Title :
A flexible wide bandwidth electro-optic probing system using a recirculating frequency shifter
Author :
Gouhier, Benoit ; Ka Lun Lee ; Nirmalathas, Ampalavanapillai ; Lim, Chong-U ; Skafidas, E.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia
Abstract :
In this paper, we study the performance of a wide-bandwidth electro-optic probing system based on an optical comb generated with a recirculating frequency shifter. The system beats a single harmonic from the optical comb with an optical sideband from a RF signal to yield a lower frequency wave. The use of a tunable laser, tunable optical filters and single-sideband modulator gives the system a great flexibility, potentially allowing to down-convert THz frequencies down to a few GHz. Noise floor, IF signal bandwidth and coherence length are studied.
Keywords :
electro-optical filters; electro-optical modulation; laser tuning; optical frequency combs; IF signal bandwidth; RF signal; THz frequencies; coherence length; flexible wide bandwidth electro-optic probing system; frequency wave; noise floor; optical comb; optical sideband; recirculating frequency shifter; single harmonic; single-sideband modulator; system beats; tunable laser; tunable optical filters; wide-bandwidth electro-optic probing system; Bandwidth; Electrooptic modulators; Harmonic analysis; Noise; Optical attenuators; Optical mixing;
Conference_Titel :
Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP), 2014 International Topical Meeting on
Conference_Location :
Sapporo
DOI :
10.1109/MWP.2014.6994565
