| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical component stable against temperature changes of a use environment, where a first planar light wave circuit and a second planar light wave circuit different by refractive index are joined together with end surfaces butted to each other so as to optically couple a plurality of optical waveguides formed in respective planar light wave circuits. <P>SOLUTION: In an optical component 500, a first planar light wave circuit 501 having a first refractive index n<SB POS="POST">1</SB>and a second planar light wave circuit 502 having a refractive index n<SB POS="POST">2</SB>different from the first refractive index n<SB POS="POST">1</SB>are joined together with end surfaces rectangular to an optical axis butted to each other. First to n-th (n is an integer equal to or larger than 2) optical waveguides are formed in each of the first and second planar light wave circuits 501 and 502. The first and second planar light wave circuits 501 and 502 are aligned and joined together so that a position of i-th (i is an integer equal to or larger than 1 and equal to or smaller than n) optical waveguide of the first planar light wave circuit 501 and a position of i-th optical waveguide of the second planar light wave circuit 502 are aligned with each other respectively at a junction interface. In this case, angles ϕ<SB POS="POST">i</SB>formed between the i-th optical waveguide of the first planar light wave circuit 501 and the normal of the interface are made different by i within a range satisfying the Snell's law. <P>COPYRIGHT: (C)2013,JPO&INPIT |
