Radiation Physics and EMI Coupling Path Determination for Optical Links


Optical transceiver modules are used in high-end and low-end switches and routers. These modules, located in the optical i/o ports at the front-end of the system chassis, can contribute significantly to the system level EMI at high frequencies. In this paper, a mode stirred reverberation chamber (RC) is used to analyze the EMI performance of the optical modules. Three EMI leakage points are identified from the optical i/o ports. Using the results from four experimental configurations, coupling paths and unintentional current paths are proposed for the optical link. This can help provide insight to EMC design engineers about the radiation physics associated with optical links and potential mitigation solutions.

Meeting Name

2014 IEEE International Symposium on Electromagnetic Compatibility (2014: Aug. 4-8, Raleigh, NC)


Electrical and Computer Engineering

Research Center/Lab(s)

Center for High Performance Computing Research

Second Research Center/Lab

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

Electromagnetic compatibility; Optical links; Optical transceivers; Reverberation; Coupling paths; Current paths; High frequency HF; Mode stirred reverberation chamber; Optical modules; Optical transceiver modules; Radiation physics; System levels; Optical switches

International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version


File Type





© 2014 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

08 Aug 2014