eprintid: 10204393
rev_number: 6
eprint_status: archive
userid: 699
dir: disk0/10/20/43/93
datestamp: 2025-02-06 11:07:08
lastmod: 2025-02-06 11:07:08
status_changed: 2025-02-06 11:07:08
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Barbosa, FA
creators_name: Ferreira, FM
title: Enhancing the Vertical Resolution of Coherent Optical Receivers
ispublished: pub
divisions: UCL
divisions: B04
divisions: F46
keywords: Optical communications, 
coherent detection, 
digital-to-analog converter, 
analog-to-digital converter, 
effective number of bits
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: The constantly increasing capacity demand in optical fiber transmission systems has driven the development of higher-order modulation to share the cost and power-consumption of optoelectronic components across many bits. However, higher-order modulation imposes challenging requirements on high-speed optoelectronic transceiver components such as on the vertical resolution of analog-to-digital and digital-to-analog converters. State-of-the-art high-speed converters limit the development of next-generation systems above 6 bit/s/Hz/pol at symbol rates beyond 100 Gbaud for Nyquist shaped channels. Ultimately, in the absence of fiber nonlinearity the upper limit on the available signal-to-noise ratio is bounded by the transceiver subsystems. Here we propose a novel optoelectronic technique to enhance the effective vertical resolution of coherent receivers through optical intensity reshaping. Finally, we show that the proposed technique to increase the effective resolution will also boost the performance of digital backpropagation used to mitigate fiber Kerr nonlinear response.
date: 2025
date_type: published
publisher: Institute of Electrical and Electronics Engineers (IEEE)
official_url: https://doi.org/10.1109/jlt.2024.3521296
oa_status: green
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2346744
doi: 10.1109/JLT.2024.3521296
lyricists_name: Marques Ferreira, Filipe
lyricists_name: Barbosa, Fabio Aparecido
lyricists_id: FMARQ88
lyricists_id: FABAR60
actors_name: Marques Ferreira, Filipe
actors_id: FMARQ88
actors_role: owner
full_text_status: public
publication: Journal of Lightwave Technology
pagerange: 1-8
issn: 0733-8724
citation:        Barbosa, FA;    Ferreira, FM;      (2025)    Enhancing the Vertical Resolution of Coherent Optical Receivers.                   Journal of Lightwave Technology     pp. 1-8.    10.1109/JLT.2024.3521296 <https://doi.org/10.1109/JLT.2024.3521296>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10204393/1/EnhaceEnob_vFinal.pdf