Methods and apparatus related to a side-fire member having a doped silica component

摘要

In one embodiment, an apparatus may include an optical fiber that may have a surface non-normal to a longitudinal axis of a distal end portion of the optical fiber. The surface may define a portion of an interface configured to redirect electromagnetic radiation propagated from within the optical fiber and incident on the interface to a direction offset from the longitudinal axis. The apparatus may also include a doped silica cap that may be fused to the optical fiber such that the surface of the optical fiber may be disposed within a cavity defined by the doped silica cap.

主权项

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; an intermediate cap fused to an outer-layer portion of the optical fiber such that the surface of the optical fiber is disposed within a cavity defined by the intermediate cap, wherein the intermediate cap is a fluorine-doped silica cap, and the fluorine doped silica cap includes a concentration of fluorine greater than a concentration of fluorine of the outer-layer portion of the optical fiber; and an outer cap coupled to the intermediate cap, wherein the outer cap includes an opening aligned with the direction such that the electromagnetic radiation is transmitted through the opening.