摘要
在传统的耦合微环并联结构中,通过改变相干距离来实现慢光效应的调谐,但无法进行动态调谐。提出了改进型的五环并联结构,在包层中嵌入加热器,利用热光调谐相邻环之间的相移器,实现连续调节任意通道的慢光效应。利用传输矩阵理论建立五环并联结构的直通端函数模型,Matlab仿真得到慢光效应的输出频谱。结果表明:改变相应微环之间的附加相移,可以得到具有可调谐滤波特性的耦合谐振腔诱导透明(CRIT)效应频谱和慢光效应频谱。上述方法具有光延迟通道可切换、可动态调谐的特性,增强了光学器件的灵活性。
The traditional coupling microring parallel structure can change the coherence distance to realize the turn of the slow light effect, but can not be dynamically tuned. Using the improved five - ring cascade structure, the heater was embedded in the cladding, and the phase shifter between the adjacent rings was tuned with thermocouple. The slow light effect of any channel was continuously adjusted. The direct - end function model of the five ring paral- lel structure was established using the transfer matrix theory, and the output spectrum of the slow light effect was sim- ulated based on Matlab. The results show that the couped - resonator - induced transparency （CRIT） effect spectrum and the slow light effect spectrum can be obtained by changing the phase shift between the corresponding microrings. The method has the characteristics of optical delay channel switchable and tunable dynamically, which enhances the flexibility of the optical device.
出处
《计算机仿真》
北大核心
2018年第2期148-152,250,共6页
Computer Simulation
基金
国家自然科学基金项目(61366006)
关键词
微环谐振器
耦合诱导透明
传输矩阵
慢光延迟
相移器
Microring resonator
Coupling induced transparency
Transmission matrix
Slow light delay
Phase shifter
