Fiber Optic Circulators

Thorlabs’ Optical Circulators are non-reciprocating, one-directional, three port devices which are great for bidirectional propagation of light in a single fiber. Our Single Mode (SM) and Polarization-Maintaining (PM) Circulators are ideal for advanced communication systems and fiber sensor applications. Our single mode circulators also include a broadband circulator for OCT. Our Wideband Multimode Circulators (WMC) are mode insensitive and operational across a wide range of wavelengths, enabling a variety of light sources to be used in fluorescence, spectroscopy, and optogenetics applications.