Experimental Evaluation of Transmission of C+L+U Bands Over an Unrepeatered Link
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.
Authors
- Lucas Alves Zischler (ORCID: https://orcid.org/0000-0003-4757-6085)
- Budsara Boriboon (ORCID: https://orcid.org/0000-0001-7301-3599)
- Paulo P. Monteiro (ORCID: https://orcid.org/0000-0003-4664-9238)
- Benjamin J. Puttnam (ORCID: https://orcid.org/0000-0002-1210-0901)
- Antonio Mecozzi (ORCID: https://orcid.org/0000-0001-8730-5699)
- Mingming Tan (ORCID: https://orcid.org/0000-0002-0822-8160)
- Manuel S. Neves (ORCID: https://orcid.org/0000-0002-9804-2713)
- Cristian Antonelli (ORCID: https://orcid.org/0000-0002-3353-7889)
- W. Forysiak (ORCID: https://orcid.org/0000-0001-5411-1193)
- Giammarco Di Sciullo (ORCID: https://orcid.org/0009-0006-8286-2377)
- Ian Phillips (ORCID: https://orcid.org/0000-0002-2776-8939)
- Fernando P. Guiomar (ORCID: https://orcid.org/0000-0001-6404-8431)
- Aleksandr Donodin (ORCID: https://orcid.org/0000-0002-5715-1438)
- Qi Wu (ORCID: https://orcid.org/0000-0002-1196-226X)
- Luca Palmieri (ORCID: https://orcid.org/0000-0001-7187-570X)
- Daniele Orsuti (ORCID: https://orcid.org/0000-0002-5526-0358)
- Divya A. Shaji (ORCID: https://orcid.org/0009-0008-0619-5204)
- Hideaki Furukawa
- Dini Pratiwi
- Ruben S. Lu ́ıs
Institutions
- University of Padua (IT)
- Aston University (GB)
- University of L'Aquila (IT)
- University of Bristol (GB)
- Instituto de Telecomunicações (PT)
- University of Aveiro (PT)
- National Institute of Information and Communications Technology (JP)
Publication Details
- Journal
- Journal of Lightwave Technology
- Published
- 2025-12-02
- DOI
- https://doi.org/10.1109/jlt.2025.3639075
- Primary Topic
- Optical Network Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00