Experimental Evaluation of Transmission of C+L+U Bands Over an Unrepeatered Link
Year: 2025
Type: article
Abstract: We investigate the potential to expand the trans mission bandwidth beyond the C-band to include the L- and U bands over an unrepeatered link. We characterize three fibers- a G.654 compliant Sumitomo Z+ fiber, a G.657 compliant Corning SMF28ULTRA fiber, and a G.652 compliant OFS AllWave Zero Water Peak (ZWP) fiber- for their attenuation profiles and Raman gain efficiencies in the L- and U-bands. We demonstrate the transmission of C+L+U bands over an unrepeatered link of 257.1 km. The transmission system includes band-specific erbium-doped fiber amplifiers for the C- and L- bands, lumped Raman amplifiers for the U-band, and bidirectional distributed Raman amplification for the three bands. We report a decoded data-rate of 84.5 Tb/s over a spectral bandwidth of 109.2 nm using 520 polarization-multiplexed 16-ary quadrature amplitude modulated channels across C+L+U bands. We investigate ways to manage the effects of stimulated Raman scattering while expanding the transmission window beyond 100 nm over an unrepeatered link.
Source: Journal of Lightwave Technology
Authors: Divya A. Shaji, Ruben S. Luís, Daniele Orsuti, Lucas A. Zischler, Benjamin J. Puttnam, Manuel S. Neves, Budsara Boriboon, Giammarco Di Sciullo, Qi Wu, Mingming Tan, Dini Pratiwi, Aleksandr Donodin, Ian Phillips, Wladek Forysiak, Luca Palmieri, Fernando P. Guiomar, Paulo P. Monteiro, Antonio Mecozzi, Cristian Antonelli, Hideaki Furukawa
Language: English
Topic: Optical Network Technologies
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,645
OpenAlex ID: W4416922371