Avoiding beam obstruction during inscription of fiber gratings

摘要

The present disclosure provides systems and methods for avoiding beam obstructions during inscription of fiber gratings. For some embodiments, an optical fiber is re-oriented during fiber inscription to avoid obstruction of the actinic beam.

主权项

1. In an optical fiber having obstructions in which an obstruction length, a number of obstructions, and a regularity of the obstructions is known, a method comprising:
exposing a first location of a core of an optical fiber to incoming actinic radiation, the incoming actinic radiation to inscribe the first location with a grating, the inscribed grating having a finite length; axially moving the optical fiber an incremental distance, the incremental distance being less than the finite length; changing a rotational orientation of the optical fiber with reference to a source of the incoming actinic radiation by a predefined angle of rotation, the predefined angle being a function of the obstruction length, the number of obstructions, and the regularity of the obstructions; and exposing a second location of the core with the incoming actinic radiation.