We assess the performance of a modular photonic integrated circuit (PIC) for space and time optical switching as an optical add-drop node for metro-access network applications. The PIC based on semiconductor optical amplifier (SOA) technology enables the implementation of compact, low cost and lossless add-dropping through fast optical switching. Data integrity measurements demonstrate error-free switching operation with less than 1 dB and 2.5 dB power penalty for 10 Gb/s and 40 Gb/s NRZ OOK optical signal, respectively. The dynamic control of the SOA based optical gates by the switch controller permits the power equalization of the switched channels. The experimental results also demonstrate dynamic forwarding, dropping and multicasting operation for a packetized 10 Gb/s NRZ OOK optical signal. The transparency of the SOA technology towards the optical signal’s data rate allows to avoid costly and power consuming dedicated interfaces at the add-drop node and open a path towards efficient statistical multiplexing.

中文翻译：

---

用于城域接入网络的无损光子集成分插开关节点

我们评估了用于空间和时间光交换的模块化光子集成电路 (PIC) 作为城域接入网络应用的光分插节点的性能。基于半导体光放大器 (SOA) 技术的 PIC 能够通过快速光交换实现紧凑、低成本和无损分插。数据完整性测量证明了无差错切换操作，对于 10 Gb/s 和 40 Gb/s NRZ OOK 光信号的功率损失分别小于 1 dB 和 2.5 dB。开关控制器对基于 SOA 的光门的动态控制允许开关通道的功率均衡。实验结果还展示了分组化 10 Gb/s NRZ OOK 光信号的动态转发、丢弃和多播操作。