To reduce possibility of occurrence of erroneous pulse by compensating sagging generated by a low-frequency amplification characteristics without increasing capacity of a coupling capacitor.
An optical amplifier circuit comprises a photodiode which converts an optical signal into an optical current, an I/V conversion circuit which converts the optical current flowing the photodiode into a voltage, a differential amplifier which is AC-connected with a first coupling capacitor, and a waveform shaping circuit AC-connected with a second coupling capacitor. The differential amplifier is added with a limiter circuit to limit an output amplitude. An anode side of a limiter diode D
COPYRIGHT: (C)2003,JPO
Masaru Osawa
| JP2215251A | ||||
| JP2000252764A | ||||
| JP60077118U | ||||
| JP9130168A |
Hiroki Naito
Daisuke Nagano