JP2013539071A - 双方向光電子装置におけるクロストークの低減 - Google Patents
双方向光電子装置におけるクロストークの低減 Download PDFInfo
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Abstract
【選択図】図21
Description
多チャンネルあるいは双方向光電子装置における電気的クロストークは、光検出器や、光源、光源の駆動回路、あるいは光検出器の増幅あるいはフィルター回路を含む、どのような数やメカニズム、あるいは経路によっても発生する。この様な電気的クロストークは、しばしば、これら二つのあるいは多数の要素間の容量結合あるいは誘導結合に起因するとされている。多チャンネルあるいは双方向光電子装置における光学的クロストークは光検出器や、光源、導波路、フィルター、光学スプリッターや光結合器、光タップ、あるいは他の光学的要素を含む、どのような数やメカニズム、あるいは経路によっても発生する。この様な光学的クロストークは、しばしば、これら二つのあるいは多数の要素間における、光の好ましくない散乱や、反射、あるいは伝送に起因するとされている。多チャンネルあるいは双方向光電子装置のサイズが小さくなるにつれて、電気的あるいは光学的クロストークは、通常、ますます深刻なものとなる。クロストーク(光学的あるいは電気的)を発生させる特定のメカニズムやメカニズムの結合とは無関係に、多チャンネルあるいは双方向光電子装置の適切な配置や適合によってクロストークを低減することは好ましいことである。
Claims (23)
- 二つまたはそれ以上の光電子部品;及び
前記光電子部品を封止するように配置された保護封止材料
を有し、
それぞれの光電子部品は:
(a)(i)対応する送信情報をエンコードするように変調された対応する光入力信号を受信するように、また(ii)対応する前記光入力信号に応じて、対応する前記送信情報をエンコードするように変調された対応する電気出力信号を生成するように配置された光検出器;または
(b)(i)対応する送信情報をエンコードするように変調された対応する電気入力信号を受信するように、また(ii)対応する前記電気入力信号に応じて、対応する前記送信情報をエンコードするように変調された対応する光出力信号を生成するように配置された光源
を有し、また
前記保護封止材料は中空誘電微小球体を含み、前記中空誘電微小球体は、前記保護封止材料中に存在する好ましくない電気信号から生ずるクロストークペナルティを、前記保護封止材料中に前記中空誘電微小球体を含まない多チャンネル装置によって示されるクロストークペナルティよりも低いレベルに低減するように、前記保護封止材料の体積中に分散された、多チャンネル光電子装置。 - 前記保護封止材料は更に光吸収体を含み、前記光吸収体は、前記保護封止材料中に存在する好ましくない光信号から生ずるクロストークペナルティを、前記保護封止材料中に前記光吸収体を含まない前記光電子装置によって示されるクロストークペナルティよりも低いレベルに低減するように、前記保護封止材料の体積中に分散された、請求項1に記載の装置。
- (a)(i)第一送信情報をエンコードするように変調された光入力信号を受信するように、また(ii)前記光入力信号に応じて、前記第一送信情報をエンコードするように変調された電気出力信号を生成するように配置された光検出器を有する第一光電子部品;
(b)(i)第二送信情報をエンコードするように変調された電気入力信号を受信するように、また(ii)前記電気入力信号に応じて、前記第二送信情報をエンコードするように変調された光出力信号を生成するように配置され、前記電気入力信号を受信する第一及び第二電気リードを有する光源を有する第二光電子部品;及び
(c)前記光検出器と前記光源を封止するように配置された保護封止材料であって、該保護封止材料は中空誘電微小球体を含み、前記中空誘電微小球体は、前記保護封止材料中に存在する好ましくない電気信号から生ずるクロストークペナルティを、前記保護封止材料中に前記中空誘電微小球体を含まない前記双方向光電子装置によって示されるクロストークペナルティよりも低いレベルに低減するように、前記保護封止材料の体積中に分散された保護封止材料、
