We propose a three-cavity coupled cavity optomechanical (COM) structure with tunable system parameters and theoretically investigate the probe-light transmission rate. Numerical calculation of the system’s spectra demonstrates distinctive compound-induced transparency (CIT) characteristics, including multiple transparency windows and sideband dips, which can be explained by a coupling between optomechanically-induced transparency (OMIT) and electromagnetically-induced transparency. The effects of optical loss (gain) in the cavity, number and topology of active cavity, tunneling ratio, and pump laser power on the CIT spectrum are evaluated and analyzed. Moreover, the optical group delay of CIT is highly controllable and fast–slow light inter-transition can be achieved. The proposed structure makes possible the advantageous tuning freedom and provides a potential platform for controlling light propagation and fast–slow light switching.

我们提出了一种具有可调系统参数的三腔耦合腔光机（COM）结构，并从理论上研究了探针的光传输速率。系统光谱的数值计算显示了独特的复合感应透明性（CIT）特性，包括多个透明窗口和边带倾斜，这可以通过光机械感应透明性（OMIT）和电磁感应透明性之间的耦合来解释。评估并分析了腔中的光损耗（增益），活动腔的数量和拓扑，隧穿率以及泵浦激光功率对CIT光谱的影响。而且，CIT的光学群延迟是高度可控的，并且可以实现快速-缓慢的光转换。