Method for the manufacture of optical gratings

Details Method for the manufacture of optical gratings Method for the manufacture of optical gratings

1996-09-26

1998-06-30

Rodee, Christopher D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 14, 522 28, 522 68, 65385, C08F 246

Patent

active

057734860

ABSTRACT:
The specification describes techniques for the manufacture of optical gratings in optical fibers. The grating pattern is written into the core of the fiber without removing the fiber coating. Coating compositions with high transparency to the actinic (writing) radiation but which are UV curable are described in detail. The coating compositions contain a UV photoinitiator that absorbs sufficient UV radiation to effectively cure the polymer but is relatively transparent to UV radiation used for writing the grating. The photoinitiator is one or more compounds selected from a specified group of aliphatic and cycloaliphatic ketones.

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