We experimentally demonstrate an In P-based hybrid integration of a single-mode DFB laser emitting at around 1310 nm and a tunneling diode. The evident negative differential resistance regions are obtained in both ele...We experimentally demonstrate an In P-based hybrid integration of a single-mode DFB laser emitting at around 1310 nm and a tunneling diode. The evident negative differential resistance regions are obtained in both electrical and optical output characteristics. The electrical and optical bistabilities controlled by the voltage through the tunneling diode are also measured. When the voltage changes between 1.46 V and 1.66 V, a 200-mV-wide hysteresis loop and an optical power ON/OFF ratio of 17 dB are obtained. A side-mode suppression ratio of the integrated device in the ON state is up to 43 dB. The tunneling diode can switch on/off the laser within a very small voltage range compared with that directly controlled by a voltage source.展开更多
海洋环境监测具有监测节点分散、节点数量多、测量数据种类复杂、信息交换和通信业务多样性的特点。无线传感器网络可以减少线路连接,降低部署和运维成本。6LoWPAN(IPv6 over Low-Power Wireless Personal AreaNetworks)技术基于IEEE802...海洋环境监测具有监测节点分散、节点数量多、测量数据种类复杂、信息交换和通信业务多样性的特点。无线传感器网络可以减少线路连接,降低部署和运维成本。6LoWPAN(IPv6 over Low-Power Wireless Personal AreaNetworks)技术基于IEEE802.15.4实现了IPV6数据包在无线传感器网络中的传输,是实现无线传感器网络和因特网互联的理想技术。在研究Contiki 6LoWPAN网络拓扑结构和协议的基础上,文中采用TI CC1310平台搭建了无线传感器节点和边缘路由器,节点数据经过边缘路由器和互联网,最终发送到服务器监控系统,实现海洋数据的动态监测。通过实验证明,该系统具有组网简单、传输距离远、成本和功耗低等优势。展开更多
基金Supported by the National Key Research and Development Program of China under Grant No 2017YFB0405301the National Natural Science Foundation of China under Grant Nos 61604144 and 61504137
文摘We experimentally demonstrate an In P-based hybrid integration of a single-mode DFB laser emitting at around 1310 nm and a tunneling diode. The evident negative differential resistance regions are obtained in both electrical and optical output characteristics. The electrical and optical bistabilities controlled by the voltage through the tunneling diode are also measured. When the voltage changes between 1.46 V and 1.66 V, a 200-mV-wide hysteresis loop and an optical power ON/OFF ratio of 17 dB are obtained. A side-mode suppression ratio of the integrated device in the ON state is up to 43 dB. The tunneling diode can switch on/off the laser within a very small voltage range compared with that directly controlled by a voltage source.
文摘海洋环境监测具有监测节点分散、节点数量多、测量数据种类复杂、信息交换和通信业务多样性的特点。无线传感器网络可以减少线路连接,降低部署和运维成本。6LoWPAN(IPv6 over Low-Power Wireless Personal AreaNetworks)技术基于IEEE802.15.4实现了IPV6数据包在无线传感器网络中的传输,是实现无线传感器网络和因特网互联的理想技术。在研究Contiki 6LoWPAN网络拓扑结构和协议的基础上,文中采用TI CC1310平台搭建了无线传感器节点和边缘路由器,节点数据经过边缘路由器和互联网,最终发送到服务器监控系统,实现海洋数据的动态监测。通过实验证明,该系统具有组网简单、传输距离远、成本和功耗低等优势。
