| 摘要 |
PURPOSE:To enable the integration of functions of a photo modulator by a method wherein the electrode controlling the following current is arranged on the route for the current between the active region and the electrode of a semiconductor light emitting element. CONSTITUTION:One electrode of a laser, e.g., the P-side electrode is represented by the numeral 31, and the N-side electrodes by the numerals 32 and 33. Control electrodes 37 and 38 are provided on the route for the current reaching said electrodes 32 and 33, respectively. Thereby, the action of field effect transistor is performed for each, thus enabling to construct the photo modulator by means of this semiconductor device. |
