On-chip Spectrometer based on Al2O3 Arrayed Waveguide Gratings in the UV-blue Range
Year: 2024
Type: conference-paper
Abstract: Arrayed waveguides gratings (AWGs) are among the most common technologies in wavelength division multiplexing (WDM) and have promising applications in telecommunication and sensing. These devices are typically realized in material platforms such as silicon-on-insulator (SOI) and silicon nitride (SiN). With the emergence of material platforms that support low-loss propagation in the ultraviolet wavelength range, demonstrations of devices operating at these wavelengths are a subject of interest. Al2O3 is one of the materials that is studied in the context of integrated photonic circuits that target UV wavelengths. In this paper, we propose based on simulations, promising Al2O3-based AWGs for the development of a UV-blue (340-480 nm) spectrometer. The devices are fully etched and are designed at wavelengths of 369 and 452 nm. Here, 4- and 8-channels AWGs are proposed with corresponding wavelength channel spacing of 2.5 and 5 nm. Insertion losses range from 3 to 6 dB. We believe that these AWGs could pave the way towards potential medical applications in UV-VIS spectroscopy, biosensing and bioimaging.
Authors: Caut, A.; id_orcid 0000-0002-7790-5188, Jongebloed, B., García-Blanco, S.M.
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7115292980
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