Recirculating Frequency Shifter-Based Hybrid Electro-Optic Probing System with Ultra-Wide Bandwidth

Benoît J. GOUHIER  Ka-Lun LEE  Ampalavanapillai NIRMALATHAS  Christina LIM  Efstratios SKAFIDAS  

IEICE TRANSACTIONS on Electronics   Vol.E98-C   No.8   pp.857-865
Publication Date: 2015/08/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E98.C.857
Type of Manuscript: Special Section PAPER (Special Section on Microwave Photonics)
Category: MWP Sensing Technique
electro-optic,  terahertz,  THz,  microwave photonics,  recirculating frequency shifter,  

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In this paper, we present a new electro-optic (EO) probing system based on heterodyne detection. The use of a recirculating frequency shifter allows to expand the bandwidth of the system far beyond what is attainable with a conventional heterodyne EO set-up. The performance for the frequencies up to 50GHz is analysed to forecast the viability of the system up to the THz range.