1550nm POLARIZATION MAINTAINING(PM) isolator(300mw,1w,2w,5w,10w,20w) Ruik’s(Ruik-tech Communication Co.,ltd ... 1480nm,1550nm) single/dual stage polarization maintaining(PM) isolator,5W, 1064nm(1310nm,1480nm,1550nm) single/dual stage polarization maintaining ... (PM) isolator,10W, 1064nm(1310nm,1480nm,1550nm) single/dual stage polarization maintaining ...