Head noun: edfa

Same concepts
http://dbpedia.org/resource/Optical_amplifier

Broader concepts

labelprovenanceconfidence
optical amplifierisap:2869763730.446402
amplifierisap:2869763760.256497
systemisap:3079167300.141913
optical amplifiersisap:1887770350.125916

Narrower concepts

labelprovenanceconfidence