Abstract: The invention provides a method of manufacturing an optical printed circuit board and an optical printed circuit board. The method comprises providing a support layer; on the support layer, providing an optical core layer; forming optical channels from the optical core layer and surrounding the optical channels with cladding thereby forming optical waveguides; and during said step of forming the optical channels, forming one or more alignment features, e.g. projections, on the optical printed circuit board.

Abstract: The invention provides an optical mux/demux for an optical printed circuit board. The mux/demux comprises: a first waveguide formed on a support layer for carrying a wavelength division multiplexed optical signal; a separator/combiner for separating the wavelength division multiplexed signal into component signals of corresponding wavelengths or for combining component signals into the said wavelength division multiplexed signal; and plural second waveguides, each for receiving or providing one or more of the said component signals, wherein the separator/combiner is at a predetermined location relative to the waveguides.

Abstract: A reconfigurable web-browser compatible data query system. The invention provides an XML platform enabling web-based forms that query data modeled by data schemas. This platform comprises a collection of query form controls, an annotation scheme for attaching these controls to the data schema, a compiler for creating a web-browser-compatible representation of the query form, and a run-time engine for constructing queries against the data and rendering query results.

Abstract: A reconfigurable web-browser compatible data query system. The invention provides an XML platform enabling web-based forms that query data modeled by data schemas. This platform comprises a collection of query form controls, an annotation scheme for attaching these controls to the data schema, a compiler for creating a web-browser-compatible representation of the query form, and a run-time engine for constructing queries against the data and rendering query results.

Abstract: A data processing system receives data in a first format utilizing a markup language such as extensible Markup Language (XML), and stores the data in a different, relational database format involving multiple tables and columns, etc. The system translates subsequent query input expressed in the first format to prepare representative query instructions in SQL or another query language compatible with relational data, and thereafter executes the prepared instructions upon data in the relational database. The system outputs results of the query in format dictated by the query input.

Abstract: A data processing system receives data in a first format utilizing a markup language such as eXtensible Markup Language (XML), and stores the data in a different, relational database format involving multiple tables and columns, etc. The system translates subsequent query input expressed in the first format to prepare representative query instructions in SQL or another query language compatible with relational data, and thereafter executes the prepared instructions upon data in the relational database. The system outputs results of the query in format dictated by the query input.