... systems. CATEGORY: 1310nm&1550nm 3port polarization maintaining optical circulator(POLARIZATION MAINTAINING(PM)CIR),single stage, fast axis ... ,both axis working. 1064nm 3port polarization maintaining optical circulator(POLARIZATION MAINTAINING(PM)CIR) ,single stage, both ... nm POLARIZATION MAINTAINING(PM) Isolator Circulator --- 1550nm 3-Port Circulator --- 1550nm 4-Port Circulator --- 1550 nm 3-Port ...