JP4337842B2 - 光送信回路 - Google Patents
光送信回路 Download PDFInfo
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- JP4337842B2 JP4337842B2 JP2006165171A JP2006165171A JP4337842B2 JP 4337842 B2 JP4337842 B2 JP 4337842B2 JP 2006165171 A JP2006165171 A JP 2006165171A JP 2006165171 A JP2006165171 A JP 2006165171A JP 4337842 B2 JP4337842 B2 JP 4337842B2
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- transistor
- terminal
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- optical transmission
- transmission circuit
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Description
[第1の実施形態]
[第2の実施形態]
Claims (4)
- 入力電気信号に応じた光信号を出力する光送信回路であって、
電流源を有するAPC回路であって、前記光信号の強度が一定になるように前記電流源の電流を制御する前記APC回路に接続され、前記電流源から電流を受ける電源端子と、
前記光信号を出力する半導体レーザ素子と、
一方及び他方の電流端子によって前記半導体レーザ素子に並列に接続されると共に当該他方の電流端子が接地端子に接続され、前記入力電気信号をその制御端子に受け、前記半導体レーザ素子に供給される電流を該入力電気信号に応じて分流する第1のトランジスタと、
一方の電流端子が前記第1のトランジスタの一方の電流端子に接続され、他方の電流端子が前記電源端子に接続され、制御端子が安定電位に接続された第2のトランジスタと、
前記第2のトランジスタの制御端子に接続された出力端子を有し、該出力端子を介して該第2のトランジスタの制御端子に一定に保持された直流電圧を印加する電圧発生回路と、
を備える光送信回路。 - 前記電圧発生回路はシャントレギュレータであり、
該シャントレギュレータの出力端子と前記電源端子との間に接続された第1の抵抗素子を更に備える請求項1に記載の光送信回路。 - 前記電源端子と前記電圧発生回路の出力端子との間に接続された第1の抵抗素子を更に備える請求項1に記載の光送信回路であって、
前記電圧発生回路は、前記第1の抵抗素子に直列に接続された第2の抵抗素子を含んでおり、
前記第2のトランジスタの制御端子は、前記第1および第2の抵抗素子の間に接続されている、請求項1に記載の光送信回路。 - 前記第1のトランジスタと前記第2のトランジスタとの間に直列に挿入されたインダクタを更に備える、請求項1〜3のいずれかに記載の光送信回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006165171A JP4337842B2 (ja) | 2006-06-14 | 2006-06-14 | 光送信回路 |
US11/808,559 US7978741B2 (en) | 2006-06-14 | 2007-06-11 | Optical transmitter with a shunt driving configuration and a load transistor operated in common gate mode |
Applications Claiming Priority (1)
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JP2006165171A JP4337842B2 (ja) | 2006-06-14 | 2006-06-14 | 光送信回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007336217A JP2007336217A (ja) | 2007-12-27 |
JP4337842B2 true JP4337842B2 (ja) | 2009-09-30 |
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Family Applications (1)
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JP2006165171A Active JP4337842B2 (ja) | 2006-06-14 | 2006-06-14 | 光送信回路 |
Country Status (1)
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JP (1) | JP4337842B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5003586B2 (ja) * | 2008-04-30 | 2012-08-15 | 住友電気工業株式会社 | 半導体レーザ駆動回路 |
JP2014096405A (ja) | 2012-11-07 | 2014-05-22 | Sumitomo Electric Ind Ltd | 光送信回路 |
CN105490162B (zh) * | 2016-01-30 | 2019-01-04 | 长春理工大学 | 大功率半导体激光高频调制电路 |
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2006
- 2006-06-14 JP JP2006165171A patent/JP4337842B2/ja active Active
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JP2007336217A (ja) | 2007-12-27 |
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