Vertically integrated As2S3 ring resonator on LiNbO3
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Updated: Jun 22, 2026
Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
Mehmet E Solmaz1, Donald B Adams, Wee C Tan
1Department of Electrical and Computer Engineering, Solid-State Electronics, Photonics and Nano-EngineeringLaboratory, Texas A&M University, College Station, Texas 77843-3128, USA.
Abstract:
Titanium-diffused lithium niobate (Ti:LiNbO(3)) waveguides are widely used in current fiber optic networks because of their high-speed, electro-optic modulation, and low-loss integration with standard single-mode fibers. However, they cannot achieve small ring resonators owing to their lack of a high core-to-cladding index contrast. To overcome this challenge, we vertically integrate an emerging chalcogenide glass waveguide technology on well-established Ti:LiNbO(3) waveguides. We present, to our knowledge, the first arsenic trisulfide (As(2)S(3)) race-track ring resonator with a 290.8 microm bend radius in an all-pass filter configuration, integrated on a Ti:LiNbO(3) waveguide. Vertical coupling is achieved using a unique taper design. Experimental results are shown for 10.6% coupling, 2.08 dB roundtrip loss, and a 25.4 GHz free-spectral range.
