Element for {HEAD ~ optical isolator} and optical isolator employing the same, together with {TAIL ~ semiconductor laser module} employing the optical isolator element 
Element for { HEAD ~ optical isolator } and optical isolator employing the same , together with { TAIL ~ semiconductor laser module } employing the optical isolator element
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH