A photonic analog-to-digital conversion (PADC) based on intensity-to-frequency conversion using a frequency chirp in a semiconductor optical amplifier (SOA) is proposed. The presented PADC has a simple scheme whereby optical quantization is achieved using a single SOA with multiple rectangular bandpass filters placed in parallel. In this Letter, we successfully achieve $10\mathrm{GSamples}/\mathrm{s}$, eight-level optical quantization using a quantum-dot SOA. The PADC also has much lower input signal pulse power requirements for optical quantization, compared with conventional PADCs.

中文翻译：

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在半导体光放大器中使用红色频率chi进行光子模数转换

在半导体光放大器（SOA）中，提出了一种基于使用频率chi的强度-频率转换的光子模数转换（PADC）。提出的PADC具有一个简单的方案，利用单个SOA并排放置多个矩形带通滤波器可以实现光学量化。在这封信中，我们成功地实现了$10\mathrm{样本}/\mathrm{s}$使用量子点SOA进行八级光学量化。与传统的PADC相比，PADC对光学量化的输入信号脉冲功率要求也低得多。