| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical burst transmission reception circuit, where the need for the selection of a light-emitting element (LD) that takes characteristic fluctuations in the forward output light and backward output light of the LD affected by a coupling state between the LD and a monitor PD into account for optical transmission output constant control is eliminated and the circuit configuration of using a function block in common can be simplified. SOLUTION: A light-receiving element (PD) 22 and a preamplifier circuit 23 having already been prepared for an optical reception section 11 are used in common to detect a light emission output from the light-emitting element (LD) 18 of an optical transmission section 5 and to control the output to be a constant value. |
