| 摘要 |
<p>An optical multiplexer/demultiplexer having small number of components and a small number of assembly steps, and not requiring for complicated adjustment. The optical multiplexer/ demultiplexer comprises a refractive index distribution type optical transmission unit in which the refractive index is continuously reduced from the center toward an outer circumference, a wavelength multiplexing light connection part disposed at one end of the optical transmission part in the axial direction, and at least one monochromatic light connection part disposed at the other end of the optical transmission part in the axial direction. The wavelength multiplexing light connection part and the monochromatic light connection part are disposed on the optical transmission part in a positional relationship that the monochromatic light included in the wavelength multiplexing light incident on one end of the optical transmission part from the wavelength multiplexing light connection part is emitted from the optical transmission part at the position where the monochromatic light connection part of the other end of the optical transmission part is disposed.</p> |
