DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, DK-2800 Lyngby, Denmark.
Opt Lett. 2009 Dec 15;34(24):3818-20. doi: 10.1364/OL.34.003818.
We design and fabricate an on-chip tunable long-period grating device by integrating a liquid crystal photonic bandgap fiber on silicon structures. The transmission axis of the device can be electrically rotated in steps of 45 degrees as well as switched on and off with the response time in the millisecond range. The strength of the loss peak is controlled electrically, and the spectral position of the loss peak is thermally tunable. This compact design results in a stable grating and permits this device to be more easily applied in practical systems.
我们通过在硅结构上集成液晶光子带隙光纤设计并制作了一种片上可调谐长周期光栅器件。该器件的传输轴可以以 45 度的步长电旋转，并且可以在毫秒级的响应时间内打开和关闭。损耗峰的强度可以通过电控制，而损耗峰的光谱位置可以通过热调谐。这种紧凑的设计导致光栅稳定，并允许该器件更容易地应用于实际系统。
