空芯光子晶体光纤中光子带隙的测量

Measurement of the Bandgap in Hollow-core Photonic Crystal Fibers

利用全矢量法对空芯光子晶体光纤的光子带隙的存在进行了数值模拟,并通过实验进行了证实。采用透射谱的方法对带隙型光子晶体光纤分别在可见光以及近红外波段进行了测量,光从光纤的一端注入,探测器从另一端接收,实验结果发现可见光附近没有明显的透射带,而在波长为2591nm处出现了一个很强的透射带,证明了光子带隙的存在,与理论模拟相一致,实验的重复性好。

Using an efficient, full-vectorial numerical simulation method, we analyze the existent conditions of the photonic bandgap （PBG）, which is further demonstrated through experimental research. We utilize the method of transmission spectrum to measure the hollow-core photonic crystal fibers （HC-PCFs） in the visible and near infrared regions. The signal is obtained by detecting light from the end of the fiber. The experimental results indicate that there is a strong transmission band in the near infrared region, but hardly any bandagaps in the visible region, which is consistent with the theoretical computation. The repetition of the experimental results is fine.