An optical waveguide device includes, a substrate, an optical waveguide arranged on the substrate, an optical element arranged on the substrate and optically coupled to one end part of the optical waveguide, a flame retardant adhesive layer covering the optical waveguide, and a connector portion adhered to other end part of the optical waveguide by the flame retardant adhesive layer. The housing has a plurality of housing holes defined at its bottom. The data is saved into a database. Uncached data is read into a cache buffer for global access. The first control switch isolates the circuit to be isolated while said isolation gate is subject to either the first voltage or the second voltage.