| 摘要 |
Proposed is an optical data transmission device for an optical access network that comprises a laser transmission unit, which generates an optical transmission signal, and a driving unit, which controls the laser transmission unit for modulating the transmission signal. The device comprises an optical reception unit that converts the received optical signal into an electrical measurement signal. For this, the reception unit contains a photo-diode and an electrical amplifier. The optical reception unit is separate from the laser transmission unit. A control unit controls the laser transmission unit, such that the optical transmission signal is modulated in dependence on a measurement signal. The control unit measures multiple electrical measurement signals during a measurement interval and determines an averaged received electrical measurement signal. Even furthermore, the control unit controls the electrical amplifier, such that the electrical amplifier is turned off during a time interval prior to the measurement interval. |
| 主权项 |
1. Optical data transmission device for an optical access network, comprising
a laser transmission unit, operable to generate an optical transmission signal, at least one driving unit, which is operable to control said laser transmission unit, such that said optical transmission signal is modulated in dependence on a data signal, an optical reception unit, adapted to convert at least a fraction of a received optical signal into an electrical measurement signal, using a photo diode and an electrical amplifier, wherein said optical reception unit is separate from said laser transmission unit, at least one control unit, operable to control said laser transmission unit, such that said optical transmission signal is modulated in dependence on a measurement signal,wherein said control unit is furthermore operable
to measure multiple electrical measurement signals during a measurement interval and to determine an averaged received electrical measurement signal based on the measured signals, and to control said electrical amplifier, such that said electrical amplifier is turned off during at least a fraction of a time interval prior to said measurement interval. |
