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About

About

I am a PhD student at the MAP-Tele Doctoral Programme in Telecommunications and a researcher at INESC TEC, in the CTM group. My main interests include optical fiber communication systems, specifically nonlinearity mitigation techniques and multimode fibers. My thesis proposal is entitled "Phase-Conjugated Twin Waves for Space-Division Multiplexed Systems", where I proposed to study spectrally efficient PCTW techniques to overcome the spectral efficiency loss inherent to the PCTW technique. 

Interest
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Details

Details

002
Publications

2022

A Gaussian Window for Interference Mitigation in Ka-band Digital Beamforming Systems

Authors
Tavares, JS; Avelar, HH; Salgado, HM; Pessoa, LM;

Publication
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022

Abstract

2021

iBROW

Authors
Tavares, JS; Watson, S; Zhang, W; Figueiredo, JML; Cantu, HI; Wang, J; Al-Khalidi, A; Kelly, AE; Wasige, E; Salgado, HM; Pessoa, LM;

Publication
Springer Series in Optical Sciences - THz Communications

Abstract

2020

5.36 Gbit/s OFDM optical wireless communication link over the underwater channel

Authors
Araujo, JH; Kraemer, R; Tavares, JS; Pereira, F; Salgado, HM; Pessoa, LM;

Publication
2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2020

Abstract
An OFDM transmission system is reported based on a directly modulated blue LASER diode, for high bit rate under-water optical communication applications. The 256 subcarriers 16-QAM signal is transmitted over a total distance of 2.4 m underwater with an EVM lower than -28.5 dB for a 250 MHz bandwidth and -16.5 dB for a 2 GHz bandwidth, the BER being lower than the forward error corrector limit. At the maximum bandwidth of 2 GHz a transmission rate of 5.36 Gbit/s is achieved. © 2020 IEEE.

2019

Resonant tunneling diode photodetectors for optical communications

Authors
Watson, S; Zhang, WK; Tavares, J; Figueiredo, J; Cantu, H; Wang, J; Wasige, E; Salgado, H; Pessoa, L; Kelly, A;

Publication
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS

Abstract
Optical modulation characteristics of resonant tunneling diode photodetectors (RTD-PD) are investigated. Intensity modulated light excites the RTD-PDs to conduct data experiments. Simple and complex data patterns are used with results showing data rates up to 80 and 200 Mbit/s, respectively. This is the first demonstration of complex modulation using resonant tunneling diodes. © 2019 The Authors. Microwave and Optical Technology Letters published by Wiley Periodicals, Inc.

2019

Optical direct intensity modulation of a 79GHz resonant tunneling diode-photodetector oscillator

Authors
Zhang, WK; Watson, S; Figueiredo, J; Wang, J; Cantu, HI; Tavares, J; Pessoa, L; Al Khalidi, A; Salgado, H; Wasige, E; Kelly, AE;

Publication
OPTICS EXPRESS

Abstract