基于多波长激光器和MZ干涉仪的可调谐可重构微波光子滤波器

发布时间：2018-05-10 16:56

  本文选题：光子晶体光纤 + 多波长激光器　； 参考：《南开大学学报(自然科学版)》2017年03期

【摘要】：提出了1种基于波长间隔可调谐多波长激光器和MZ干涉仪的微波光子滤波器.光子晶体光纤(PCF)Sagnac环滤波器具有波长选择的功能,使激光器产生多波长.向PCF的一个大空气孔中填充甘油,调节温度,改变PCF的双折射,能够使激光器产生不同波长间隔的激光.该激光器作为微波光子滤波器的光源,通过连续调节输出激光的波长间隔,可使滤波器具有不同的自由频谱范围(FSR),实现了滤波器的连续可调谐.当温度的变化范围为25-120℃时,仿真测得,FSR的变化范围为2.33-10.54 GHz.此外,通过调节MZ干涉仪两臂的臂长差,改变载波系数,使滤波器通带具有不同的主旁瓣抑制比和3 d B带宽,频率响应形状发生明显变化,实现了滤波器的可重构特性.
[Abstract]:A microwave photonic filter based on wavelength interval tunable multiwavelength laser and MZ interferometer is proposed. Photonic crystal fiber (PCF) Sagnac loop filter has the function of wavelength selection, which makes the laser produce multiple wavelengths. By filling a large air hole in PCF with glycerol, adjusting temperature and changing the birefringence of PCF, lasers with different wavelength intervals can be produced. The laser is used as the light source of microwave photonic filter. By continuously adjusting the wavelength interval of the output laser, the filter has different free spectrum range and the filter can be continuously tunable. When the temperature range is 25-120 鈩，

本文编号：1870114