Patent ID: 8712204

Claim:
An optical modulation device comprising: a supporting body comprising a first groove, a second groove, and a protrusion between said grooves; a ridge part comprising an electro-optic crystal and a channel type optical waveguide propagating light in multi mode formed therein; a first side plate part comprising an electro-optic crystal and formed in a first side of said ridge part; a second side plate part comprising an electro-optic crystal and formed in a second side of said ridge part; a first adhesive layer adhering said first side plate part and said supporting body; a second adhesive layer adhering said second side plate part and said supporting body; a third adhesive layer adhering said ridge part and said protrusion; a first electrode provided on a side face of said ridge part in a side of said first groove, said first groove, a side face of said first side plate part and an upper face of said first side plate part; and a second electrode provided on a side face of said ridge part in a side of said second groove, said second groove, a side face of said second side plate part and an upper face of said second side plate part; wherein said first electrode and said second electrode apply a modulation voltage modulating said light propagating in said channel type optical waveguide.