Method and apparatus for writing a Bragg grating in a waveguide
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 22, 2003
Grant Date -
Nov 22, 2001
app pub date -
Mar 29, 2001
filing date -
Mar 30, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In order to create a diffraction grating in an optical fiber with a predetermined pattern of the refractive index, an ultraviolet radiation beam (3) is scanned (5, 8) along a phosensitive portion (F') of the fiber through a phase mask (9) and, during the scan, the beam intensity (4) and the mask-fiber distance (10) are controlled moment by moment in such a way as to obtain the desired patterns of the mean value and of the envelope of the refractive index, respectively.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully