基于Kerr效应的微环谐振腔延时器件

Time Delay Characteristics of Microring Resonator Device Based on Optical Kerr Effect

对基于光学Kerr效应的微环谐振腔延时器件进行了研究.采用耦合模式理论计算了波导与微环谐振腔间的耦合系数,给出了所研究器件的材料及各层组分,提出不同阶数微环的情况下延时数值的控制方法.结果表明:微环谐振腔半径为300μm,波导截面尺寸为450×1 000nm2,在小于±5ps抖动的条件下,每个通道达到超过130ps的延时数值,同时延时带宽达20GHz,自由光谱范围达50GHz,工作波段在1 550nm附近,满足密集波分复用系统的要求.整个结构全光控制,且能耗不超过0.8dBm,响应速度达到ps量级,体积不超过3mm3,便于集成,满足多信道光学延时的要求,为全光通信网络中延时线的研究提供了参考.

The time delay characteristics of microring resonator device based on optical Kerr effect were studied. The coupling coeffecient was calculated by the coupled mode theory. The designed parameters were introduced including the material and component. The radius of microring was 300 μm. The sectional dimension was 400 X 1 000 nm2^. The controlling methods of time delay was presented. The motivation was large time delay value as much as possible on the condition of less than ± 5 ps ripple. The results show that the delay time is more than 130 ps; compensating bandwidth is about 20 GHz; free spectral range is 50 GHz; the working wavelength which is 1 550 nm satisfies the demand of dense wavelength division multiplexing system. The energy consumption is less than 0. 8 dBm. The fast operating speed is ps order and small capacity which is less than 3 mm2 is great advantages for the device. The devices provide references for the delay lines in all optical communication networks.