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A new waveguide platform is demonstrated that allows the bend radii to be substantially decreased for titanium-diffused lithium-niobate (LiNbO3) waveguides using vertically integrated arsenic-trisulfide (As2S3) overlay waveguides. Power is transferred from a Ti-diffused waveguide into the overlay waveguide using tapers, guided by the As2S3 waveguide through the S-bend region and transferred back into...
A race-track ring resonator with a 600 mum diameter and 25 GHz free spectral range is demonstrated by vertically integrating arsenic-trisulfide (As2S3) waveguides with Ti-diffused LiNbO3 waveguides. Measurements of the TM ring resonator response are presented.
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