Patent ID: 7062170

Claim:
A full duplex optical communication system, comprising a first and a second optical transceiver units connected with each other by means of a single-core optical fiber, said first optical transceiver unit including: a first light emitting element for emitting transmission light; a first light receiving element for receiving signal light; and first guiding means for guiding said transmission light from said first light emitting element to said single-core optical fiber and for guiding received signal light from said single-core optical fiber to said first light receiving element, and said second optical transceiver unit including: a second light emitting element for emitting transmission light; a second light receiving element for receiving signal light; and second guiding means for guiding said transmission light from said second light emitting element to said single-core optical fiber and for guiding received signal light from said single-core optical fiber to said second light receiving element, said optical communication system further comprising: means for reducing optical crosstalk component relatively, wherein said optical crosstalk component being at least one of the optical crosstalk component originating from said first light emitting element and contained in said signal light received by said first light receiving element and the optical crosstalk component originating from said second light emitting element and contained in said signal light received by said second light receiving element, by adjusting at least one of the amounts of transmission light emitted from said first and second light emitting elements to said single-core optical fiber, and wherein said first and second light emitting elements emit the transmission light having different spectral width in wavelength.