发明名称 |
METHOD AND APPARATUS FOR COMPENSATING A PHOTO-DETECTOR |
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.
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申请公布号 |
KR20050053721(A) |
申请公布日期 |
2005.06.08 |
申请号 |
KR20057005612 |
申请日期 |
2005.03.31 |
申请人 |
FINISAR CORPORATION |
发明人 |
DOUMA DARIN JAMES;STEWART JAMES WALTER;HOFMEISTER RUDY;HO ANTHONY W.;HOSKING STEPHEN W. |
分类号 |
C08L23/04;C08L23/08;H04B10/158;H04B10/66;(IPC1-7):H04B10/08;H01J40/14;C08L23/00 |
主分类号 |
C08L23/04 |
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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