Planar waveguide obtained by burying a Ge_22As_20Se_58 fiber in As_2S_3 glass

Abstract

We demonstrate the possibility of fabricating an infrared transmitting waveguide by burying fiber in chalcogenide glasses. Two highly mature chalcogenide glasses are used for these experiments. GASIR glass from Umicore IR Glass, Olen, Belgium, with the composition of Ge 22 As 20 Se 58 is used to draw fibers that are then buried in an As 2 S 3 glass substrate. The glasses we used are compatible, and we obtained a high quality interface. We performed a transmission test with a CO 2 laser at 9:3 μm. The potential for extremely low loss planar waveguides is discussed.

Mid-infrared integrated optics: versatile hot embossing of mid-infrared glasses for on-chip planar waveguides for molecular sensing

“…There has been some progress toward volumetric photonic integration, i.e., beyond two-dimensional planar waveguides and toward making three-dimensional (3-D) waveguides. Thus, Coulombier et al 17 have demonstrated burying a fiber in bulk glass. Also, high intensity fs laser *Address all correspondence to: Angela B. Seddon, E-mail: angela.seddon@ nottingham.ac.uk 3-D writing at 1.55-μm wavelength has been used to make waveguides by means of effecting photorefraction in the volume of a bulk glass; the photorefraction relies on the innately very high optical nonlinearities of chalcogenide glasses.…”