JP5909827B2 - 双方向光電子装置 - Google Patents
双方向光電子装置 Download PDFInfo
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Classifications
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4246—Bidirectionally operating package structures
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4251—Sealed packages
- G02B6/4253—Sealed packages by embedding housing components in an adhesive or a polymer material
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/4283—Electrical aspects with electrical insulation means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
- H04B10/43—Transceivers using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
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- H—ELECTRICITY
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- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/697—Arrangements for reducing noise and distortion
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12083—Constructional arrangements
- G02B2006/12104—Mirror; Reflectors or the like
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12083—Constructional arrangements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Communication System (AREA)
- Semiconductor Lasers (AREA)
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- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
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 (16)
- 導波路基板と、
前記導波路基板上の光導波路層と、
前記光導波路層から形成された光導波路であって、対応する光導波モードを実質上閉じ込めるように配置される前記光導波路と、
前記導波路基板上の配線と、
前記導波路基板上又は前記光導波路層に配置され、前記配線から受けた電気入力信号に応じて前記光導波路に光信号を発する光源と、
前記導波路基板上又は前記光導波路層に配置され、前記光導波路から受けた光入力信号に応じて電気信号を生成して前記配線へ伝達する光検出器と、
少なくとも前記光源、前記光検出器及び前記配線を封止するように配置された保護封止材料と、
を有し、
前記保護封止材料は中空誘電微小球体及び光吸収体を含み、
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場合の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、かつ、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、前記光吸収体を含まない場合の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、前記中空誘電微小球体及び前記光吸収体が前記保護封止材料中に分散された双方向光電子装置であって、
前記光導波路層から形成された集光器であって、前記光導波路層の側面及び当該側面上の実質上不透明なコーティングから構成される前記集光器と、
前記光導波路層から形成されたライトトラップであって、前記光導波路層の側面及び当該側面上の実質上不透明なコーティングから構成される前記ライトトラップと、
を有し、
前記ライトトラップの側面は前記光導波路層の対応する螺旋領域を規定するように配置され、前記螺旋領域は前記ライトトラップの開口部及び閉口端を含み、
前記集光器の側面は、前記開口部を通過して前記ライトトラップの中へと迷光信号を伝播するように配置され、
前記集光器及びライトトラップの少なくとも一部が前記保護封止材料によって封止されている双方向光電子装置。 - 前記集光器は前記ライトトラップの開口部に設けられた少なくとも三つの集光器であり、第一集光器と第三集光器に挟まれるように第二集光器が設けられており、前記第三集光器は、前記第一集光器及び前記第二集光器よりも前記ライトトラップの閉口端の近くに配置されかつ前記ライトトラップと一体に形成されている一方、前記第一集光器及び前記第二集光器は前記ライトトラップと別体に形成されており、
前記光導波路は前記ライトトラップにおいて螺旋を巻く方向へと湾曲した湾曲部分を有し、前記光導波路は前記湾曲部分から見て前記光源側で前記第一集光器と前記第二集光器の間を通過し、かつ、前記光導波路は湾曲部分から見て前記光源から離れた側で前記第一集光器と前記ライトトラップの間を通過するように設けられており、
前記第一集光器の前記側面は、前記ライトトラップにおいて螺旋を巻く方向へと湾曲している請求項1に記載の双方向光電子装置。 - 前記集光器及び前記ライトトラップの前記側面は、前記光導波路層のエッチング端から構成される請求項1又は2に記載の双方向光電子装置。
- 前記集光器及び前記ライトトラップの前記側面の前記実質上不透明のコーティングは、反射性あるいは吸収性を有する金属層を含む請求項1〜3のいずれかに記載の双方向光電子装置。
- 前記第一集光器の前記側面における湾曲形状を延長してなる楕円の一つの焦点に前記光源が配置され、前記楕円のもう一つの焦点に前記ライトトラップの開口部が配置される請求項2に記載の双方向光電子装置。
- 前記光源及び前記光検出器は共通の導波路基板上に互いに2mm以内に配置された請求項1〜5のいずれかに記載の双方向光電子装置。
- 前記光源及び前記光検出器は、端から端の寸法が10mm未満の共通の導波路基板上に配置された請求項1〜6のいずれかに記載の双方向光電子装置。
- 前記光検出器は3dBより小さいクロストークペナルティを示す請求項1〜7のいずれかに記載の双方向光電子装置。
- 前記中空誘電微小球体は、前記保護封止材料の誘電率が1.7から2.5の範囲となる量が存在する請求項1〜8のいずれかに記載の双方向光電子装置。
- 前記中空誘電微小球体は、前記中空誘電微小球体を含む前記保護封止材料の平均誘電率が、前記中空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25%から50%低くなる量が存在する請求項1〜9のいずれかに記載の双方向光電子装置。
- 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、前記保護封止材料は重量で0.1%から2%の炭素粒子を含み、
前記保護封止材料は体積で25%から50%の前記中空誘電微小球体を含む、請求項1〜10のいずれかに記載の双方向光電子装置。 - 前記中空誘電微小球体は40μmから70μmの範囲の中央径を有する請求項1〜11のいずれかに記載の双方向光電子装置。
- 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1〜12のいずれかに記載の双方向光電子装置。
- 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1〜13のいずれかに記載の双方向光電子装置。
- 前記双方向光電子装置内における自由光路の一つ又は複数の区分を満たし、前記保護封止材料の下の前記光源及び前記光検出器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1〜14のいずれかに記載の双方向光電子装置。
- 前記光吸収体は、前記保護封止材料の減衰係数κが前記光源及び前記光検出器の動作波長域に対して1cm−1から200cm−1の範囲となる量が存在する請求項1〜15のいずれかに記載の双方向光電子装置。
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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 | ||
PCT/US2011/050485 WO2012033724A2 (en) | 2010-09-06 | 2011-09-06 | Cross-talk reduction in a bidirectional optoelectronic device |
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US8750712B2 (en) | 2014-06-10 |
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