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...

Full description

Saved in:
Bibliographic Details
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
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.509441