Design and performance analysis of integrated focusing grating couplers for the transverse-magnetic TM00 mode in a photonic BiCMOS technology

Autor:	Georgieva, Galina, Voigt, Karsten, Peczek, Anna, Mai, Christian, Zimmermann, Lars
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	lcsh:Applied optics. Photonics Transverse-magnetic mode Silicon rib waveguide Physics::Optics lcsh:TA1501-1820 Focusing grating coupler Integrated waveguides Physics::Accelerator Physics Photonic integration lcsh:QC350-467 ddc:530 Nonlinear Sciences::Pattern Formation and Solitons Silicon nanowire lcsh:Optics. Light
Zdroj:	Journal of the European Optical Society-Rapid Publications, Vol 16, Iss 1, Pp 1-11 (2020)
ISSN:	1990-2573
Popis:	Focusing grating couplers for the excitation of the fundamental transverse-magnetic (TM) mode in integrated silicon photonic waveguides are designed and characterized under the boundary conditions of a photonic BiCMOS foundry. Two types of waveguide geometries are considered – a nanowire and a rib waveguide. Wafer-scale experimental results for nanowire TM grating couplers are in excellent agreement with numerical investigations and demonstrate a robust behavior on the wafer. The mean coupling loss and the 3σ interval are -3.9 ± 0.3 dB. The on wafer variation is three times lower than for the fundamental transverse-electric (TE) polarization. Similarly, the coupling in rib waveguides is examined as well. The results indicate that the rib waveguides require a modified geometry when designed for TM. In general, the nanowire waveguide type is more suitable for TM coupling, showing a stable and repeatable performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a09fb827f4b4304eab7dcf121eb60614 http://link.springer.com/article/10.1186/s41476-020-00129-4 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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