| 摘要 |
<p>The present invention provides an apparatus and calibration methods for controlling an Electro-Optical System. The apparatus consists of a controller that includes all of the necessary electronics needed to drive the laser, monitor its operation with the use of measurement circuits, maintain the laser parameters operating within acceptable limits over temperature and device variations and also control operation or related circuits such as signal amplifiers and Host Computer Interface. The apparatus includes a signal amplifier that allows for the laser to be driven with DC as well as AC signals. The invention discusses methods for calibrating the laser system. The methods consist of first characterizing and calibrating the system with a factory calibration process. Thereafter, in the field, the system uses the results obtained in the factory calibration in conjunction with a power up calibration process in order to obtain performance that can meet strict requirements for precision and reliability. The process also consists of a method for continuously monitoring and adjusting the laser for any changes due to temperature or aging by measuring laser performance monitoring variables, utilizing the appropriate models and adjustment techniques and finally performing the adjustments while the laser is in use, that is, without the need to disconnect the laser from the system. The invention provides methods that follow a detailed process in order to enable someone to build a system that can be demonstrated to be in calibration within predetermined levels of accuracy as needed by a design using the ideas in the invention for a specific application.</p> |
