Circulators act similarly to isolators. Where isolators allow propagation in one direction only, circulators allow a signal to propagate from one port to the next clockwise port only.
Laser 2000 circulators have 3 port options with a range of wavelengths and connectors.
Polarisation independent circulator, 1310 nm, 35 dB min isolation
Polarisation independent circulator, 1550 nm, 35 dB min isolation
Polarisation independent circulator, 1310 nm, 40 dB min isolation
Polarisation independent circulator, 1550 nm, 40 dB min isolation
Wideband polarisation independent circulator, 1470-1610, 30/38 dB isolation
Polarisation Maintaining Circulator, 1310 nm, 20 dB min isolation
Polarisation Maintaining Circulator, 1550 nm, 20 dB min isolation
Polarisation Maintaining Circulator, 1064 nm, 25 dB min isolation
Polarisation Maintaining Circulator, 1310 nm, 40 dB min isolation
Polarisation Maintaining Circulator, 1550 nm, 40 dB min isolation