Piezoelectric optomechanical platforms represent one of the most promising routes towards achieving quantum transduction of photons between the microwave and optical frequency domains. However, there are significant challenges to achieving near-unity transduction efficiency in these transducers. In this talk, we will discuss some of these key limitations and engineering approaches to overcome them.
Acousto-Optic Modulators (AOM) have been used for a wide variety of signal processing application. Traditionally, they are built with bulk materials (e.g. crystal quartz, tellurium dioxide, and fused silica), which limit their operational frequency to below 300MHz. In addition, the absence of a CMOS foundry-compatible process has prevented the scalable integration, mass production, and design complexity achieved by integrated photonic devices. An effcient high-frequency AOM can be the building block for different applications, such as a high-speed spatial light modulator with tens of MHz bandwidth, or a viable free space optical interconnect link between processors and memory that meets the stringent energy and bandwidth constraints. We report the operation of an AOM with operation frequency between 300 MHz and 3.5 GHz realized by MEMS foundry (Piezo-MUMPS) platform. Preliminary results on the detection of weak RF signal is reported.
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