Resonant Point Tracking and Locking Technique
Microsphere resonator is widely studied for the high quality factor Q and small mode volume.Aimed at the sensor applications,the resonant point tracking and locking method is proposed for measuring the resonant frequency shift.To avoid external noises,such as air flow and vibration,spot-packaged coupling structure is adopted.The robustness of microsphere-taper coupling unit is greatly improved.And this lays a foundation for resonant point tracking and locking.By employing modulation method,the demodulation signal is obtained.To lock the laser frequency to resonant point,PID circuits will adjust the center frequency of laser until the intensity of demodulation signal becomes zero.In the experiment,resonant tracking and locking is realized on the rotating platform with rotation rate 2 r/s.
Microsphere resonator Tracking and locking, Spot-package Modulation method
Xu pengfei Zhang jianhui Ma kezhen Zhang wendong Yan shubin
Science and Technology on Electronic Test & Measurement Laboratory,North University of China, Taiyuan, Shanxi, China;Key Laboratory of Instrumentation Science and Dynamic Measurement, Ministry of Education,North University of China, Taiyuan, Shanxi, China
国际会议
中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)
杭州
英文
1-6
2012-11-04（万方平台首次上网日期，不代表论文的发表时间）