Title :
Modulation depth enhancement for highly sensitive electro-optic RF near-field measurement
Author :
Sasagawa, K. ; Tsuchiya, M.
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Tokyo
Abstract :
A modulation depth enhancement technique for highly sensitive electro-optic (EO) sensing of RF near-fields is presented. This technique increases EO signal intensity without increasing total power received by a photodiode (PD). Therefore, sensitivity limitation owing to saturation of the PD can be avoided. Sensitivity improvement of 20 dB compared to the conventional configuration is successfully achieved
Keywords :
electro-optical modulation; optical modulation; photodiodes; electrooptic sensing; modulation depth enhancement; photodiode; radiofrequency near-field measurement;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20062557
