%0 Journal Article
%T An Isotropic Electric-Field Sensing System Using Optical Probe
%A YANG Yong-Jun
%A CHEN Fu-Shen
%A SUN Bao
%A <br>杨拥军
%A 陈福深
%A 孙豹
%J 中国物理快报
%D 2007
%I 
%X We design an isotropic electric-field sensing system using an optical probe. The optical probe consists of three electric-field sensors based on a Mach-Zehnder interferometer with the structure of segmented electrodes, which are perpendicular to each other. The measured results show that the ±5 dB baseband can reach 3 GHz, the linear dynamics range is 70dB, and the minimum detectable electric field is lower than 90 dBμ V/m （the spectrum analyser resolution is 100 Hz）. The directional characteristics are almost isotropic within deviations of ±1.5 dB. Therefore this sensing system can be used in the electromagnetic compatibility measurements.
%K 42
%K 68
%K Wt
%K 42
%K 81
%K Pa
%K 42
%K 82
%K Bq<br>光信息处理
%K 光纤维
%K 光学
%K 光具理论
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=A6F1F92187EC7BB8DE218C1525F68EC4&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=E158A972A605785F&sid=78AF84DBB4041008&eid=F131C0ADC94A25CF&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0