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AssigneesNTT Electronics Corporation, Nippon Telegraph and Telephone Corporation
InventorsShigeo Nagashima, Yoshiteru Jinnouchi, Takashi Nakayama, Hiroki Kawashiri, Ikuo Ogawa, Yusuke Nasu, Shunichi Soma
Estimating the term…
In the case of implementing a polarization separation circuit, a polarization rotator, and the like by inserting a thin-film element into a substrate in one optical interference circuit, one common large-sized groove shared among a plurality of thin-film elements for their insertion has been formed. The optical waveguide type device of the present invention is configured such that at least one groove intersects only one corresponding optical waveguide for inserting the thin-film element and does not intersect other optical waveguides adjacent to the one corresponding optical waveguide. This groove substantially has a rectangular shape, and has a minimum size adapted to the thin-film element to be inserted so as to stably hold and fix the thin-film element in the groove. Adjacent grooves are formed so as to be arranged such that their portions in a direction substantially vertical to the optical waveguide are facing each other.
An optical waveguide device which has a plurality of optical waveguides configured on a single substrate and into which one or more thin-film elements are inserted substantially perpendicularly to a substrate face by intersecting the optical waveguides, the optical waveguide device comprising:
Dependencies are inferred from the claim text.