High-precision optical phase-locking based on wideband acousto-optical frequency shifting  

作　　者：王云祥 邱琪 史双瑾 苏君 廖云 熊彩东 

机构地区：[1]School of Optoelectronic Information,University of Electronic Science and Technology of China

出　　处：《Chinese Optics Letters》2014年第2期38-41,共4页中国光学快报（英文版）

基　　金：supported by the Fundamental Research Funds for the Central Universities(No.ZYGX2010J059);the National Natural Science Foundation of China(No.61308041)

摘　　要：We present a high-precision optical phase-locking based on wideband acousto-optical frequency shifting.Increasing the modulating bandwidth stabilizes the loop at a high loop gain,thus improving phase correction capability.An optical phase-locked loop with a wide control bandwidth is constructed.The closed-loop residual phase error is only 0.26°or smaller than λ/1000.The loop exhibits excellent correction capability for high-frequency noises.The correctable frequency range reaches 35 kHz when the noise amplitude is ±λ/2,and becomes even wider for smaller noise amplitudes.We present a high-precision optical phase-locking based on wideband acousto-optical frequency shifting.Increasing the modulating bandwidth stabilizes the loop at a high loop gain,thus improving phase correction capability.An optical phase-locked loop with a wide control bandwidth is constructed.The closed-loop residual phase error is only 0.26°or smaller than λ/1000.The loop exhibits excellent correction capability for high-frequency noises.The correctable frequency range reaches 35 kHz when the noise amplitude is ±λ/2,and becomes even wider for smaller noise amplitudes.

关 键 词：Amplitude modulation Locks (fasteners) Optical materials Phase locked loops 

分 类 号：TN248[电子电信—物理电子学]