を有する双方向光電子装置。 - 前記保護封止材料は更に光吸収体を含み、前記光吸収体は、前記保護封止材料中に存在する好ましくない光信号から生ずるクロストークペナルティを、前記保護封止材料中に前記光吸収体を含まない前記光電子装置によって示されるクロストークペナルティよりも低いレベルに低減するように、前記保護封止材料の体積中に分散された、請求項3に記載の装置。
- 前記光源に加えられた前記電気入力信号あるいは前記光源から発する前記光出力信号に対する前記光検出器の感度は、前記光源に加えられる電気入力信号及び前記光源から発する光出力信号がない場合の前記光検出器の感度の約3dB以内である請求項3または4に記載の装置。
- 前記光電子部品は共通の基板上に互いに約2mm以内に配置された請求項5に記載の装置。
- 前記光電子部品は、端から端の寸法が約10mm未満の共通の基板上に配置された請求項5に記載の装置。
- 前記光検出器は約3dBより小さいクロストークペナルティを示す請求項3または4に記載の装置。
- 前記光電子部品は共通の基板上に互いに約2mm以内に配置された請求項8に記載の装置。
- 前記光電子部品は、端から端の寸法が約10mm未満の共通の基板上に配置された請求項8に記載の装置。
- 前記誘電微小球体は、前記保護封止材料の誘電率が約1.7から約2.5の範囲となる量が存在する請求項1、2、3、4のいずれか一項に記載の装置。
- 前記誘電微小球体は、前記誘電微小球体を含む前記保護封止材料の平均誘電率が、前記誘電微小球体を含まない前記保護封止材料の誘電率よりも約25%から約50%低くなる量が存在する請求項1、2、3、4のいずれか一項に記載の装置。
- 前記保護封止材料は体積で約25%から約50%の前記誘電微小球体を含む請求項1、2、3、4のいずれか一項に記載の装置。
- 前記誘電微小球体は約40μmから約70μmの範囲の中央径を有する請求項1、2、3、4のいずれか一項に記載の装置。
- 前記中空誘電微小球体は中空シリカ微小球体から構成される請求項1、2、3、4のいずれか一項に記載の装置。
- 前記保護封止材料はシリコーン、エポキシ、あるいはポリウレタンポリマーから構成される請求項1、2、3、4のいずれか一項に記載の装置。
- 前記光電子部品は共通の基板上に互いに約2mm以内に配置された請求項1、2、3、4のいずれか一項に記載の装置。
- 前記光電子部品は、端から端の寸法が約10mm未満の共通の基板上に配置された請求項1、2、3、4のいずれか一項に記載の装置。
- 前記光電子装置内の自由光路の一つまたは複数の区分を満たし、前記保護封止材料の下の前記光電子装置の部分を封止するように配置された光封止材料を、更に有する請求項1、2、3、4のいずれか一項に記載の装置。
- 前記光電子装置内の自由光路の一つまたは複数の区分を満たし、前記保護封止材料の下の前記光電子装置の部分を封止するように配置された光封止材料を、更に有する請求項1、2、3、4のいずれか一項に記載の装置。
- 前記光吸収体は、保護封止材料の減衰係数κが前記光電子装置の動作波長域に対して約1cm−1から約200cm−1の範囲となる量が存在する請求項2または4に記載の装置。
- 前記光吸収体は前記保護封止材料中に分散された炭素粒子から構成される請求項2または4に記載の装置。
- 前記保護封止材料は重量で約0.1%から約2%の炭素粒子を含む請求項22に記載の装置。
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PCT/US2011/034356 WO2011139845A2 (en) | 2010-04-28 | 2011-04-28 | Cross-talk reduction in a bidirectional optoelectronic device |
PCT/US2011/041919 WO2011163644A2 (en) | 2010-06-25 | 2011-06-25 | Cross-talk reduction in a bidirectional optoelectronic device |
USPCT/US2011/041919 | 2011-06-25 | ||
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