Fiber-optic spectrum monitoring of wavelength-division-multiplexed telecommunication signals with MHz update rates

We propose a novel (to our knowledge) and simple real-time optical monitoring (RTOM) system for dynamic spectral analysis of telecommunication signals, involving electro-optic (EO) temporal sampling followed by dispersion-induced frequency-to-time mapping and high-speed photodetection. This system e...

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Published in:Optics letters 2024-03, Vol.49 (5), p.1245-1248
Main Authors: Shoeib, Afsaneh, Fernández, Manuel P, Rowe, Connor, Maram, Reza, Ricciardi, Pasquale, Azaña, José
Format: Article
Language:English
Subjects:
C band
Data transmission
Fiber optics
Frequencies
Signal monitoring
Spectrum analysis
Wavelength division multiplexing
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container_end_page 1248
container_issue 5
container_start_page 1245
container_title Optics letters
container_volume 49
creator Shoeib, Afsaneh
Fernández, Manuel P
Rowe, Connor
Maram, Reza
Ricciardi, Pasquale
Azaña, José
description We propose a novel (to our knowledge) and simple real-time optical monitoring (RTOM) system for dynamic spectral analysis of telecommunication signals, involving electro-optic (EO) temporal sampling followed by dispersion-induced frequency-to-time mapping and high-speed photodetection. This system enables tracking of the presence and relative intensity of multiple wavelength-division-multiplexed (WDM) data streams that span over a broad frequency band with high resolution, accuracy, and fast measurement update rates. We derive the design conditions and trade-offs of the proposed scheme and report proof-of-concept experiments and a numerical result that demonstrate successful spectral monitoring of dense-WDM signals with different modulation formats and bit rates, over the full C-band, with the needed resolution to discern channels separated by a few tens of GHz, and with an unprecedented fast measurement update rate in the MHz range.
doi_str_mv 10.1364/OL.509441
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source Optica Publishing Group Journals
subjects C band
Data transmission
Fiber optics
Frequencies
Signal monitoring
Spectrum analysis
Wavelength division multiplexing
title Fiber-optic spectrum monitoring of wavelength-division-multiplexed telecommunication signals with MHz update rates
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