title: Preparation of a new electro-optic polymer cross-linkable via copper-free thermal Huisgen cyclo-addition and fabrication of optical waveguides by Reactive Ion Etching.
abstract: High-quality trails of ridge waveguides were successfully fabricated using a new cross-linkable polymer (PCC01) by UV photolithography followed by Reactive-Ion Etching (RIE) process. The cross-linking reaction of PCC01 is based on the copper-free Huisgen cyclo-addition between an azide and an acetylene group. The new cross-linkable polymer (PCC01) consists of a structural modification of the previously described materials (Scarpaci et al. Polym. Chem.2011, 2, 157), because the ethynyl group is functionalized by a methyl group instead of the TMS protecting group. This feature prevents the formation of silica (SiO(2)) generated by trimethylsilyl groups and which was stopping the engraving process before completion. Herein, we describe the synthesis, the NLO characterizations, and the fabrication of a high-quality ridge waveguide with PCC01. The new cross-linkable polymer PCC01 not only solves the problems encountered with our previously described polymers, but also presents an enhancement of the electro-optic stability, because d(33) coefficients up to 30 pm/V stable at 150 °C were recorded.
authors.affiliation: Université de Nantes , CNRS, Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), UMR CNRS n° 6230, 2, rue de la Houssinière - BP 92208 - 44322 Nantes Cedex 3, France.
authors.forename: Clément
authors.initials: C
authors.lastname: Cabanetos
authors.forename: Hind
authors.initials: H
authors.lastname: Mahé
authors.forename: Errol
authors.initials: E
authors.lastname: Blart
authors.forename: Yann
authors.initials: Y
authors.lastname: Pellegrin
authors.forename: Véronique
authors.initials: V
authors.lastname: Montembault
authors.forename: Laurent
authors.initials: L
authors.lastname: Fontaine
authors.forename: Frédéric
authors.initials: F
authors.lastname: Adamietz
authors.forename: Vincent
authors.initials: V
authors.lastname: Rodriguez
authors.forename: Dominique
authors.initials: D
authors.lastname: Bosc
authors.forename: Fabrice
authors.initials: F
authors.lastname: Odobel