Broadband phase shifter based on SiN-MoS integrated racetrack resonator.

As the critical device of microwave photonics and optical communication, the low-loss and high-efficiency optical phase shifter has attracted intense attention in photonic integrated circuits. However, most of their applications are restricted to a particular band. Little is known about the characteristics of broadband.

Nonlinear optical response of inverse-designed integrated photonic devices.

Gradient-based optimization combined with the adjoint method has been demonstrated to be an efficient way to design a nano-structure with a vast number of degrees of freedom. However, most inverse-designed photonic devices are applied as linear photonic devices. Here, we demonstrate the nonlinear optical response in inverse-designed integrated splitters fabricated on a SiN platform.

MoS hybrid integrated micro-ring resonator phase shifter based on a silicon nitride platform.

We demonstrate a low-power, compact micro-ring phase shifter based on hybrid integration with atomically thin two-dimensional layered materials, and experimentally establish a low-loss silicon nitride platform. Using a wet transfer method, a large-area few-layer MoS film is hybrid integrated with a micro-ring phase shifter, leading to a tuning efficiency of 5.8 pm V at a center wavelength of 1545.