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首页> 美国卫生研究院文献>Micromachines >Flexible Thermo-Optic Variable Attenuator based on Long-Range Surface Plasmon-Polariton Waveguides
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Flexible Thermo-Optic Variable Attenuator based on Long-Range Surface Plasmon-Polariton Waveguides

机译：基于远程表面等离激元-极化波导的柔性热光可变衰减器

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摘要

A flexible thermo-optic variable attenuator based on long-range surface plasmon-polariton (LRSPP) waveguide for microwave photonic application was investigated. Low-loss polymer materials and high-quality silver strip were served as cladding layers and core layer of the LRSPP waveguide, respectively. By using finite element method (FEM), the thermal distribution and the optical field distribution have been carefully optimized. The fabricated device was characterized by end-fire excitation with a 1550 nm laser. The transmission performance of high-speed data and microwave modulated optical signal was measured while using a broadband microwave photonics link. The results indicated that the propagation loss of the LRSPP waveguide was about 1.92 dB/cm. The maximum attenuation of optical signal was about 28 dB at a driving voltage of 4.17 V, and the variable attenuation of microwave signals was obviously observed by applying different driving voltage to the heater. This flexible plasmonic variable attenuator is promising for chip-scale interconnection in high-density photonic integrated circuits and data transmission and amplitude control in microwave photonic systems.
机译：研究了基于LRSPP波导的柔性热光可变衰减器在微波光子应用中的应用。低损耗聚合物材料和高质量银带分别用作LRSPP波导的包层和芯层。通过使用有限元方法（FEM），已经仔细优化了热分布和光场分布。所制造的设备的特征在于使用1550 nm激光进行端射激发。使用宽带微波光子链路测量了高速数据和微波调制光信号的传输性能。结果表明，LRSPP波导的传输损耗约为1.92 dB / cm。在4.17 V的驱动电压下，光信号的最大衰减约为28 dB，通过在加热器上施加不同的驱动电压，可以明显观察到微波信号的可变衰减。这种灵活的等离激元可变衰减器有望在高密度光子集成电路中实现芯片级互连，并在微波光子系统中实现数据传输和幅度控制。

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