发明名称 |
Method and device for obtaining error signals for spatial beam regulation of an optical coherent receiver |
摘要 |
In connection with a method and a device for the control of the optical alignment of two lightwaves in the course of a coherent superimposed reception a spatial beam regulation is achieved in that the light of a local laser (5) is superimposed on the received light (1), that then the signal obtained in this manner is divided into two identical beam portions (1A, 1B) by means of a beam splitter (2) and that a respective error signal (14, 16) is generated from the two portions by means of a respective detector arrangement (3, 4), so that the two error signal portions result in a spatial error signal. The original data signal (15) is again obtained by the addition with the correct signs of the error signal portions.
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申请公布号 |
US5991062(A) |
申请公布日期 |
1999.11.23 |
申请号 |
US19970898484 |
申请日期 |
1997.07.22 |
申请人 |
OERLIKON CONTRAVES AG |
发明人 |
FISCHER, EDGAR;WANDERNOTH, BERNHARD |
分类号 |
G02F2/00;H04B10/02;H04B10/10;H04B10/105;H04B10/148;H04B10/18;H04B10/22;(IPC1-7):H04B10/06 |
主分类号 |
G02F2/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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