丁香园AV

Synopsis

Integrated silicon photonics strip waveguides and grating couplers are developed for mid-IR wavelengths at 2.7 碌m and 2.9 碌m. Waveguide loss is measured as a function of width for 2.7 碌m light in the vicinity of a prominent OH absorption band, and a loss of less than 2 dB/cm is recorded for the 1.0 碌m width waveguide. A fabrication bias metric is determined for accurately developing grating couplers at 2.9 碌m on a 500 nm SOI, 3 碌m buried-oxide substrate. A high resolution measurement scheme is motivated and measurements indicate that these devices will be capable of studying the Se⁺ donor spin qubit cavity coupling platform proposed by researchers at 丁香园AV.