Integrated waveguides
We implement solution processes to make mid-IR waveguides from chalcogenide glass. In contrast to etching-based methods, our solution-casting technique enables fabrication of microns-thick structures that match quantum cascade laser dimensions for on-chip integration. This technology leads the way to realizing compact and low-cost mid-IR laser-integrated devices for advanced chemical sensing.
Featured publications
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Inverted-Rib Chalcogenide Waveguides by Solution Process
Y. Zha, P. T. Lin, L. Kimerling, A. Agarwal, C. B. Arnold, ACS Photonics (2010) demonstrates the microtrench filling method for producing IR waveguides of 1.87 dB/cm propagation loss, which to our knowledge is the lowest among solution-processed waveguides. | Full text | View at publisher
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Solution-processed chalcogenide glass for integrated single-mode mid-infrared waveguides
C. Tsay, Y. Zha, and C.B. Arnold, Opt. Exp., (2010) demonstrates the viability of two soft lithography methods for patterning and integrating chalcogenide waveguides from solution: micro-molding in capillaries and micro-transfer molding. | Full text | View at publisher
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Chalcogenide waveguides integrated with quantum cascade lasers for on-chip mid-IR photonic circuits
C. Tsay et. al., Opt. Lett., (2010) demonstrates on-chip integration of solution-cast As2S3 chalcogenide waveguides and quantum cascade lasers. The integrated waveguides display strong optical confinement and guiding around 90 degree bends. | Full text | View at publisher
Mid-infrared characterization of solution processed As2S3 chalcogenide glass waveguides
C. Tsay et. al., Opt. Exp (2010) introduces a novel etch-free and cost-effective method for fabicrating mid-IR chalcogenide waveguides in which an As2S3 solution is cast in capillary channel molds formed by soft lithography. Resulting waveguides showed losses as low as 4.5 dB/cm and good optical absorption and roughness properties. | Full text | View at publisher
Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared
X. Xia, Q. Chen, C. Tsay, C. B. Arnold, and C. K. Madsen, Opt. Lett. (2010) demonstrates chalcogenide waveguides fabricated through photolithography and dry-etching on a LiNbO3 substrate for mid-IR photonic applications. Characterization on a mid-IR measurement setup with a quantum cascade laser shows losses as low as 0.33 dB/cm. | Full text | View at publisher
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All integrated waveguides publications
- C. Tsay, Y. Zha, and C. B. Arnold , “Solution-processed chalcogenide glass for integrated single-mode mid-infrared waveguides,” Opt. Exp. 18, 26744-26753 (2010) | Full text | View at publisher
- C. Tsay, F. Toor, C. Gmachl, and C. B. Arnold, “Chalcogenide glass waveguides integrated with quantum cascade lasers for on chip mid-IR photonic circuits,” Opt. Lett. 35, 3324-3326 (2010) | Full text | View at publisher
- C. Tsay, E. Mujagic, C. K. Madsen, C. Gmachl, and C. B. Arnold, “Mid-Infrared characterization of solution processed As2S3 chalcogenide glass waveguides”, Opt. Exp 18, 15523-15530 (2010) | Full text | View at publisher
- X. Xia, Q. Chen, C. Tsay, C. B. Arnold, and C. K. Madsen, “Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared” Opt. Lett. 35, 3228-3230 (2010) | Full text | View at publisher
