Title :
Sensitivity Enhancement Method for Electro-optic Sensor without Balanced Detection
Author :
Sasagawa, Kiyotaka ; Tsuchiya, Masahiro
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Tokyo
Abstract :
We demonstrate a highly sensitive electro-optic (EO) sensing system without balanced detection, which is often employed for sensitivity enhancement. In the present method, sensitivity improvement is realized by modulation depth enhancement based on carrier reduction. This technique allows to increase EO signal intensity with constant received optical power. The sensitivity of 0.23 mV/Hz1/2 is achieved, which is as high as that of balanced detection
Keywords :
electro-optical modulation; optical sensors; EO signal intensity; carrier reduction; electro-optic sensor; modulation depth enhancement; sensitivity enhancement method; Electrooptic devices; Electrooptic modulators; Intensity modulation; Noise level; Noise reduction; Optical modulation; Optical noise; Optical saturation; Optical sensors; Radio frequency; Pockels effect; electro-magnetic field measurement; electro-optic imaging;
Conference_Titel :
Microwave Photonics, 2006. MWP '06. International Topical Meeting on
Conference_Location :
Grenoble
Print_ISBN :
1-4244-0203-4
Electronic_ISBN :
1-4244-0204-2
DOI :
10.1109/MWP.2006.346560
