| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain an optical functional device using a small-sized array waveguide having substantially flat transmission characteristics in a specific wavelength band and small loss. <P>SOLUTION: The optical functional device includes a first slab waveguide 4 provided with an input waveguide 3 as an input end, a second slab waveguide 6 having an output end, and a channel waveguide array 5 connecting one end to the first slab waveguide 4, connecting the other end to the second slab waveguide 6 and comprising a plurality of channel waveguides different in length. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
