JP5081837B2 - フィードバックを制御する光受信機アセンブリ、光送受信モジュール及び光電受信パッケージ - Google Patents
フィードバックを制御する光受信機アセンブリ、光送受信モジュール及び光電受信パッケージ Download PDFInfo
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- 239000003990 capacitor Substances 0.000 claims description 65
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- VLLVVZDKBSYMCG-UHFFFAOYSA-N 1,3,5-trichloro-2-(2-chlorophenyl)benzene Chemical compound ClC1=CC(Cl)=CC(Cl)=C1C1=CC=CC=C1Cl VLLVVZDKBSYMCG-UHFFFAOYSA-N 0.000 description 5
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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Description
一実施形態における光受信機アセンブリは、例えば、光送受信モジュール内で使用するための光サブアセンブリ内に格納されている光電パッケージの部分を形成する。そのようなものとして、光受信機は、光通信ネットワークの不可欠な部分を形成することが可能である。
Claims (20)
- フィードバックを制御する光受信機アセンブリであって、
接地された基準面と、
コンデンサと、
前記コンデンサ上に設けられた光検出器であって、前記コンデンサの上面電極が、前記光検出器の底面電極と電気的に接続されている、光検出器と、
前記基準面上に設けられ、前記光検出器によって生成された電気信号を受け取って増幅する増幅器と、
前記基準面と前記コンデンサとの間に介在するように前記基準面に取り付けられたアイソレータであって、前記基準面の一部に取り付けられた誘電性底面層と、前記増幅器の接地用端子および前記コンデンサの底面電極の双方と電気的に接続された導電性金属上面プレートとを含む、前記アイソレータとを備え、
前記アイソレータの前記誘電性底面層により前記増幅器の前記接地用端子と前記基準面との電気的接続を抑止するとともに、前記増幅器の前記接地用端子が、前記アイソレータの前記導電性金属上面プレートと前記コンデンサと前記光検出器とを介して、前記増幅器の入力用端子と電気的に接続されている、光受信機アセンブリ。 - 前記アイソレータの前記導電性金属上面プレート及び前記コンデンサを介して、前記増幅器の前記接地用端子に存在しているフィードバックを前記光検出器に伝送する、請求項1に記載の光受信機アセンブリ。
- 前記フィードバックの少なくとも一部が前記光受信機アセンブリから実質的に打ち消されるように、前記アイソレータの前記導電性金属上面プレートと前記コンデンサと前記光検出器とを介して、前記増幅器の前記入力用端子に前記フィードバックを伝送する、請求項2に記載の光受信機アセンブリ。
- 前記光検出器がアバランシェ・フォトダイオードである、請求項1に記載の光受信機アセンブリ。
- 前記基準面が光受信機パッケージの基盤の接地面である、請求項1に記載の光受信機アセンブリ。
- 前記アイソレータは、接地された前記基準面から前記光検出器を容量的に絶縁する、請求項5に記載の光受信機アセンブリ。
- 前記アイソレータは、前記光受信機アセンブリにおける寄生キャパシタンスおよび寄生インダクタンスを抑制する、請求項1に記載の光受信機アセンブリ。
- 光送受信モジュールであって、
格納部分と、
前記格納部分内に少なくとも部分的に含まれるプリント回路基板と、
前記プリント回路基板と電気的に接続された送信用光サブアセンブリと、
光受信パッケージを含み、前記プリント回路基板と電気的に接続された受信用光サブアセンブリと、
を備え、前記光受信パッケージは、
接地基準面を画定するパッケージ基盤と、
光信号を受け取って電気信号に変換するように構成されたフォトダイオードと、
前記フォトダイオードの第1電極と電気的に接続された第1電極を有するコンデンサと、
前記フォトダイオードによって生成された電気信号を増幅するトランスインピーダンス増幅器であって、前記接地基準面上に設けられ、前記フォトダイオードの第2電極と電気的に接続されて前記フォトダイオードから前記電気信号を受け取る入力用端子を含むトランスインピーダンス増幅器と、
アイソレータであって、
前記接地基準面上に設けられた誘電材料層と、
前記誘電材料層の上に位置し、前記コンデンサの第2電極に取り付けられた導電性金属層であって、前記トランスインピーダンス増幅器の接地用端子および前記コンデンサの前記第2電極の双方と電気的に接続された導電性金属層と、
を含む、前記アイソレータとを備え、
