Experimental demonstration of single-span 100-km O-band 4×50-Gb/s CWDM direct-detection transmission

We report on what is to the best of our knowledge the longest 50-Gb/s/λ O-band wavelength-division multiplexed (WDM) transmission. A pair of in-house built bismuth-doped fiber amplifiers (BDFAs) and the use of Kramers-Kronig detection-assisted single-sideband transmission are adopted to overcome the...

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Published in:Optics express 2022-08, Vol.30 (18), p.32189-32203
Main Authors: Hong, Yang, Taengnoi, Natsupa, Bottrill, Kyle R. H., Thipparapu, Naresh K., Wang, Yu, Sahu, Jayanta K., Richardson, David J., Petropoulos, Periklis
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container_end_page 32203
container_issue 18
container_start_page 32189
container_title Optics express
container_volume 30
creator Hong, Yang
Taengnoi, Natsupa
Bottrill, Kyle R. H.
Thipparapu, Naresh K.
Wang, Yu
Sahu, Jayanta K.
Richardson, David J.
Petropoulos, Periklis
description We report on what is to the best of our knowledge the longest 50-Gb/s/λ O-band wavelength-division multiplexed (WDM) transmission. A pair of in-house built bismuth-doped fiber amplifiers (BDFAs) and the use of Kramers-Kronig detection-assisted single-sideband transmission are adopted to overcome the fiber loss and chromatic dispersion, respectively, in a reach-extended O-band coarse WDM (CWDM) system with a channel spacing of ∼10 nm. Through experiments on an amplified 4×50-Gb/s/λ direct-detection system based on booster and pre-amp BDFAs, we show the superior performance of single-sideband transmission in terms of both optical signal-to-noise ratio sensitivity and uniformity in performance amongst CWDM channels relative to double-sideband transmission after both 75-km and 100-km lengths of single-mode fiber. As a result, up to 100-km reach with comparable performance at all 50-Gb/s channels was achieved without the need for in-line optical amplification.
doi_str_mv 10.1364/OE.457985
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title Experimental demonstration of single-span 100-km O-band 4×50-Gb/s CWDM direct-detection transmission
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