  We demonstrate the first optical parametric oscillator (OPO) based on
chalcogenide glass. The parametric gain medium is an As2Se3 chalcogenide
microwire coated with a layer of polymer. The doubly-resonant OPO oscillates
simultaneously at a Stokes and an anti Stokes wavelength shift of >50 nm from
the pump wavelength that lies at {\lambda}P = 1552 nm. The oscillator has a
peak power threshold of 21.6 dBm and a conversion efficiency of >19 %. This OPO
experiment provides an additional application of the chalcogenide microwire
technology; and considering the transparency of As2Se3 glass extending far in
the mid-infrared (mid-IR) wavelengths, the device holds promise for realizing
mid IR OPOs utilizing existing optical sources in the telecommunications
wavelength region.
