Silicon photonic chip for 16-channel wavelength division (de-)multiplexing in the O-band
Silicon photonic chip for 16-channel wavelength division (de-)multiplexing in the O-band
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DOI：
10.1364/oe.397141
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发表时间：
2020-08-03
期刊：
影响因子：
3.8
通讯作者：
Fainman, Yeshaiahu
中科院分区：
文献类型：
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作者：
Davis, Jordan A.;Li, Ang;Fainman, Yeshaiahu
我们在实验上展示了一个硅光子芯片级的16通道波分复用器（WDM）工作在O波段。硅光子芯片由一个公共输入总线波导集成了一系列的16个光谱分插滤波器实现的4端口反向布拉格耦合器和谐振包层调制扰动。这些特征的组合减小了滤波器的光谱带宽并改善了串扰。总线和分插波导之间的包层调制扰动的切趾用于优化传播方向上的耦合系数的强度，以减少相邻信道上的信道内串扰。所制造的芯片进行了实验验证与测量的通道内串扰类似的-18.9 dB的通道间距为2.6 nm。复用器/解复用器芯片也用10 Gbps数据波形进行了实验测试。由此产生的眼图表明，这种方法是适合于数据中心的WDM为基础的互连在O波段具有大的聚合带宽。(C)2020年美国光学学会根据OSA开放获取出版协议的条款
We experimentally demonstrate a silicon photonic chip-scale 16-channel wavelength division multiplexer (WDM) operating in the O-band. The silicon photonic chip consists of a common-input bus waveguide integrated with a sequence of 16 spectral add-drop filters implemented by 4-port contra-directional Bragg couplers and resonant cladding modulated perturbations. The combination of these features reduces the spectral bandwidth of the filters and improves the crosstalk. An apodization of the cladding modulated perturbations between the bus and the add/drop waveguides is used to optimize the strength of the coupling coefficient in the propagation direction to reduce the intra-channel crosstalk on adjacent channels. The fabricated chip was validated experimentally with a measured intra-channel crosstalk of similar to-18.9 dB for a channel spacing of 2.6 nm. The multiplexer/demultiplexer chip was also experimentally tested with a 10 Gbps data waveform. The resulting eye-pattern indicates that this approach is suitable for datacenter WDM-based interconnects in the O-band with large aggregate bandwidths. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement