A Silicon Photonic device is a component or system that utilizes silicon-based materials and techniques to manipulate light (photons) for various applications. These devices are typically fabricated using semiconductor processes and integrate optical components such as waveguides, modulators, detectors, and light sources on a silicon substrate.

Silicon photonic devices leverage the unique properties of silicon, such as its transparency to infrared light and compatibility with existing semiconductor manufacturing processes, to enable the integration of photonics and electronics on the same chip.

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Real-Time Photonic Blind Interference Cancellation

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mmWave devices can broadcast multiple spatially-separated data streams simultaneously in order to increase data transfer rates. Data transfer can, however, be compromised by interference. Photonic blind interference cancellation systems offer a power-efficient means of mitigating interference, but previous demonstrations of such systems have been limited by high latencies and the need for regular calibration. Here, we demonstrate real-time photonic blind interference cancellation using an FPGA-photonic system executing a zero-calibration control algorithm. Our system offers a greater than 200-fold reduction in latency compared to previous work, enabling sub-second cancellation weight identification. We further investigate key trade-offs between system latency, power consumption, and success rate, and we validate sub-Nyquist sampling for blind interference cancellation. We estimate that photonic interference cancellation can reduce the power required for digitization and signal recovery by greater than 74 times compared to the digital electronic alternative.

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