Patent ID: 9684125
Date: 2017-06-20
CPC Classifications: A61B,G02B

Claim:
1. An optical apparatus, comprising: a source of plane-polarized laser-radiation; a hollow-core optical fiber for transporting the radiation from the source to a point of use, the optical fiber having an input end and an output end; a first optical element between the source and the input end of the optical fiber, the element configured and arranged to convert the plane-polarized radiation to radiation which is otherwise polarized for transport through the optical fiber; a second optical element between the output end of the optical fiber and the point of use, the second optical element configured to convert the otherwise-polarized, transported radiation back to plane-polarized radiation: and a polarization rotator between the second optical element and the point of use, for rotating the polarization plane of the converted plane-polarized radiation to a desired polarization plane.