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环形谐振腔已经广泛应用于激光器的反馈腔、光学硅基调制器、光开关以及温度、压力和转动传感器,并且显示了其在光延时和光存储方面的潜力。Mach-Zehnder干涉仪(MZI)因其体积小、结构简单、灵敏度高等特点,被广泛应用于光纤传感等领域。利用MZI结构,可以实现对光纤环形谐振腔的传输曲线的测量。通过传输线模型,建立了环形谐振腔的静态分析方法,并推导得到传输曲线的表达公式及仿真图像。利用电放大器、信号发生器、光电检测器、采集卡及LabVIEW搭建实验平台,对理论模型进行实验检测,得到了实验结果。实验结果和仿真图像的对比表明,该方案能够有效地实现对传输曲线的测量。
Ring resonators have been widely used in laser feedback cavities, optical silicon-based modulators, optical switches and temperature, pressure and rotation sensors and have shown their potential in optical delay and optical storage. Mach-Zehnder interferometer (MZI) is widely used in optical fiber sensing and other fields due to its small size, simple structure and high sensitivity. Using the MZI structure, the transmission curve of the fiber ring resonator can be measured. Through the transmission line model, a static analysis method of ring resonator is established and the expression and simulation image of transmission curve are deduced. The experimental platform was established by using electrical amplifier, signal generator, photodetector, acquisition card and LabVIEW to test the theoretical model. The experimental results were obtained. The comparison between experimental results and simulation images shows that this scheme can effectively measure the transmission curve.