| 摘要 |
<p>The invention provides a method that is an improvement on conventional optical transmitter architecture to allow the production of bursts of data signals with accurate selectable optical frequency within the target optical spectrum. The invention overcomes the limitation caused when the monitor and feedback circuits do not provide sufficient control of wavelength stability within the required time. A key aspect of this invention is the ability to ensure the output frequency is well controlled, even for rapid changes in output frequency, as in optically bursted asynchronous or synchronous wavelength systems. Two approaches are disclosed, one for cases when the laser cannot be tuned within an allowed switching time, and one which applies when the laser can be tuned sufficiently quickly but requires on-going stabilization. The second approach may be used to improve the performance of the first approach.</p> |
