Title: Bleaching mask
Application Number: 95107664 Application Date: 1995.06.22
Publication Number: 1125850 Publication Date: 1996.07.03
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G02B6/13;G03F7/00;G03F7/095
Applicant(s) Name: Akzo Nobel N.V. Address:
Inventor(s) Name: Tsjerk Hans Hoekstra
Attorney & Agent: SUN AI
Abstract:
    The invention concerns a method of making a polymeric optical waveguide component employing a waveguiding material susceptible to a change of refractive index when subjected to irradiation of the proper wavelength, i.e. a bleachable polymer, in which the mask used for defining the areas to be bleached is in the form of a developed photoresist that is not substantially transparent to the irradiation wavelength. Thus, a simplified process is provided by which a pattern of laterally defined waveguide channels can be made in a polymeric optical waveguide. The photoresist substantially absorbs the wavelength used for bleaching. This may be accomplished by employing dye molecules which absorb energy of the proper wavelength.
Time: 9
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