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The emerging fields of on-chip photonic data processing, neuromorphic computing, and quantum technology are enabled by mature integrated photonics platforms. Silicon is considered the material of choice and silicon photonics is rapidly becoming a mainstream industrial platform. One of the key elements lacking is the availability of non-volatile programmable materials compatible with silicon photonics which could be used to reconfigure and program circuits without requiring continuous power to maintain its state. Recently, a new family of phase change materials Sb2S3 and Sb2Se3 have gained interest for their properties including a refractive index close to silicon, large switching of refractive index at telecommunications wavelength and ultralow optical losses. I will present here our results in developing the materials and their integration into new types of reconfigurable silicon photonics devices.
Otto L. Muskens,Matthew Delaney,Ioannis Zeimpekis,Daniel Lawson,Sophie Blundell,David Thomson, andDan Hewak
"Programmable and reconfigurable silicon photonic circuits using the low-loss phase change material Sb2Se3 (Conference Presentation)", Proc. SPIE PC12225, Optics and Photonics for Information Processing XVI, PC1222502 (3 October 2022); https://doi.org/10.1117/12.2634035
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Otto L. Muskens, Matthew Delaney, Ioannis Zeimpekis, Daniel Lawson, Sophie Blundell, David Thomson, Dan Hewak, "Programmable and reconfigurable silicon photonic circuits using the low-loss phase change material Sb2Se3 (Conference Presentation)," Proc. SPIE PC12225, Optics and Photonics for Information Processing XVI, PC1222502 (3 October 2022); https://doi.org/10.1117/12.2634035