Head noun: edfa
| Same concepts | 
|---|
| http://dbpedia.org/resource/Optical_amplifier | 
Broader concepts
| label | provenance | confidence | 
|---|---|---|
| optical amplifier | isap:286976373 | 0.446402 | 
| amplifier | isap:286976376 | 0.256497 | 
| system | isap:307916730 | 0.141913 | 
| optical amplifiers | isap:188777035 | 0.125916 | 
Narrower concepts
| label | provenance | confidence | 
|---|