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基于耦合模理论、微环谐振理论和电光调制理论,提出了一种可由电光调谐并带有两段U型波导的微环谐振器,通过仿真结果讨论了输出光谱、U型波导长度和耦合系数等参数的变化关系。仿真结果证明,相比较于其他报道过的带有U型波导的微环谐振器,本文所提出的微环谐振器在耦合系数取0.1时,实现了60dB以上的极高消光和极窄的带宽,同时自由光谱范围(FSR)可达到56nm。通过改变加载在微环和U型波导上的电压,可以分别实现波长和消光比的调谐。
Based on the coupled-mode theory, the micro-ring resonance theory and the electro-optic modulation theory, a microring resonator which can be tuned by electro-optic and with two U-shaped waveguides is proposed. The output spectra, the length of the U-shaped waveguide and the coupling coefficient Other parameters change. Simulation results show that compared with other reported micro-ring resonators with U-shaped waveguides, the proposed micro-ring resonators achieve very high extinction of 60 dB and very narrow bandwidth when the coupling coefficient is 0.1 , While free spectral range (FSR) up to 56nm. Tuning of wavelength and extinction ratio can be achieved separately by changing the voltage applied to the microring and the U-wave guide.