| 摘要 |
PURPOSE:To make branched sections to have prescribed incident and reflection angles to grooves of a filter so that an optical circuit for demultiplexing/ multiplexing can be, easily produced, by making the grooves crossing waveguides formed at the branched sections and at midways of single paths as occasion demands to intersect both sides of a base plate parallel to and facing each other at right angles. CONSTITUTION:An optical waveguide section 20 containing branched sections 23A and 23B, at which transmitted light emitting paths 24A and 24B and reflected light emitting paths 25A and 25B are respectively branched from each other, are provided on a base plate 10. Grooves 30A and 30B crossing waveguides 22 are formed at the branched sections 23A and 23B and midways of single paths. Moreover, filters 40A, 40B, and 40C are put in the grooves 30A and 30B. The grooves 30A and 30B are provided in such a way that they can intersect both sides of the base plate 10 parallel to and facing each other at right angles. Then one branched section 23A or 23B of the filters 40A, 40B, and 40C of the optical waveguide and one single path section are made to commonly use one groove 30A, 30B, or 30C provided with the filters, so that numerous circuits can easily be manufactured simultaneously. |
