Opt Lett. 2018 May 1;43(9):2082-2085. doi: 10.1364/OL.43.002082.
We propose a reconfigurable broadband mode (de)multiplexer based on a thermally induced long-period grating integrated with an asymmetric Y-junction. Either of the two spatial modes of a two-mode waveguide launched into the grating end of the device can be switched into either of the two output ports of the Y-junction by controlling the electric power applied to the electrode heater that induces the grating. Our typical device fabricated with polymer material that has a length of ∼14 mm shows a mode selectivity higher than 12 dB over the C+L band at a switching power of 198 mW. The device could find applications in reconfigurable mode-division-multiplexing systems.
我们提出了一种基于热诱导长周期光栅与非对称 Y 结集成的可重构宽带模式（解）复用器。通过控制施加在感应光栅的电极加热器上的电功率，可以将两个模式波导中任意一个模式的光从器件的光栅端耦合进 Y 结的两个输出端口之一。我们使用聚合物材料制作的典型器件，长度约为 14mm，在切换功率为 198mW 时，在 C+L 波段的模式选择性高于 12dB。该器件可应用于可重构的模式分复用系统。
