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利用耦合模理论、电光调制理论和微环谐振理论,提出了一个聚合物微环谐振器电光开关阵列的模型。该器件由N-1个微环和N条平行信道构成,在微环上施加不同方式的驱动电压,可以实现N条信道的开关功能。以7微环8信道结构为例,在1550nm谐振波长下对该器件进行了优化和模拟。结果表明,微环波导芯的截面尺寸为1.7μm×1.7μm,波导芯与电极间的缓冲层厚度为2.5 μm,电极厚度为0.2μm,微环半径为13.76 μm,微环与信道间的耦合间距为0.1 4μm,输出光谱的3 dB带宽约为0.05 nm,开关电压约为8.1 V左右,插入损耗约为0.23～4.6 dB,串扰小于-20 dB。
Based on the coupled mode theory, electro-optic modulation theory and micro-ring resonance theory, a model of the polymer micro-ring resonator electro-optic switch array is proposed. The device is composed of N-1 micro-rings and N parallel channels. Different voltages can be applied to the micro-rings to switch N channels. Take 7 microring 8-channel structure as an example, the device is optimized and simulated at 1550nm resonant wavelength. The results show that the micro-ring waveguide core has a cross-sectional area of 1.7μm × 1.7μm, the thickness of the buffer layer between the waveguide core and the electrode is 2.5μm, the electrode thickness is 0.2μm, the micro-ring radius is 13.76μm, The pitch of the output spectrum is 0.1 4μm, the output spectrum has a 3 dB bandwidth of about 0.05 nm, a switching voltage of about 8.1 V, an insertion loss of about 0.23 to 4.6 dB and a crosstalk of less than -20 dB.