| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an array waveguide diffraction grating type optical multiplexer/demultiplexer whose package size can be reduced even if multiple array waveguide diffraction gratings are included. <P>SOLUTION: An array waveguide diffraction grating type optical multiplexer/demultiplexer includes a waveguide chip 16 which has multiple array waveguide diffraction gratings 14, each of which has a first waveguide 20, a first slab waveguide 22, an array waveguide 28, a second slab waveguide 26, and a second waveguide 24, on a substrate and is divided into a first divided waveguide chip 16A and a second divided waveguide chip 16B in the first slab waveguide 22 and the second slab waveguide 26, and a compensation member 18 which compensates a temperature dependence shift of a light transmission center wavelength of the array waveguide diffraction grating 14 by relatively moving the first waveguide chip and the second waveguide chip due to expansion/contraction in accordance with the temperature change. The waveguide chip has a curved shape along the curved direction of the array waveguide 28. <P>COPYRIGHT: (C)2012,JPO&INPIT |
