The 1053nm 3-port Optical Circulator from OF-Link Communications is a Fiber Optic Circulator with Directivity 50 dB, Insertion Loss 1.8 to 2.3 dB, Isolation 20 to 25 dB, Operating Temperature 0 to 70 Degree C, Optical Power 300 mW. More details for 1053nm 3-port Optical Circulator can be seen below.