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1. (WO2001037049) PHOTOSENSITIVE COMPOSITION, AND OPTICAL WAVEGUIDE ELEMENT AND PROCESS FOR PRODUCING THE SAME

Pub. No.:    WO/2001/037049    International Application No.:    PCT/JP2000/007949
Publication Date: Sat May 26 01:59:59 CEST 2001 International Filing Date: Sat Nov 11 00:59:59 CET 2000
IPC: C07F 7/12
C07F 7/18
C08G 77/20
C08G 77/24
G02B 1/04
G02B 6/122
G03F 7/00
G03F 7/004
G03F 7/075
Applicants: NIPPON SHEET GLASS CO., LTD.

NAKAMURA, Koichiro

Inventors: NAKAMURA, Koichiro

Title: PHOTOSENSITIVE COMPOSITION, AND OPTICAL WAVEGUIDE ELEMENT AND PROCESS FOR PRODUCING THE SAME
Abstract:
A light-transmitting material which has high transparency in a wavelength region for use in communication, is excellent in properties such as heat resistance, water resistance, and chemical resistance, can be easily made to have a grating, and can be easily incorporated into a module in practical use. The photosensitive composition, which gives the light-transmitting material, comprises a silane compound or a product of the hydrolysis/dehydrating condensation thereof, a photoinitiator, and water, the silane compound being represented by the following formula (1): R1SiX13 wherein R1 is an organic group having a polymerizable carbon-carbon double bond and X1 is a hydrolyzable group or atom, provided that at least 40 % by number of the hydrogen atoms which were contained in the organic group R1 have been replaced with at least one kind of substituent atoms selected from the group consisting of heavy hydrogen, fluorine, chlorine, and bromine.