摘要
实现了一种快速简单有效的测量基于压电陶瓷(PZT)的光相位调制器相位调制系数的方法。利用光纤马赫-曾德尔(M-Z)干涉仪输出光强度与两臂相位差的函数关系,通过3×3解调算法可以计算基于PZT的光相位调制器的相位调制系数。实验中在M-Z干涉仪另一臂加上一个基于PZT的相位调制器以减小系统噪声的影响,并在相位生成载波(PGC)解调实验中作为干扰源。最后通过PGC解调方案解调出了3×3耦合器的第一路输出信号中的干扰信号,实验验证了所测量的结果,表明该方法是行之有效的。
A new method is proposed to measure the modulation coefficient of the optical phase modulator based on piezoelectric ceramic （PZT）. The modulation coefficient of the optical phase modulator based on PZT can be calculated by 3 × 3 demodulation algorithm, which utilizes the functional relationship between the output optical intensity and the phase difference between the two arms of the Mach-Zehnder （M-Z） interferometer. A second phase modulator is placed on another arm of the M-Z interferometer to decrease the influence of the system noise, and used as the interference source for the next experiment. We finally use the phase generated carrier （PGC） algorithm to demodulate an interfered signal of the M-Z interferometer to test the result. The whole scheme is successfully demonstrated both by numerical simulation and experimental results.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2013年第7期76-81,共6页
Acta Optica Sinica
基金
国家自然科学基金(61177012)
中央高校基本科研业务费(2012YJS009)
关键词
测量
光相位调制器
马赫-曾德尔干涉仪
3×3解调
measurement
optical phase modulator
Mach-Zehnder interferometer
3×3 demodulation
