发明名称 |
VERFAHREN UND VORRICHTUNG ZUM KOMPENSIEREN EINES PHOTODETEKTORS |
摘要 |
The method and apparatus for compensating a photo-detector allows both regulation and monitoring of the photo-detector to be performed with a common digital controller. The controller accepts input of monitored operational parameters including received signal strength and temperature. The controller provides as an output a bias control signal which regulates a positive the positive or negative side bias voltage power supply for the photo-detector. The controller maintains the bias voltage to the photo-detector at levels which optimize the gain and signal-to-noise ratios for the photo-detector thereby facilitating the decoding of the received signal over a broad range of signal strengths and temperatures. The controller includes a corresponding digital signal strength and temperature compensators the outputs of which summed with a summer to provide the bias control signal. The digital signal strength compensator also provides as an output a monitor signal a level of which corresponds to the actual signal strength received by the photo-detector after compensation for the variable gain of the photo-detector resulting from the bias voltage level. A transceiver as well as methods and means for monitoring a photo-detector are also disclosed. |
申请公布号 |
AT507623(T) |
申请公布日期 |
2011.05.15 |
申请号 |
AT20030759696T |
申请日期 |
2003.10.03 |
申请人 |
FINISAR CORPORATION |
发明人 |
DOUMA, DARIN;STEWART, JAMES;HOFMEISTER, RUDY;HO, ANTHONY;HOSKING, STEPHEN |
分类号 |
H04B10/158;C08L23/04;C08L23/08 |
主分类号 |
H04B10/158 |
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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