Opto isolator that uses {HEAD ~ a nontransparent hollow tube} as the optical waveguide extending between the transmitter and receiver modules of {TAIL ~ the opto isolator} 
Opto isolator that uses { HEAD ~ a nontransparent hollow tube } as the optical waveguide extending between the transmitter and receiver modules of { TAIL ~ the opto isolator }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL