JP2007019492A - 単一のステップmocvdによって製造される導波格子を組み込んだ埋め込みヘテロ構造デバイス - Google Patents
単一のステップmocvdによって製造される導波格子を組み込んだ埋め込みヘテロ構造デバイス Download PDFInfo
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Abstract
【解決手段】デバイスが、成長面、成長マスク、成長導波コアメサおよびクラッド層を有する光電子デバイスまたは透明な導波デバイスである。成長マスク132は、半導体表面上に配置されており、周期的な格子の輪郭形状を有する細長い成長窓を画定する。光導波コアメサ140は、成長窓に配置されており、台形の断面形状を有している。クラッド層160は、光導波コアメサを覆い、成長マスクの少なくとも一部上に延びている。このようなデバイスは、成長面を有するウェハを設け、光導波コアメサを、マイクロ選択領域成長によって第1の温度で成長面上に成長させ、光導波コアメサを、第1の温度より低い第2の温度でクラッド材料で覆うことによって製造する。
【選択図】図3G
Description
本出願は、2004年2月25日付けの「Buried Heterostructure Device Fabricated by single Step MOCVD」と題する米国出願第10/787,349号の一部継続出願であり、この文献は、参照により本願に組み込まれる。
光電子デバイスは、遠隔通信、データ保存および情報伝達を含む多くの用途で使用されている。光電子デバイスの特定のタイプ、例えばレーザダイオード、光電子変調器、半導体光学増幅器、半導体利得媒体などは、光導波路内に配置された活性領域を有している。光導波路は、典型的には、異なる構造を組み込んでおり、その上にデバイスを製造する基板の主平面に対する横方向、つまり平行方向に、かつ基板の主平面に対する横切り方向、つまり直交方向に光を導く。横切り方向には、半導体材料と活性層を挟んでいる活性領域のクラッド層との間の屈折率コントラストによって光が導かれる。横方向には、クラッド層および活性層を含む層構造内で少なくとも部分的に画定されているリッジ導波構造または埋め込みヘテロ構造導波路によって光が導かれる。
n型バッファ層151は、厚み約100nmのn型InPの層であって、n型クラッド層120の成長面122上に、成長窓134内に成長させたものである。
Claims (23)
- 成長面、
前記成長面上に設けられ、周期的な格子の輪郭形状を有する細長い成長窓を画定する成長マスク、
前記成長窓内に配置され、台形の断面形状を有している光導波コアメサ、および
前記光導波コアメサを覆い、前記成長マスクの少なくとも一部上に延びているクラッド層を備えているデバイス。 - 前記成長面が[100]結晶配向を有しており、
前記光導波コアメサが、[111]結晶は以降を有するサイドウォールを有している、請求項1に記載のデバイス。 - 前記成長マスクが、前記成長面の[011]結晶配向に平行に整列された向かい合うエッジを有している、請求項2に記載のデバイス。
- 前記光導波コアメサが、構造内で均一であり、前記クラッド層より大きい屈折率を有している、請求項1に記載のデバイス。
- 前記デバイスが、分布帰還型(DFB)レーザであり、
前記光導波コアメサが、量子井戸構造を有している、請求項1に記載のデバイス。 - 前記量子井戸構造が、アルミニウム、ガリウム、インジウムおよびヒ素を含む量子井戸層を有している、請求項5に記載のデバイス。
- 前記量子井戸構造が、ガリウム、インジウム、ヒ素およびリンを含む量子井戸層を有している、請求項5に記載のデバイス。
- 前記光導波コアメサが、分離閉じ込めヘテロ構造を追加的に有しており、該構造内に前記量子井戸が配置されている、請求項5に記載のデバイス。
- 前記光導波コアメサが、クラッド層より大きな屈折率を有する材料を含み、前記周期的な格子の輪郭形状が、0.001〜0.002の屈折率差をもたらす、請求項5に記載のデバイス。
- 前記クラッド層が第1のクラッド層であり、
前記デバイスがさらに第2のクラッド層を有しており、
前記成長面が、前記第2のクラッド層の表面である、請求項1に記載のデバイス。 - 前記成長マスクおよび前記光導波コアメサの厚みが同様である。
- 成長チャンバを準備し、
成長面を有しているウェハを設け、
成長面上に成長マスクを形成し、該成長マスクが、周期的な格子の輪郭形状を有する細長い成長窓を画定し、
前記成長チャンバにおいて製造プロセスを行う、デバイス製造方法であって、
前記製造プロセスが、
マイクロ選択領域成長によって成長面上に光導波コアメサを成長させ、
製造後に前記成長チャンバからウェハを取り出すことなく、前記光導波コアメサを前記クラッド材料で覆うことを含む、デバイス製造方法。 - 前記成長マスクを、周期的な格子の輪郭形状を有するように形成することによって、光導波コアメサ内に屈折率差をもたらす、請求項12に記載の方法。
- 前記成長面が、[100]結晶配向を有しており、
前記形成することが、前記成長面の[100]結晶方向に平行な、前記成長マスクの向かい合うエッジが整列することを含む、請求項13に記載の方法。 - 前記製造プロセスが、前記形成することを完了した後にかつ前記覆うことが完了する前に行うエッチングプロセスを有していない、請求項13に記載の方法。
