摘要:
A photosensitive composition for optical waveguides comprising of an organic oligomer, a polymerization initiator and a crosslinking agent, the organic oligomer being a silicone oligomer represented by the following formula (1), wherein X denotes hydrogen, deuterium, halogen, an alkyl group or an alkoxy group; m is an integer from 1 to 5; x and y represent the proportion of respective units, and neither x nor y is 0; and R1 denotes a methyl, ethyl, or isopropyl group; a production method thereof, and a polymer optical waveguide pattern formation method using the same.
摘要:
A photosensitive composition for optical waveguides comprising of an organic oligomer, a polymerization initiator and a crosslinking agent, the organic oligomer being a silicone oligomer represented by the following formula (1), wherein X denotes hydrogen, deuterium, halogen, an alkyl group or an alkoxy group; m is an integer from 1 to 5; x and y represent the proportion of respective units, and neither x nor y is 0; and R1 denotes a methyl, ethyl, or isopropyl group; a production method thereof, and a polymer optical waveguide pattern formation method using the same.
摘要:
In a digital thermo-optic switch and an optical ADM filter of the present invention, functional components such as a splitter and a grating structure part formed in the course of an optical circuit as a component are composed of silicone materials which are superior in heat resistance, reduced loss, and low birefringence, thereby achieving sufficiently practical thermal stability, low loss at 1.55 to 1.58 .mu.m band, wavelength selectivity, and cost reduction.
摘要:
A polymeric optical material which is a mixture of a polysiloxane and at least one compound selected from the group consisting of polyisocyanate, silane, alkoxide and chelate, and an optical waveguide fabricated from the polymeric optical material having high thermal stability and low propagation loss over wide range. The polysiloxane may have, for example, a repeating unit of following formula (I): ##STR1## wherein each of R.sub.1 and R.sub.2 is independently an alkyl, deuterated alkyl or halogenated alkyl group, or a phenyl, deuterated phenyl or halogenated phenyl group. The optical waveguide includes a substrate, a clad layer provided on the substrate and a core layer surrounded by the clad layer. The clad layer is composed of a lower clad layer which is overlaid onto the substrate and an upper clad layer which surrounds the core layer.