%0 Journal Article
%T Phase noise detection method in fiber lasers based onphase modulation and demodulation<br>基于相位调制-解调的光纤激光相位噪声检测方法研究
%A Wang Xiao-Lin
%A Zhou Pu
%A Ma Yan-Xing
%A Ma Hao-Tong
%A Li Xiao
%A Xu Xiao-Jun
%A Zhao Yi-Jun
%A <br>王小林
%A 周朴
%A 马阎星
%A 马浩统
%A 李霄
%A 许晓军
%A 赵伊君
%J 物理学报
%D 2011
%I 
%X In coherent combination of active phase control, there have existed three main phase detection techniques until now, they are heterodyne phase detection technique, multi-dithering technique and stochastic parallel gradient descent algorithm. A new phase detection method based on phase modulation and demodulation is proposed according to the principle of heterodyne phase detection and multi-dithering technique. Periodic phase modulation signal is implemented on a reference laser, and the coherent detection is carried on between the reference laser and the signal laser. With some processing of the modulation signal and the coherent detected optoelectronic signal, the phase noise is detected and the noise compensation can be realized. Numerical simulation and experimental studies are conducated. Experimental results show that the phase detection accuracy is higher than 1/50 wavelength and the average phase compensation residual error is less than 1/50 wavelength in the case of a 2 kHz sine wave phase noise with a phase region of
%K fiber laser
%K coherent combination
%K phase noise detection
%K modulation-demodulation<br>光纤激光
%K 相干合成
%K 相位噪声检测
%K 调制-解调
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=95DC14E13B3C2ACC7BE15DF2B0746D1D&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=5D311CA918CA9A03&sid=690970ED1327F4A7&eid=690970ED1327F4A7&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=30