Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 39, Issue 7, Pages 2067-2076Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2020.3046741
Keywords
Vertical cavity surface emitting lasers; Optical fiber dispersion; Couplings; Optical fiber theory; Optical fiber networks; Transceivers; Chromatic dispersion; Multimode fiber (MMF); optical fiber communications; optical fiber dispersion; optical fiber theory; optical fibers; optical propagation in dispersive media; semiconductor lasers
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This study introduces a theoretical model and experiments focusing on estimating and measuring MCDI over multimode optical channels using VCSEL transceivers, evaluating the impact on PAM-4 signals and bit error rate performance at data rates between 100 and 112 Gbps. The analysis highlights potential methods to improve the reach of multimode fiber channels.
We present a theoretical model and experiments to estimate and measure the magnitude of modal and chromatic dispersion interaction (MCDI) over multimode optical channels using vertical-cavity surface-emitting laser (VCSEL) based transceivers. The effects of MCDI and bit error rate performance are also evaluated for PAM-4 signals at data rates from 100 Gbps to 112 Gbps. A section of the article is dedicated to the characterization of the spectral coupling between VCSEL and fiber, including a multimode and a VCSEL with a dominant fundamental mode that has shown the potential to increase the reach of MMF channels. For the experiments, several types of OM4 and OM3 fibers, with accurate bandwidth characterization over a broad range of wavelengths were utilized. The reported analysis applies to future Ethernet and Fibre Channel applications requiring >= 100 Gb/s per wavelength over multimode fibers.
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