Patent ID: 11886052
Assignee: NLIGHT, INC.
Field: Optics (Instruments)
Classification: CPC G  B  H  Y | IPC B  G  H

Claim 1:
2. An optical beam delivery system, comprising:
a length of optical fiber comprising a first confinement region having a central core and a second confinement region having an annular core encompassing the first confinement region; and
a perturbation device operable to perturb the length of optical fiber to shift a beam from the central core to the second confinement region to form a donut-shaped intensity distribution, wherein the second confinement region maintains the donut-shaped intensity distribution wherein the length of optical fiber includes a first length of optical fiber and a second length of optical fiber, wherein the first length of optical fiber has a third confinement region, the second length of optical fiber has the first confinement region and the second confinement region, and the first length of optical fiber is coupled to provide guiding from the first length of optical fiber to the second length of optical fiber.