Patent ID: 7043113
Filing Date: 2006-05-09
Classification: G02B,G02F

Abstract:
1. An optical multiplexer comprising: a graded index type light transmission section whose refractive index is continuously reduced in the direction from the center to the periphery thereof; a wavelength-multiplexed-light connecting section disposed at one of the axial ends of said light transmission section; and at least one monochromatic light connecting section disposed at the other axial end of said light transmission section, wherein said wavelength-multiplexed-light connecting section and said monochromatic light connecting section are disposed relative to said light transmission section in such a positional relationship that a monochromatic light included in a wavelength multiplexed light entered from said wavelength-multiplexed-light connecting section into said one end of said light transmission section is emitted from the other end of the light transmission section at a position where said monochromatic light connecting section is disposed, and wherein said light transmission section has an substantially cylindrical body, wherein said wavelength-multiplexed-light connecting section is disposed to the radially central region of said light transmission section while being inclined at an angle close to the aperture angle of said light transmission section.