DR1 doped sol-gel planar waveguides for nonlinear devices operating at telecommunications wavelengths

International audienceWe report on linear and nonlinear optical properties of Disperse Red 1-doped solgel waveguides. The refractive-index and optical-propagation losses of the guiding layer were measured between 0.756 mm and 1.64 mm. The spectral broadening of the chromophore charge-transfer transition in the visible is modeled with a Voigt-profile function. In the telecommunications window the attenuation is dominated by the overtones of the O--H bonds vibration bands. The nonlinear optical coefficients were measured at different poling strengths with the Maker-fringe method. The nonlinear coefficient d33 was found to be 4.5 pm V21 at 1.58 mm for a poling field of 60 Vmm21

PC software for analysis of versatile integrated optical waveguides by finite difference method

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Crosslinkable colored oligoimides for electrooptical materials

The invention concerns a method for obtaining an electrooptic material characterized in that it consists in depositing on a substrate a soln. of oligoimides whereon are grafted coloring agents capable of being oriented and in performing a treatment designed to crosslink the oligoimides and to orient the coloring agents. A typical crosslinkable, colored oligoimide was manufd. by agitating a NMP soln. contg. 3.62 g 4,4'-hexafluoroisopropylidenebiphthalic anhydride and 2 g 4-(4-amino-2-hydroxyphenoxy)aniline 18 h under N, heating 3 h at 160, adding 0.35 g nadic anhydride termination agent, stirring 18 h under N, heating 3 h at 160, heating 1 equiv each resulting terminated oligoimide and C.I. Disperse Red 1 in NMP and 2.5 equiv di-Et azodicarboxylate 24 h at 80, and heating 1 equiv resulting colored, terminated oligoimide with 2 equiv plus 10% excess 3-mercaptopropyltrimethoxysilane crosslinkable compd. 12 h at 70 in THF under N in the presence of AIB

Crosslinkable colored oligoimides for electrooptical materials

The invention concerns a method for obtaining an electrooptic material characterized in that it consists in depositing on a substrate a soln. of oligoimides whereon are grafted coloring agents capable of being oriented and in performing a treatment designed to crosslink the oligoimides and to orient the coloring agents. A typical crosslinkable, colored oligoimide was manufd. by agitating a NMP soln. contg. 3.62 g 4,4'-hexafluoroisopropylidenebiphthalic anhydride and 2 g 4-(4-amino-2-hydroxyphenoxy)aniline 18 h under N, heating 3 h at 160, adding 0.35 g nadic anhydride termination agent, stirring 18 h under N, heating 3 h at 160, heating 1 equiv each resulting terminated oligoimide and C.I. Disperse Red 1 in NMP and 2.5 equiv di-Et azodicarboxylate 24 h at 80, and heating 1 equiv resulting colored, terminated oligoimide with 2 equiv plus 10% excess 3-mercaptopropyltrimethoxysilane crosslinkable compd. 12 h at 70 in THF under N in the presence of AIB

PC software for analysis of versatile integrated optical waveguides by polarized Semi-Vectorial Finite Difference Method

International audienceIn this paper, a generic software package that provides an interactive and graphical environment for analysis by polarised semi-vectorial finite difference (SVFD) method of all kinds of integrated optical waveguides, such as buried channel, raised strip, rib, embedded, or ridge waveguides, is described. A coherent design rationale is formulated that takes into account the terms due to the interface between each layer as the basis of modal birefringence in integrated optics. Then, according to the opto-geometric parameters of a given waveguide, the modal propagation constants and the spatial fields patterns are calculated. Three examples regarding typical rib waveguides are dealt with, allowing to discuss the results (effective index values) compared with that of the Galerkin method. As fitted for personal computers, this software should be most useful for designing integrated optics components