OPTICAL RECEPTION CIRCUIT

摘要

PURPOSE:To provide an output of a signal without pulse width distortion and missing of a reception signal even when a level of an input signal is fluctuated. CONSTITUTION:An optical input 1 is a burst signal whose level is fluctuated and converted into an electric signal by a light receiving element 2. This signal is amplified by an amplifier 3 and given to a comparator 4 and a reference signal generating circuit 6. The reference signal generating circuit 6 generates a reference signal fluctuated in interlocking with the amplitude of a received pulse signal based on the pulse signal with a different amplitude level and gives the voltage to the comparator 4. As a result, an output of the comparator 4 is a signal reproduced from a burst signal of the optical input 1 with fidelity.