前記アイソレータの前記誘電材料層により前記トランスインピーダンス増幅器の前記接地用端子と前記接地基準面との電気的接続を抑止するとともに、前記トランスインピーダンス増幅器の前記接地用端子が、前記アイソレータの前記導電性金属層と前記コンデンサと前記フォトダイオードとを介して、前記トランスインピーダンス増幅器の前記入力用端子と電気的に接続されている、
光送受信モジュール。 - 前記アイソレータの前記導電性金属層は、前記導電性金属層から前記トランスインピーダンス増幅器の前記接地用端子であるボンド・パッドまで延在する少なくとも1つのワイヤ・ボンドを介して前記トランスインピーダンス増幅器の前記接地用端子と電気的に接続されている、請求項8に記載の光送受信モジュール。
- 前記導電性金属層と前記トランスインピーダンス増幅器の前記接地用端子として機能する複数のボンド・パッドとの間で第1および第2のワイヤ・ボンドが非平行方向に延在する、請求項9に記載の光送受信モジュール。
- 前記コンデンサの前記第1電極を介して前記フォトダイオードに電源が供給される、請求項8に記載の光送受信モジュール。
- 前記トランスインピーダンス増幅器の前記接地用端子が、前記導電性金属層および前記コンデンサを介して前記電源と電気的に接続されている、請求項8に記載の光送受信モジュール。
- 光電受信パッケージであって、
接地基準面を画定するパッケージ基盤と、
第1のコンデンサに設けられ、光信号を受け取って電気信号に変換するように構成されたフォトダイオードであって、前記第1のコンデンサの第1電極が前記フォトダイオードの第1電極と電気的に接続されている、フォトダイオードと、
前記フォトダイオードによって生成された電気信号を増幅するトランスインピーダンス増幅器であって、前記接地基準面上に設けられ、前記電気信号を受け取るべく前記フォトダイオードの第2電極と電気的に接続された入力用端子を含むトランスインピーダンス増幅器と、
アイソレータであって、
前記接地基準面上に設けられた誘電材料の底面層と、
前記底面層上の導電性金属層であって、前記第1のコンデンサの第2電極に接続され、少なくとも1つのボンド・ワイヤを介して前記トランスインピーダンス増幅器の接地用端子と電気的に接続される導電性金属層と、
を含むアイソレータとを備え、
前記アイソレータの前記底面層により前記トランスインピーダンス増幅器の前記接地用端子と前記接地基準面との電気的接続を抑止するとともに、前記トランスインピーダンス増幅器の前記接地用端子が、前記アイソレータの前記導電性金属層と前記コンデンサと前記フォトダイオードとを介して、前記トランスインピーダンス増幅器の前記入力用端子と電気的に接続されている、
光電受信パッケージ。 - 前記トランスインピーダンス増幅器の前記接地用端子と前記トランスインピーダンス増幅器の前記入力用端子との間に、前記アイソレータの前記導電性金属層と前記第1のコンデンサと前記フォトダイオードとを介した電気経路が確立されている、請求項13に記載の光電受信パッケージ。
- 前記電気経路は、前記トランスインピーダンス増幅器の前記接地用端子に存在しているフィードバック信号を前記トランスインピーダンス増幅器の前記入力用端子に伝送する経路を提供することにより前記フィードバック信号の少なくとも一部を打ち消す、請求項14に記載の光電受信パッケージ。
- 前記アイソレータの前記底面層により前記電気経路は前記接地基準面から容量的に絶縁されている、請求項15に記載の光電受信パッケージ。
- 前記アイソレータおよび前記トランスインピーダンス増幅器は、各々前記アイソレータの前記導電性金属層と前記トランスインピーダンス増幅器の前記接地用端子として機能する複数のボンド・パッドとの間に延在する2つのボンド・ワイヤを介して電気的に接続され、前記2つのボンド・ワイヤは、互いに非平行な関係で位置している、請求項16に記載の光電受信パッケージ。
- 前記フォトダイオードの電源が、前記パッケージ基盤のリードによって供給され、かつ前記第1のコンデンサの前記第1電極に与えられ、前記リードと前記第1のコンデンサとの間にデカップリング容量が介在する、請求項17に記載の光電受信パッケージ。
- 前記光電受信パッケージが光送受信モジュール内に含まれる、請求項18に記載の光電受信パッケージ。
- 前記光送受信モジュールが、少なくとも10GHzの割合で光信号を受け取るように構成されている、請求項19に記載の光電受信パッケージ。
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US77478706P | 2006-02-17 | 2006-02-17 | |
US60/774,787 | 2006-02-17 | ||
PCT/US2007/062397 WO2007098433A2 (en) | 2006-02-17 | 2007-02-19 | Discrete bootstrapping in an optical receiver to prevent signal feedback |
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EP (1) | EP1989796A4 (ja) |
JP (1) | JP5081837B2 (ja) |
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