Photonic instantaneous measurement of microwave frequency using fiber Bragg grating
Photonic instantaneous measurement of microwave frequency using fiber Bragg grating
复制标题
利用光纤布拉格光栅对微波频率进行光子瞬时测量
DOI：
10.1016/j.optcom.2009.10.036
复制
发表时间：
2010-02-01
影响因子：
2.4
通讯作者：
Jin, Xiaofeng
中科院分区：
文献类型：
--
作者：
Li, Ze;Yang, Bo;Jin, Xiaofeng
提出了一种利用光纤光栅实现微波频率瞬时测量的光子学方法。在该方法中，一个频率未知的微波信号被调制在一个光载波上的Mach-Zehnder调制器偏置在最小传输点。通过检测光纤光栅输出端的透射光功率和反射光功率，利用微波频率与透射反射功率比之间的固定关系，可以根据透射反射功率比的大小确定微波频率。已经进行了概念验证实验，其表明在10 GHz测量带宽上实现了+/-0.08 GHz的测量分辨率。在分辨率方面的测量性能优于以前报道的结果。(C)2009 Elsevier B. V.保留所有权利。
A photonic approach to realizing instantaneous measurement of microwave frequency based on optical monitoring using a fiber Bragg grating (FBC) is proposed and demonstrated. In the approach, a frequency-unknown microwave signal is modulated on an optical carrier in a Mach-Zehnder modulator biased at the minimum transmission point. After detecting the transmission and reflection optical powers at the output of the FBG, the microwave frequency can be determined according to the value of transmission-to-reflection power ratio, due to the fixed relationship between the microwave frequency and the power ratio. A proof-of-concept experiment has been performed, which demonstrates that a measurement resolution of +/-0.08 GHz over a 10 GHz measurement bandwidth is achieved. The measurement performance in terms of resolution is better than previously reported results. (C) 2009 Elsevier B.V. All rights reserved.