The Thomas RECORDING Optical Fibers consist of a core glass and a cladding also made of glass.

Spun Optical Fibers are specialty, highly birefringent optical fibers created by spinning a bow-tie-style, single mode, polarization-maintaining preform during the draw process as opposed to twisting it after drawing.

The DCF13 Double-Clad Fiber features a single mode core and dual cladding structure that allows both single mode and multimode light to propagate through the fiber.

Thorlabs' Polarizing (PZ) fibers, also known as Zing™ fibers, are specialty optical fibers in which one and only one polarization state is allowed to propagate.

Thorlabs offers state-of-the-art ytterbium-doped optical fibers for optical amplifiers, ASE light sources, and high-power pulsed and CW fiber laser applications operating with powers in the milliwatt to over 100 W range and emitting in the 1000 - 1100 nm wavelength region.