| 摘要 |
PURPOSE:To realize an optical duplex circuit by one laser by inputting two emitting rays of light outputted from both end faces of the laser diode to an optical line respectively. CONSTITUTION:A light outputted from one end face of a laser diode 1 is inputted to a 1st line 2 and a light outputted from the other end face is inputted to a decoupler 3 to branch the light to give one of the branched rays of light to a 2nd line 2' and to input the other to the adjusting means 4 of a laser driving current. Thus, while one laser gives the rays of light to two lines, a part of the inputted rays of light to the lines is directed to the adjusting means 4 for laser stabilization by means of the optical decoupler 3, then the laser light is stabilized. |
