摘要:
A gasket made of a rubber-like elastic body attached to an attaching groove provided in at least one out of two members to seal a gap between the two members includes a first sealing surface coming into surface contact with a surface of a first member. A second sealing surface comes into surface contact with a surface of a second member. A third sealing surface comes into surface contact with a side surface of the attaching groove, and a pressure receiving groove opened to a side receiving sealing fluid pressure which is on an opposite side of the third sealing surface and provided so as to be parallel to the first sealing surface and the second sealing surface.
摘要:
An optical branched waveguide and an optical waveguide circuit which are easily fabricated, have a small size, and are low in cost. A linear first optical waveguide and second optical waveguide are crossed at a predetermined angle with respect to the substrate, a groove forming a predetermined angle relative to the optical waveguides and having a depth set to not less than the depth of the first and second optical waveguides is formed so as to include the intersecting region of the first optical waveguide and the second optical waveguide, and an optical element having a partial reflection and partial transmission function passing part of an incident light guided through the first optical waveguide therethrough and guiding this to the first optical waveguide and, at the same time, reflecting part of the incident light and guiding the same to the second optical waveguide is inserted into the groove so as to include the intersecting region of the first optical waveguide and the second optical waveguide.