Process for producing flexible optical waveguide

Details Process for producing flexible optical waveguide Process for producing flexible optical waveguide

2006-10-10

2006-10-10

Pak, Sung (Department: 2874)

Optical waveguides

Planar optical waveguide

C385S131000

Reexamination Certificate

active

07120345

ABSTRACT:
The present invention provides a process for producing a flexible optical waveguide which comprises the steps of: immersing a substrate having an optical waveguide formed thereon in water to thereby reduce adhesion between the optical waveguide and the substrate and then peeling the optical waveguide from the substrate; temporarily bonding the peeled optical waveguide to a surface of a pressure-sensitive adhesive layer containing a foaming agent; cutting the temporarily bonded optical waveguide into a given length; allowing the foaming-agent-containing pressure-sensitive adhesive layer after the cutting step to foam by heating, thereby reducing adhesion between the foaming-agent-containing pressure-sensitive adhesive layer and the optical waveguide; and peeling the optical waveguide cut into the given length from the foamed adhesive layer.

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Tohru Matsuura et al., (1999) “Heat-resistant flexible-film optical waveguides from fluorinated polyimides”, Applied Optics, vol. 38, No. 6, pp. 966-971.
European Search Report dated Dec. 21, 2005.

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