| 摘要 |
<p>The invention provides a low-cost light transmitter for accurately controlling the variation of optical output characteristics of a light-emitting semiconductor device due to temperature changes. An optical transmitter comprises a light-emitting semiconductor device; a drive circuit for supplying drive current to the light-emitting semiconductor device; an optical output detector for detecting the optical output power from the light-emitting semiconductor device; a storage for storing temperature characteristic information including the temperature characteristic data about the drive current supplied to the light-emitting semiconductor device and the temperature characteristic data about an optical output detector; a temperature detector for detecting temperature; and a control circuit for controlling the operation of the drive circuit based on the temperature characteristic information read from the storage according to the temperature detected by the temperature detector and on the results of detection by the optical output detector.</p> |