- 前記光導波コアメサが、傾斜したサイドウォールおよびサイドウォール間に延びる上面を有しており、
前記成長させることが、光導波コアメサを、吸着原子が光導波路のサイドウォールから上面に移動する温度より高い成長温度で成長させることを含み、
前記覆うことが、光導波コアメサのサイドウォールを避けて吸着原子が移動する温度より低い成長温度で、クラッド材料を成長させることを含む、請求項12に記載の方法。 - 前記覆うことが、前記成長マスクの一部上に横方向にクラッド材料を成長させることを含む、請求項16に記載の方法。
- 前記覆うことが、前記クラッド材料が、光導波コアメサの上面に加えサイドウォール上に成長させる成長条件下で、クラッド材料を成長させることを含む、請求項12に記載の方法。
- 成長面、
前記成長面上に設けられ、周期的な格子の輪郭形状を有する細長い成長窓を画定する成長マスク、
前記成長窓に配置され、台形の断面形状を有する光導波コアメサ、および
前記光導波コアメサを覆い、前記成長マスクの一部上に延びているクラッド層とを備えている、分布帰還型(DFB)レーザデバイスであって、
周期的な格子の輪郭形状によって、分布ブラッグ反射を得るのに十分な光導波コアメサで屈折率差が、前記光導波コアメサにもたらされる、分布帰還型レーザデバイス。 - 前記光導波コアメサが、幅を有するサイドウォールを有しており、
前記第1の成長温度が、吸着原子の表面拡散距離が、サイドウォールの幅より大きいような温度であり、
前記第2の成長温度が、前記吸着原子の表面拡散距離が、サイドウォールの幅より小さくなるような温度である、請求項19に記載の方法。 - 前記クラッド材料の副層を、マイクロ選択領域成長によって光導波コアメサ上に市長させることをさらに含む、請求項19に記載の方法。
- 前記クラッド材料の副層を成長させることが、前記第1の成長温度と前記第2の成長温度との間の温度に、成長温度を設定することを含む、請求項21に記載の方法。
- 前記成長マスクが多層構造を有しており、前記層の1つが、前記格子の輪郭形状を有している、請求項19に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/154,034 US7440666B2 (en) | 2004-02-25 | 2005-06-16 | Buried heterostucture device having integrated waveguide grating fabricated by single step MOCVD |
US11/154034 | 2005-06-16 |
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JP2007019492A true JP2007019492A (ja) | 2007-01-25 |
JP2007019492A5 JP2007019492A5 (ja) | 2009-07-30 |
JP5280614B2 JP5280614B2 (ja) | 2013-09-04 |
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TWI821302B (zh) * | 2018-11-12 | 2023-11-11 | 晶元光電股份有限公司 | 半導體元件及其封裝結構 |
US11133649B2 (en) * | 2019-06-21 | 2021-09-28 | Palo Alto Research Center Incorporated | Index and gain coupled distributed feedback laser |
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CN117613663B (zh) * | 2024-01-19 | 2024-05-10 | 武汉云岭光电股份有限公司 | 激光器及其制作方法 |
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Also Published As
Publication number | Publication date |
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KR101252469B1 (ko) | 2013-04-17 |
EP1742314A3 (en) | 2008-11-12 |
US7941024B2 (en) | 2011-05-10 |
CN1945365A (zh) | 2007-04-11 |
CN1945365B (zh) | 2010-10-13 |
US20050276557A1 (en) | 2005-12-15 |
JP5280614B2 (ja) | 2013-09-04 |
KR20060131683A (ko) | 2006-12-20 |
TW200735495A (en) | 2007-09-16 |
US20090068778A1 (en) | 2009-03-12 |
EP1742314A2 (en) | 2007-01-10 |
TWI333306B (en) | 2010-11-11 |
US7440666B2 (en) | 2008-10-21 |
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