Yang Jinghui, Zhang Xinping
Institute of Information Photonics Technology Faculty of Science Beijing University of Technology Beijing 100124 China.
Modern Police Technology and Equipment Research Center College of Police Equipment and Technology China People's Police University Langfang 065000 China.
Adv Sci (Weinh). 2021 Mar 16;8(10):2100280. doi: 10.1002/advs.202100280. eCollection 2021 May.
Ultrafast optical switch based on plasmonic nanostructures has large application potentials in optical logic circuits and optical communication systems. Integration of plasmonic optical switching devices with optical fibers is a breakthrough for realizing practical applications in long-range optical data transmission or communication techniques. Here, the incorporation of plasmonic optical switch devices onto the end facets of optical fibers is reported, so that the switched optical signals are generated by interaction between femtosecond laser pulses and plasmonic nanostructures on one end of the fiber, and are delivered via the fiber waveguide to the other end for detection or decoding. "Quenching" of localized surface plasmon in the gold nanowires by its interaction with band-edge modulation in gold through strong optical excitation is the responsible photophysics. This work accomplishes for the first time the implementation of ultrafast plasmonic optical switch device on optical fiber tips for logic data transmission.
基于等离子体纳米结构的超快光开关在光逻辑电路和光通信系统中具有巨大的应用潜力。将等离子体光开关器件与光纤集成是在远程光数据传输或通信技术中实现实际应用的一项突破。在此，报道了将等离子体光开关器件并入光纤的端面，使得开关光信号由飞秒激光脉冲与光纤一端的等离子体纳米结构之间的相互作用产生，并通过光纤波导传输到另一端进行检测或解码。金纳米线中局域表面等离子体通过与金中带边调制的强光学激发相互作用而“猝灭”是相关的光物理过程。这项工作首次实现了在光纤尖端上用于逻辑数据传输的超快等离子体光开关器件。
