An arrangement for {HEAD ~ the remote actuation} of a controlled device, e.g. a hydraulic valve, in {TAIL ~ situations} with stringent safety requirements, uses optical power 
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An arrangement for { HEAD ~ the remote actuation } of a controlled device , e.g. a hydraulic valve , in { TAIL ~ situations } with stringent safety requirements , uses optical power
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH