| 摘要 |
<p>A method and apparatus (100) are provided for real-time correction of a voltage drift of an optical switch (130). The correction may be made without interrupting an optical data stream of the optical switch. Output power levels of the optical switch are monitored continuously by means of a detector (150) and are converted to voltages by means of a transimpedance amplifier (100), in order to determine whether a voltage drift has occurred. Upon determining that the voltage drift has occurred, a signal processing unit (170) with voltage correction circuitry applies a voltage to a single port of the optical switch to adjust the bias point of the optical switch. The technique may be extended to adjust a voltage drift of multiple optical switches connected in series.</p> |
