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Title
Elektrooptische und photonische Bauelemente
Date Issued
1998
Author(s)
Nordmann, J.
Beckmann, S.
Etzbach, K.H.
Sens, R.
Bauer, M.
Krueger, H.
Patent No
1996-19639381
Abstract
In electrooptical and photonic devices with a functional layer of oriented, crosslinked nonlinear optical (NLO) polymer between 2 buffer layers, the polymer is a polyadduct (I) containing a NLO grouping, derived from (a) an NLO active copolymer (II) containing glycidyl groups reacting with cyanate groups and (b) organic di- or polycyanate(s) (III). Also claimed is a method of making the devices. USE - The devices are planar waveguides, the function of which can be changed by electric potential, used in nonlinear optics and optical information technology, e.g. modulators, Mach-Zehnder modulators, tuneable and switchable couplers, (tuneable) wavelength filters and polarisation modifiers. ADVANTAGE - Relaxation after orientation is avoided or inhibited in (I) and optical losses are small. Usually, relaxation is avoided up to temperatures above 100 deg. C and (I) are stable at temperatures above 200 deg. C. Very wide variation of the optical properties is possible.
Language
de
Patenprio
DE 1996-19639381 A: 19960925