Modal noise improvement in 10-Gb/s offset launch in multimode fiber link with multimode fiber taper

Authors

Mike Nix, Department of Electrical and Computer Engineering Queen’s University Kingston, ON, Canada
Chen Qian, Department of Electrical and Computer Engineering Queen’s University Kingston, ON, Canada
Scott S.-H. Yam, Department of Electrical and Computer Engineering Queen’s University Kingston, ON, CanadaFollow
Lisa Huff, Advanced Design and Applications Data Communications Competence Center Nexans Inc New Holland, PA, USA

Abstract

Implementing the newest IEEE 802.3 Ethernet standards and updating older systems to meet those standards requires the use of laser diodes to maintain a high bandwidthdistance product through the multimode fiber link. However, due to the high coherence of such sources, link performance can be severely impaired by modal noise. In this paper the use of a multimode fiber taper to reduce modal noise in a 220 or 300 m, 10 Gb/s IEEE 802.3aq-compliant link is investigated. It was found that by inserting the taper at the input of the multimode fiber link, modal noise improvement was seen at different singlemode transverse launch offsets with a maximum signal-to-modalnoise ratio improvement of 8 dB being observed.

Recommended Citation

Nix, Mike; Qian, Chen; Yam, Scott S.-H.; and Huff, Lisa (2024) "Modal noise improvement in 10-Gb/s offset launch in multimode fiber link with multimode fiber taper," American Journal of Electronics & Communication (AJEC): Vol. 1: Iss. 1, Article 2.
Available at: https://research.smartsociety.org/ajec/vol1/iss1/2