High index glass CMOS compatible all-optical chips for telecom and optical interconnects

This paper reports a wide range of functions in a CMOS compatible high index doped silica glass platform, including an integrated multiple wavelength source, an ultra-high repetition rate modelocked laser, and an all-optical integrator. CW oscillation in a Q =1.2 million micro-ring resonator with a slope efficiency of 7.4% (single oscillating mode, single port), a threshold power of 54 mW, and frequency spacings from 200 GHz to >; 6THz was achieved as well as modelocking with repetition rates as high as 800GHz. Novel functions in ultra-long (45cm) spiral waveguides, including a time-lens optical oscilloscope and parametric amplifier with >; 15dB of gain is also reported. The success of these devices is due to very low linear loss, negligible nonlinear loss (up to 25GW/cm²), and a high γ = 233W^-1 km^-1 . The low loss, design flexibility, and CMOS compatibility of this platform will enable devices for telecommunications, computing, sensing, metrology and other areas.