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可调光功率分束器是集成光子系统中的重要功能器件,其光功率输出具有动态可调控特性,诸多光子系统对其有着广泛需求.本文基于空隙槽型Y分支波导结构,利用热膨胀效应,提出了一种新型可调光功率分束器实现方法,通过调控温度来改变分支处空隙槽的宽度,以实现其分支波导的光功率输出的动态变化.采用有限元方法,对其热膨胀形变和光学性能进行了模拟分析.其模拟结果表明,该器件能实现大范围光分束调控,且对波长和偏振态依赖性低;同时,该器件具有结构简单、易于设计和制作、易于调控等优点,这种新型器件在各种光子系统中具有重要应用前景.
The tunable optical power beam splitter is an important functional device in the integrated photonic system, and the optical power output of the tunable optical power beamsplitter is dynamically regulatable and controllable, and many photonic systems have a wide range of requirements.In this paper, based on the slotted Y-branching waveguide structure, A new tunable optical power beamsplitter method is proposed, in which the width of the voids in the branch is changed by controlling the temperature so as to realize the dynamic change of optical power output of the branch waveguide. The finite element method The simulation results show that the device can achieve a wide range of optical beam splitting control, and its dependence on wavelength and polarization state is low. Meanwhile, the device has the advantages of simple structure, easy to design and manufacture, easy to control and so on , This new type of device has important applications in various photonic systems.