AI 中文总结
本研究提出时间编码模拟光子中介层，通过ATC转换模拟信号为时间间隔传输，实现模拟视觉传感器与加速器的高能效集成，在VWW数据集上EDP提升2.04倍，泛化性能优异。
AI 中文摘要
本研究提出一种时间编码模拟光子中介层，可在空间分离的小芯片间实现模拟信号的长距离高保真传输。与此前仅支持数字数据的硅光子链路不同，该中介层通过模数时间转换器（ATC）将幅度转换为时间间隔，经波分复用光子链路传输后，在接收端重构数值，无需明确的高精度模数转换器（ADC）/数模转换器（DAC）数据转换流水线。该链路嵌入隐式6位时域量化，每个处理单元仅用一个波长，与比特精度无关。在包含像素内计算（IPC）传感器的全模拟视觉流水线中评估时，其在560×560视觉唤醒词（VWW）数据集上，相较于8位数字电学基线实现了2.04倍的能量-延迟乘积（EDP）提升，且优势随链路长度增大，即使与精度匹配的6位基线相比亦然。该流水线在ResNet18和MobileNetV2上针对VWW的准确率分别达89.87%和86.15%，并在CIFAR-10和ModelNet40上的泛化性能与数字基线的差距在2%以内。
英文摘要
This work introduces a time-encoded analog photonic interposer that enables long-distance, high-fidelity transport of analog signals between spatially separated chiplets. Unlike prior silicon-photonic links limited to digital data, the interposer preserves analog information by converting amplitudes into timing intervals using an analog-to-time converter (ATC), transmitting them over a wavelength-division-multiplexed photonic link, and reconstructing values at the receiver without an explicit high-precision ADC/DAC data-converter pipeline. The link instead embeds an implicit 6-bit time-domain quantization and uses a single wavelength per processing element independent of bit precision. Evaluated in a fully analog vision pipeline with an in-pixel computing (IPC) sensor, it achieves a 2.04x energy--delay product (EDP) improvement over an 8-bit digital electrical baseline on the 560x560 Visual Wake Words dataset, with the advantage widening with link length even against a precision-matched 6-bit baseline. The pipeline holds 89.87% and 86.15% accuracy on ResNet18 and MobileNetV2 for VWW and generalizes across CIFAR-10 and ModelNet40 within 2% of the digital baseline.
