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用传输矩阵法研究了一维双周期光量子阱中的共振透射谱,揭示了光子隧穿双周期光量子阱时共振透射谱线的规律。研究发现,该结构拓宽了光子禁带区域,同时禁带中出现了多个共振透射谱,光子晶体的垒区通带频率范围内共振透射谱线的个数主要与光量子阱中垒区的周期数有关,而光子晶体的阱区通带频率范围内共振透射谱线的个数主要与光量子阱中阱区的周期数有关。同时也发现当双周期光量子阱结构的周期数为N时,适当调节垒区和阱区的周期数,可使每个共振透射谱分裂为N-1条,且各分裂谱线互不交叠,这样在有限的禁带区域可以成倍增加光子束缚态,使信道密度增大,能有效地优化光波带宽的使用,有望在光通信超密集波分复用和光学精密测量中获得广泛应用。
The resonant transmission spectrum in a one-dimensional two-period photon trap was studied by transmission matrix method, and the law of resonant transmission line when photon tunneling in two-period photon quantum well was revealed. It is found that the structure broadens the photonic band gap area and multiple resonance transmission spectra appear in the forbidden band. The number of resonant transmission lines in the passband frequency range of the photonic crystal is mainly related to the period of the barrier region in the photonic quantum well However, the number of resonant transmission lines in the passband frequency range of the photonic crystal is mainly related to the number of wells in the optical quantum well. It is also found that when the number of periods of the double-period optical quantum well structure is N, proper adjustment of the number of periods in the barrier region and the well region allows each resonance transmission spectrum to be split into N-1 stripes without overlapping with each other , So that in a limited band-gap region, the photon bound state can be increased exponentially to increase the channel density, which can effectively optimize the use of the bandwidth of light waves and is expected to be widely used in optical wavelength division multiplexing and optical precision measurement of optical communications.