" METHOD FOR SELECTIVE PHOTOSENSITIZATION OF OPTICAL FIBER”
Application 1370/CHENP/2004 published 2006-02-03, filed 2004-06-18
A method for increasing the photosensitivity of a selected portion of an optical fiber and for producing a grating in the selected portion of an optical fiber. The method includes the step of placing the selected portion of the optical fiber in a hydrogen containing atmosphere. The volume of the hydrogen-containing atmosphere immediately surrounding only the selected portion of the optical fiber is heated to a temperature of at least 250°C. Only the selected portion of the optical fiber is exposed to the heated volume of the hydrogen-containing atmosphere at a temperature of at least 250°C for a predetermined time.
Applicant
3M INNOVATIVE PROPERTIES COMPANY
3M Center, Post Office Box 33427, Saint Paul, MN 55133-3427, USA.
Inventor
International Info
Classification: G02B 6/38, 6/16, C03C 25/62
Publication Number: PCT/US02/34356
Priority Information
10/028,837 USA 2001-12-20