Details

Autor(en) / Beteiligte

• Shoeib, Afsaneh
• Fernández, Manuel P
• Rowe, Connor
• Maram, Reza
• Ricciardi, Pasquale
• Azaña, José

Titel

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

Ist Teil von

• Optics letters, 2024-03, Vol.49 (5), p.1245-1248

Ort / Verlag

United States: Optical Society of America

Erscheinungsjahr

2024

Quelle

Optica Publishing Group Journals (Optical Society)

Beschreibungen/Notizen

• 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.