EMI Coupling Paths and Mitigation in Optical Transceiver Modules
Optical transceiver modules are commonly used in telecommunication and data communication systems, and are among the most troublesome electromagnetic interference (EMI) problems for regulatory compliance at their operation frequencies and/or harmonics. In this study, simulations and measurements are performed on an optical subassembly module, including the silicon photonics submodule assembly, in order to identify and characterize the EMI coupling paths. The total radiated power is measured and computed. Through simulation and corroborating measurements, the dominant EMI coupling paths at high frequencies above 10 GHz are identified and characterized, and currents on the silicon photonic subassembly conductor housing and optical fiber connection ferrule are a dominant radiating source. EMI mitigation methods are developed and shown to be effective in reducing the radiated emissions from real product hardware.
L. Zhang et al., "EMI Coupling Paths and Mitigation in Optical Transceiver Modules," IEEE Transactions on Electromagnetic Compatibility, vol. 59, no. 6, pp. 1848-1855, Institute of Electrical and Electronics Engineers (IEEE), Dec 2017.
The definitive version is available at https://doi.org/10.1109/TEMC.2017.2697761
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
IEEE Electromagnetic Compatibility Society
Keywords and Phrases
Electromagnetic interference (EMI) coupling paths; EMI sources; Mitigation; Optical transceiver modules; Total radiated power (TRP)
International Standard Serial Number (ISSN)
Article - Journal
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