group, 2021),
paper W2C.2
•https://doi.org/10.1364/OECC.2021.W2C.2

Compact Edge-Coupler for Broadband and High-Efficient Fiber-to-Waveguide Coupling Using Cascaded Silicon Nitride Tapers

Bishal Bhandari, Chul-Soon Im, Min-Cheol Oh, and Sang-Shin Lee

Optoelectronics and Communications Conference 2021

Hong Kong China
3–7 July 2021
ISBN: 978-1-943580-92-7

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Photonic Waveguides (W2C)

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B. Bhandari, C. Im, M. Oh, and S. Lee, "Compact Edge-Coupler for Broadband and High-Efficient Fiber-to-Waveguide Coupling Using Cascaded Silicon Nitride Tapers," in 26th Optoelectronics and Communications Conference, P. Alexander Wai, H. Tam, and C. Yu, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper W2C.2.

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Abstract

We propose a compact silicon nitride edge-coupler with a footprint of 76 µm using cascaded taper segments. It exhibits a coupling efficiency above 90% for C and L bands and excellent alignment and cleaving tolerances.

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