| 摘要 |
<p>Formed on a low refractive index layer (2) (refractive index nb) is a core waveguide (3) (refractive index nc, nc > nb) and formed on the core waveguide is a cladding (4) whose refractive index nc l (nc l < nc, nc l NOTEQUAL nb) is varied in the propagation direction of optical signals. Formed on a low refractive index layer (2) (refractive index nb) is a core waveguide (3) whose refractive index nc (nc > nb) is continuously varied in the propagation direction of optical signals and formed on the entire core waveguide is a cladding (4) (refractive index nc l , nc l < nc).</p> |
