Patent ID: 8861907
Filing Date: 2014-10-14
Classification: A61B,C03B,G02B

Abstract:
1. An apparatus, comprising: an optical fiber including a surface non-normal to a longitudinal axis of a distal end portion of the optical fiber, wherein the surface defines a portion of an interface configured to redirect electromagnetic radiation propagated from within the optical fiber and incident on the interface in a direction offset from the longitudinal axis; a doped silica cap, the doped silica cap being coupled to the optical fiber such that the surface of the optical fiber is disposed within a cavity defined by the doped silica cap; and an outer cover coupled to the doped silica cap, the outer cover including a transmissive material aligned with the direction such that the electromagnetic radiation is transmitted through the transmissive material in the direction, wherein the outer cover is substantially opaque to electromagnetic radiation transmitted from the optical fiber other than in the direction.