| 摘要 |
The invention relates to an optical receiver comprising a transimpedance amplifier (21) and a photo detector (PD) for converting the optical power arriving at the receiver into electric current. To enable a good dynamic range to he achieved for the receiver in a simple way, the transimpedance amplifier is a differential amplifier provided with two inputs. Futhermore, the receiver comprises separating means (LPU) for separating a direct voltage component from the output voltage of the transimpedance amplifier and means (VCU) for supplying a direct voltage dependent on the direct current component to that input of the transimpedance amplifier which is different from the input used by the photo detector.
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