Abstract: In an information presentation apparatus, a documents parser reads out and analyzes desired document data from a documents storage unit to obtain attributes data of the document data, which is stored in a document attributes storage uni. A displaying attributes setting unit uses the document attribute information, or attributes data, stored in the document attributes storage unit to retrieve data from tables of document attributes and displaying attributes, and, based on the retrieval result, sets a displaying attribute for the relevant document data. A displaying data generator determines a displaying manner of the document data according to the displaying attribute thus set, and the document data is displayed on a displaying unit in the determined manner. Accordingly, a user can quickly estimate a document attribute suggested by the content of the document data, not by reading the document data, but only at a glance of the manner in which the document data is being displayed.

Abstract: An integrated device includes a waveguide, which may be connected to a photonic circuit and an external fiber, and an on-chip device formed on an optical chip by forming a region in which the waveguide terminates. The region is bounded by reflective surfaces. Light coming from the waveguide is essentially trapped inside the region and directed to an on-chip device disposed in the region. An integrated device consists of a low index difference waveguide, an on-chip mode converter, a high index difference waveguide, and an on-chip function formed on a single optical chip so that the high index difference waveguide is close to the substrate surface upon which the mode converter is formed. Substrate surface height differences are provided to define different substrate surface mounting heights for a low index difference waveguide, high index difference waveguide, a mode converter, and an on-chip device.

Abstract: An optical phase shifter including a constant phase shift element or a variable phase shift element, each introducing a desired and predetermined phase shift into an optical signal passing through the phase shifter. The phase shifter has coaxial first and second waveguides each with a core defining an optical path, through the first waveguide and having an output facet, and which waveguides are separated from each other by a predetermined distance. The phase shift element is disposed between the waveguides and an actuator is coupled to the phase shift element for causing selective movement of the phase shift element.