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在集成声光可调谐滤波器(AOTF)工作时,由于环境温度变化以及自身声表面波吸收使器件的温度发生变化,导致滤出波的中心波长发生漂移。在理论分析的基础上,对声光可调谐滤波器的温度特性进行了实验研究,并在此基础上提出一种新的解决方案:用动态控制射频信号来实现声光可调谐滤波器的稳频输出,并用该方案实现了中心波长的漂移控制在0.08 nm以内,满足了波分复用(WDM)通信系统的应用要求。
When integrated with an acousto-optic tunable filter (AOTF), the temperature of the device changes due to changes in ambient temperature and its own SAW absorption, causing the center wavelength of the filtered wave to drift. Based on the theoretical analysis, the temperature characteristics of the acousto-optic tunable filter are experimentally studied. Based on this, a new solution is proposed: the steady-state of the acousto-optic tunable filter Frequency output, and the use of the program to achieve the center wavelength drift control within 0.08 nm, to meet the wavelength division multiplexing (WDM) communication system application requirements.