Compact optical switch using phase-change material for transparent photonic network
نویسندگان
چکیده
We have fabricated optical switches using Si waveguides and phase-change material. The switch is based on an asymmetric Mach-Zehnder interferometer, and thin film Ge2Sb2Te5 is deposited onto the Si waveguides. We observe the change in transmission spectra of the switch by laser pulse irradiations repeatedly. The phase change of the Ge2Sb2Te5 film with only 1-μm-square is sufficient for π-phase shift and switching.
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