Low Loss Suspended Silicon Waveguide and Photonic Crystal for THz Regime

Akiki, Elias; Verstuyft, Mattias; Ducournau, Guillaume; Walter, Benjamin; Mairiaux, Estelle; Faucher, M.; Lampin, Jean‐François; Vanwolleghem, Mathias; Kuyken, Bart

doi:10.1109/cleoe-eqec.2019.8872554

Cited by 2 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Headland et al showed silicon waveguide-based THz systems working between 260-390 GHz [18]. Multiple topologies of silicon on insulator (SoI)-based waveguides [19,20] and integrated Terahertz resonators [21,22], waveguides based on silicon-BCB-quartz platform [12] and suspended silicon THz waveguides [23,24] report relatively low losses between 0.4-1 dB/cm, and feature a bandwidth ranging between 100-250 GHz. Free-standing multimode dielectric waveguides with excellent transitions were demonstrated using dielectric rod waveguides [25,26].…”

Section: Introductionmentioning

confidence: 99%

Broadband Terahertz Photonic Integrated Circuit with Integrated Active Photonic Devices

2021

View full text Add to dashboard Cite

Present-day photonic terahertz (100 GHz–10 THz) systems offer dynamic ranges beyond 100 dB and frequency coverage beyond 4 THz. They yet predominantly employ free-space Terahertz propagation, lacking integration depth and miniaturisation capabilities without sacrificing their extreme frequency coverage. In this work, we present a high resistivity silicon-on-insulator-based multimodal waveguide topology including active components (e.g., THz receivers) as well as passive components (couplers/splitters, bends, resonators) investigated over a frequency range of 0.5–1.6 THz. The waveguides have a single mode bandwidth between 0.5–0.75 THz; however, above 1 THz, these waveguides can be operated in the overmoded regime offering lower loss than commonly implemented hollow metal waveguides, operated in the fundamental mode. Supported by quartz and polyethylene substrates, the platform for Terahertz photonic integrated circuits (Tera-PICs) is mechanically stable and easily integrable. Additionally, we demonstrate several key components for Tera-PICs: low loss bends with radii ∼2 mm, a Vivaldi antenna-based efficient near-field coupling to active devices, a 3-dB splitter and a filter based on a whispering gallery mode resonator.

show abstract