发明名称 |
Drive circuit for electro-absorption modulator and optical transmitter employing the same |
摘要 |
The present invention relates to A drive circuit can stabilize a bias voltage of an optical modulator to realize long distance transmission by preventing degradation of waveform, even if there is a dispersion on a characteristic of an electro-absorption modulator according to temperature and a secular change. The drive circuit supplies a driving voltage to an electro-absorption modulator which adsorbs a carrier light, depending on the driving voltage and outputting an intensity-modulated signal, and a peak value detector for detecting a peak value of a voltage at an anode of the electro-absorption modulator, and a bias current supplying circuit for supplying a bias current to control the driving voltage according to a difference between the peak value detected by the peak value detector and a predetermined value. <IMAGE>
|
申请公布号 |
EP0911997(A2) |
申请公布日期 |
1999.04.28 |
申请号 |
EP19980105015 |
申请日期 |
1998.03.19 |
申请人 |
FUJITSU LIMITED |
发明人 |
IMAI, KEISUKE;HAYASHI, AKIHIKO |
分类号 |
G02F1/015;G02F1/01;G02F1/025;H01S5/00;H01S5/026;H04B10/07;H04B10/40;H04B10/50;H04B10/516;H04B10/54;H04B10/564;H04B10/60;H04B10/61;(IPC1-7):H04B10/155 |
主分类号 |
G02F1/015 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|