WDM modulator circuit for high energy physics applications

D. Gajanana, M.G. Beuzekom, van, M.K. Smit, X.J.M. Leijtens

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Particle detectors in High Energy Physics experiments provide huge amounts of data which needs to be transported to the data center. Fiber-optic links provide a highcapacity low-mass solution. Howevem~ the petformance of semiconductor lasers used in such links is shown to degrade by the amount of radiation that is generated when particles with high energy collide. We investigate a wavelength-division multiplexing (WDM,) scheme in which only the semiconductor modulators are in the high radiation environment; and test the modulators for radiation hardness. The InP-based WDM modulator circuits are designed .for fabrication on generic integration platforms. The samples will be irradiated with a 23 Me V proton beam at Karlsruhe Institute of Technology (KIT) up to various doses. Here we discuss the system concept and preliminary measurements of non-irradiated samples that will later be compared with the irradiated samples.
Original languageEnglish
Title of host publicationProceedings of the 18th Annual Symposium of the IEEE Photonics Society Benelux Chapter, November 25-26, 2013, Technische Universiteit Eindhoven
EditorsX. Leijtens, D. Pustakhod
Place of PublicationEindhoven
PublisherEindhoven University of Technology
ISBN (Print)978-90-386-3512-5
Publication statusPublished - 2013


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