We　report　the　synthesis　and　characterization　of　multiwalled　carbon　nanotube　(MWCNT)organically　modified　silicate　(ORMOSIL)　nanohybrid　gel　glass,　in　which　the　incorporated　MWCNTs　are　covalently　bonded　to　the　silica　network.　The　structural　properties　of　the　3-aminopropyltriethoxysilane　functionalized　MWCNTs　and　MWCNT-ORMOSIL　nanohybrid　gel　glass　are　comprehensively　characterized　using　spectroscopic　and　electron　microscopy　techniques.　We　find　that　the　agglomeration　of　incorporated　MWCNTs　is　effectively　restrained　and　that　the　MWCNTs　are　dispersed　homogeneously　and　individually　in　the　gel　glass　matrix.　Compared　with　the　mother　MWCNT　suspension,　the　resultant　nanohybrid　gel　glasses　demonstrate　sustained　nonlinear　optical　properties　at　both　532　and　1064　nm　laser　wavelengths.　(C)　2009　Elsevier　Ltd.　All　rights　reserved.