JP5195261B2 - 光送信装置 - Google Patents
光送信装置 Download PDFInfo
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- JP5195261B2 JP5195261B2 JP2008265144A JP2008265144A JP5195261B2 JP 5195261 B2 JP5195261 B2 JP 5195261B2 JP 2008265144 A JP2008265144 A JP 2008265144A JP 2008265144 A JP2008265144 A JP 2008265144A JP 5195261 B2 JP5195261 B2 JP 5195261B2
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- circuit
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- driver circuit
- frequency component
- laser diode
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なお、LPFは、使用ビットレートの1/2を超える周波数成分をカットし、HPFは、使用ビットレートの1/2未満の周波数成分をカットする。
Claims (2)
- 光信号を出力するレーザダイオードと、該レーザダイオードの光出力をモニタするフォトダイオードを備え、該フォトダイオードのモニタ値により前記レーザダイオードのバイアス電流および変調電流を負帰還制御する光送信装置であって、
前記バイアス電流は、前記モニタ値の平均値に基づく負帰還信号により制御され、前記変調電流は、個別に制御可能なレーザダイオードドライバ回路とプリエンファシスドライバ回路とにより生成され、
前記レーザダイオードドライバ回路は前記モニタ値をローパスフィルタ(LPF)と第1のピーク値検出回路により生成した第1の信号により、前記プリエンファシスドライバ回路は前記モニタ値をハイパスフィルタ(HPF)と第2のピーク値検出回路により生成した第2の信号により、それぞれ独立に負帰還制御されることを特徴とする光送信装置。 - 前記LPFは、使用ビットレートの1/2を超える周波数成分をカットし、前記HPFは、使用ビットレートの1/2未満の周波数成分をカットすることを特徴とする請求項1に記載の光送信装置。
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JP2008265144A JP5195261B2 (ja) | 2008-10-14 | 2008-10-14 | 光送信装置 |
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JP2008265144A JP5195261B2 (ja) | 2008-10-14 | 2008-10-14 | 光送信装置 |
Publications (2)
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JP2010097988A JP2010097988A (ja) | 2010-04-30 |
JP5195261B2 true JP5195261B2 (ja) | 2013-05-08 |
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JP2008265144A Active JP5195261B2 (ja) | 2008-10-14 | 2008-10-14 | 光送信装置 |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011249413A (ja) * | 2010-05-24 | 2011-12-08 | Sumitomo Electric Ind Ltd | レーザダイオード駆動回路 |
JP5799549B2 (ja) * | 2011-03-31 | 2015-10-28 | 住友電気工業株式会社 | 光変調器駆動回路 |
JP2013183147A (ja) * | 2012-03-05 | 2013-09-12 | Hitachi Ltd | レーザーダイオード駆動装置および駆動方法、並びにそれを用いた光伝送システム |
JP6024273B2 (ja) * | 2012-08-09 | 2016-11-16 | 住友電気工業株式会社 | 光送信装置 |
KR101432250B1 (ko) | 2012-11-26 | 2014-09-25 | 경희대학교 산학협력단 | 가시광 통신 시스템과, 그 시스템에서의 데이터 변조 방법 및 성능 정보 궤환 방법 |
WO2016194091A1 (ja) * | 2015-05-29 | 2016-12-08 | 株式会社日立製作所 | 光通信モジュールおよびそれを備える光通信装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2613670B2 (ja) * | 1990-09-28 | 1997-05-28 | シャープ株式会社 | 半導体レーザの駆動回路 |
JP3418268B2 (ja) * | 1995-02-17 | 2003-06-16 | 株式会社リコー | 半導体レーザ制御装置 |
JP2002335041A (ja) * | 2001-05-07 | 2002-11-22 | Sony Corp | レーザ駆動装置及びレーザ駆動方法 |
JP2006073739A (ja) * | 2004-09-01 | 2006-03-16 | Taiyo Yuden Co Ltd | 発光素子駆動装置および方法 |
US20070009267A1 (en) * | 2005-06-22 | 2007-01-11 | Crews Darren S | Driving a laser using an electrical link driver |
US7477850B2 (en) * | 2005-10-31 | 2009-01-13 | Agere Systems Inc. | Optical signal jitter reduction via electrical equalization in optical transmission systems |
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