Technique to Prepare High-Reflectance Optical Fiber Bragg Gratings with Single Exposure In-Line on Fiber Draw Tower.
Patent Application, Filed 21 Jan 93,
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A process for making an optical reflection grating in a glass fiber includes exposing an unjacketed optic fiber to a single writing pulse from a pair of interfering light beams that form an interference pattern in the fiber. A novel optical fiber has at least one optical grating with a preselected Bragg spacing in at least one region of the fiber, with a periodic modulation in its index of refraction, with high thermal stability and narrow linewidth. A process for making an array of optical reflection gratings in a glass fiber includes exposing a fiber to a plurality of writing pulse from a pair of interfering light beams that form an interference pattern in the fiber, where these pulses are applied sequentially as the fiber is drawn from a draw furnace. A novel optical fiber has a plurality of unspliced gratings with high thermal stability and narrow linewidth. Author
- Atomic and Molecular Physics and Spectroscopy
- Refractory Fibers