Processing head for formation of mirror plane of optical waveguide sheet, processing apparatus, and method of forming mirror plane of optical waveguide

A processing apparatus for forming a mirror plane of an optical waveguide sheet having a processing head provided at a top of a capillary unit:

• wherein a tip portion of the processing head has a first plane and a second plane crossing a symmetry axis of the processing head and crossing perpendicularly each other at an angle of 45°, and
• the processing head is driven into an optical waveguide sheet in which an optical waveguide having a cladding and a core buried into the cladding is formed in a sheet shape, at a position to be an end portion of the optical waveguide, so a shape of the first plane and the second plane is transferred at the end portion of the optical waveguide to form a mirror plane.

A method of forming a mirror plane of an optical waveguide sheet comprising the steps of:

• driving a processing head provided at a top of a capillary unit and having a first plane and a second plane crossing a symmetry axis of the processing head at an angle of 45° and crossing perpendicularly each other at a tip portion of the processing head, into an optical waveguide sheet in which an optical waveguide having a cladding and a core buried into the cladding is formed in a sheet shape, at a position to be an end portion of the optical waveguide, and
• releasing the processing head from the optical waveguide sheet, and transferring a shape of the first plane and the second plane at the end portion of the optical waveguide to form a mirror plane.