Patent ID: 7907847
Filing Date: 2011-03-15
Classification: H04B

Abstract:
1. An optical integrated circuit device comprising: a light transmission member transmitting light, the light transmission member being in the form of a flat plate; a plurality of light transmission/reception units being disposed on a semiconductor substrate, and transmitting/receiving a signal to/from each other by sharing the light transmission member for use as a light transmission path; and an optical waveguide propagating light emitted from a light source; wherein each of the plurality of light transmission/reception units includes: an optical detection unit detecting light in the light transmission member; and an optical switch member guiding light in the optical waveguide to the light transmission member, and guiding light in the light transmission member to the optical detection unit; wherein the optical switch member includes: a first optical resonance member formed into the shape of a ring and disposed, in the proximity of the light transmission member and substantially parallel thereto, between the light transmission member and the optical waveguide, the first optical resonance member resonating with light propagating through the optical waveguide when a voltage is applied; an optical emission member formed into the same shape as that of the first optical resonance member and disposed between the light transmission member and the first optical resonance member in a manner where contact is made with the first optical resonance member, the optical emission member guiding, to the light transmission member, resonant light propagating trough the first optical resonance member; a second optical resonance member formed into the shape of a ring and disposed in the proximity of the light transmission member and substantially parallel thereto in a position apart from the first optical resonance member, the second optical resonance member resonating with light propagating through the light transmission member when the voltage is applied, and guiding the resonant light to the optical detection unit; and an optical reception member disposed between the light transmission member and the second optical resonance member in a manner where contact is made with the second optical resonance member, the optical reception member guiding, to the second optical resonance member, light propagating through the light transmission member; wherein each of the first and second optical resonance members includes: a silicon layer; a first stress applying layer being formed so as to contact the silicon layer on one side of the silicon layer, and applying a stress to the silicon layer from a first direction in a planar direction of the semiconductor substrate; and a second stress applying layer being formed so as to contact the silicon layer on the other side of the silicon layer, and applying a stress to the silicon layer from a second direction opposite to the first direction in a planar direction of the semiconductor substrate.