| 摘要 |
2. It has been necessary to date to use gratings with chirp in arrangements for an integrated optical spectrometer with an optical film waveguide and a focusing optical grating. The aim is to specify a new arrangement in which the grating is used with a fixed groove separation and problems in adjustment and contrast can therefore be avoided. …<??>2.2. In the new arrangement, the focusing optical grating (110, 120) is constructed on a boundary surface (11, 12), which is on the longitudinal side and defines a stage, of a ribbed waveguide (10) which is abutted by the film waveguide (20) at least on a longitudinal side of the ribbed waveguide (10). When using a grating (110, 120) with fixed groove separation (a), the ribbed waveguide is curved in accordance with a logarithmic spiral. Otherwise, it is necessary to tune a chirp of a grating and the form of the curve of the ribbed waveguide to one another. A method is specified for making the new arrangement. …<??>2.3. Integrated optical demultiplexer …<IMAGE>… |
