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Simulation study on optoelectronic oscillator based simultaneous V – band and terahertz signal generation

ANU SAM1,* , M. GANESH MADHAN1

Affiliation

  1. Department of Electronics Engineering, Madras Institute of Technology, Anna University, Chennai-600044, India

Abstract

Wideband optical frequency comb(OFC) generation based on 2 stage electroabsorption modulator(EAM)with tunable frequency spacing is proposed.A tunable opto electronic oscillator(OEO) forms the basis of this scheme,where V band millimeter waves(57GHz-64GHz) are generated in the first stage.Optical bandwidth of 4.3THz is derived by combining the first stage OFC and a laser output,which is then modulated by an EAM.The frequency distinction between the two lasers is chosen, so that 110 comb lines within 6dB power variations are generated, with a frequency spacing of 44GHz.This scheme provides a simple structure for generating comb lines with an Optical signal to noise ratio(OSNR) of 35dB.The highlight of this work is the simultaneous generation of V band millimeter waves(57GHz-64GHz) and terahertz waves based on OEO without an electrical filter.This scheme can find application in 5G and future communication systems,as an optoelectronic tunable millimeter (mm)wave source..

Keywords

Optical frequency comb (OFC), Electroabsorption modulator(EAM), Wavelength selective switch (WSS), V band, Millimetre waves (mm waves), and Terahertz generation.

Submitted at: April 22, 2024
Accepted at: Dec. 2, 2024

Citation

ANU SAM, M. GANESH MADHAN, Simulation study on optoelectronic oscillator based simultaneous V – band and terahertz signal generation, Journal of Optoelectronics and Advanced Materials Vol. 26, Iss. 11-12, pp. 457-465 (2024)