摘要
实验证明了一种基于可编程、热控制马赫-曾德尔干涉仪的自由光谱范围(FSR)可调谐梳状滤波器,该滤波器由乙醇填充的单模光子晶体光纤组成,通过选择性地激活独立的加热元件,使用数字热敏机头来调节相位差,从而可以方便对FSR进行数字调谐。该滤波器在较宽的波长范围内,具有周期性平顶通带陡边特征和高消光比。
The paper experimentally demonstrated a free spectrum range （FSR） tunable comb filter based on a programmable thermo-controlled Mach-Zehnder interferometer. The device is constructed by sandwiching a length of ethanol-filled photonic crystal fiber between single-mode fibers. A digital thermal printer head is used to facilitate the interference as well as to adjust the phase difference by selectively activating the inde- pendent heating elements, thus the FSR can be digitally tuned conveniently. The filter shows a feature of peri- odic equalized passbands with flat-top steep-edge as well as a high extinction ratio over a very wide range.
出处
《光通信技术》
CSCD
北大核心
2014年第10期11-13,共3页
Optical Communication Technology
