Patent ID: 8542434
Filing Date: 2013-09-24
Classification: G02F

Abstract:
1. An optical waveguide device comprising: a ferroelectric layer comprising a ferroelectric material and having a thickness of 4 μm or more and 7 μm or less; a supporting body; and an adhesive layer adhering a bottom face of said ferroelectric layer and said supporting body, wherein said ferroelectric layer comprises a ridge portion comprising a channel type optical waveguide formed therein, a first protuberance provided on a first side of said ridge portion, and a second protuberance provided on a second side of said ridge portion, wherein inner grooves are formed between said ridge portion and said protuberances, respectively; wherein outer grooves are formed outside of said protuberances, respectively; wherein said outer grooves are deeper than said inner grooves; wherein said ridge portion has a width W wherein said inner grooves have a depth D