Patent ID: 7267492

Claim:
An optical integrated device in which optical parts are contained in a same package, the device comprising: an optical waveguide chip for modulating optical signals; an optical fiber; a first ferrule which is fixed to the optical waveguide chip and into which the optical fiber is inserted for fixing the optical fiber; the package which contains the optical waveguide chip and the first ferrule and in a sidewall of which an opening is made for pulling out the optical fiber to the outside; a pipe airtightly fixed around the opening; and a second ferrule which is inserted into the pipe for airtightly fixing the second ferrule to an end of the pipe and into which the optical fiber pulled out to the outside of the package through the opening is inserted for fixing the optical fiber, wherein the optical fiber without deflection is contained in the package by making a first expansion/contraction amount created due to the thermal expansion of the package and the thermal expansion of the pipe match a second expansion/contraction amount created due to the thermal expansion of the optical fiber and the thermal expansion of the second ferrule and wherein a state of the optical fiber without deflection is always maintained in the package at an environmental temperature where the optical integrated device is used.