Patent ID: 7036997

Claim:
An optical module comprising: a filter configured to transmit only a light-wave having a particular wavelength and reflect a light wave having other wavelengths; a first optical fiber configured to guide a first light wave to a first end face of said filter; a second optical fiber configured to guide the first light wave transmitted through said filter from a second end face of said filter opposite said first end face, if the first light wave has the particular wavelength; a third optical fiber configured to guide a second light wave having the particular wavelength to said second end face; a fourth optical fiber configured to guide, from said first end face, the first light wave not having the particular wavelength that is reflected by said filter and the second light wave transmitted through said filter; a first base configured to position said first and fourth optical fibers; and a second base configured to position said second and third optical fibers, wherein said filter can be supported between the end faces of said first and the second bases in order that the end faces of said first and fourth optical fibers come in contact with said first end face and that the end faces of said second and third optical fibers come in contact with said second end face.