| 摘要 |
PROBLEM TO BE SOLVED: To enable a full-duplex bidirectional communication which is stable even when there is a difference in light amount loss between different types of light emitting elements used for a first and second optical communication sections, by relatively reducing optical crosstalk components without causing increases in size or in cost and the optical communication section. SOLUTION: The light amount of a transmission light fitted with a one-core fiber 110 from an optical communication section 120 has a width of TAmin-max. While the light amount of a transmission light fitted with the fiber 110 from an optical communication section 130 has a width of TBmin-max in a state where the light emission amount of a light emitting element 131 is not adjusted, only the maximum value of the transmission light amount is reduced from TBmax to TBmax' by providing a light emission amount adjusting section 140 on the section 130 side. By doing this, even when light amount loss La of the transmission light from the section 120 in the fiber 110 is larger than light amount loss Lb of the transmission light from the section 130 in the fiber 110, optical crosstalk components X can be relatively reduced in a light receiving element 133. |
