JP7155007B2 - フォトニック集積回路におけるレーザアライメントのための技術 - Google Patents
フォトニック集積回路におけるレーザアライメントのための技術 Download PDFInfo
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Description
本願は、2016年2月19日に出願された米国特許仮出願第62/297,735号の優先権主張出願であり、この米国特許仮出願を参照により引用し、この記載内容全体を本明細書の一部とする。
Claims (23)
- フォトニック集積回路(PIC)であって、
テーパ付きレーザ合わせ面と、前記テーパ付きレーザ合わせ面の前縁から後退したレーザファセットと、を備えた半導体レーザと、
テーパ付き基板合わせ面と導波路を備えた基板とを有し、
前記半導体レーザが前記基板にアライメントされるときに、前記テーパ付きレーザ合わせ面の前記前縁は、前記テーパ付き基板合わせ面に接触して、前記半導体レーザの前記レーザファセットを出るレーザビームと前記導波路との間のアライメント誤差を減少させるよう構成されている、PIC。 - 前記テーパ付きレーザ合わせ面の形状および前記テーパ付き基板合わせ面の形状は、外力が前記半導体レーザに加えられると、前記半導体レーザを前記基板にアライメントするよう構成されている、請求項1記載のPIC。
- 前記半導体レーザが前記基板にアライメントされると、前記基板の後壁は、前記半導体レーザの後側部分に接触するよう構成され、前記基板の側壁は、前記半導体レーザの側面に接触するよう構成されている、請求項2記載のPIC。
- 前記半導体レーザの前記側面の一部分は、前記半導体レーザが前記基板にアライメントされると、前記基板の隙間部分の上方に配置されるよう構成されている、請求項3記載のPIC。
- 前記外力は、前記半導体レーザから前記基板に向かう方向に加えられる、請求項2記載のPIC。
- 前記テーパ付きレーザ合わせ面の形状は、三角形または台形である、請求項1記載のPIC。
- 前記テーパ付き基板合わせ面の形状は、三角形、または台形である、請求項1記載のPIC。
- 前記テーパ付きレーザ合わせ面の第1のエッジは、前記テーパ付き基板合わせ面に接触し、前記テーパ付きレーザ合わせ面の第2のエッジは、前記テーパ付き基板合わせ面に接触しない、請求項1記載のPIC。
- 前記テーパ付き基板合わせ面は、湾曲したエッジを有し、前記湾曲したエッジは、前記基板との前記半導体レーザのアライメント中、前記半導体レーザに加えられる外力を分散させるよう構成されている、請求項1記載のPIC。
- 前記導波路は、前記レーザファセットを出た前記レーザビームを受け取るよう構成されている、請求項1記載のPIC。
- 前記レーザファセットは、レーザ光が前記レーザファセットを出る方向に対して角度が付けられ、前記導波路の前縁は、前記レーザファセットと同様に同じ方向に対して角度が付けられ、前記レーザファセットの前記角度および前記導波路の前記前縁の前記角度は、前記導波路から前記レーザファセットへの前記レーザビームの後方反射を減少させるよう構成されている、請求項10記載のPIC。
- 前記レーザファセットと前記導波路の前記前縁は、同一方向に角度が付けられている、請求項11記載のPIC。
- 前記レーザファセットは、レーザ光が前記レーザファセットを出る方向に対して垂直方向または水平方向に角度が付けられている、請求項11記載のPIC。
- 前記半導体レーザは、前記基板との電気接続部を形成するよう構成された接触面を有し、
前記基板は、前記半導体レーザを受け入れるよう構成されたランディング領域を更に有し、前記ランディング領域は、
前記テーパ付き基板合わせ面と、
前記半導体レーザの前記接触面に電気的に結合するよう構成された接触パッドとを有する、請求項1記載のPIC。 - はんだが前記接触パッドと前記半導体レーザの前記接触面との間に施されている、請求項14記載のPIC。
- 前記ランディング領域は、
前記接触パッドに配置されたはんだ層と、
前記接触パッドに配置された前記はんだ層から前記はんだを受け入れるよう構成されたランオフ領域とを更に有する、請求項14記載のPIC。 - 前記ランオフ領域は、前記はんだ層からのはんだを前記接触パッドから引き離すことによってはんだを受け入れるよう構成されている、請求項16記載のPIC。
- 前記ランオフ領域は、前記接触パッドに対して垂直に角度が付けられている、請求項17記載のPIC。
- フォトニック集積回路(PIC)を作製する方法であって、前記方法は、
半導体レーザを基板上に配置するステップを含み、前記半導体レーザは、テーパ付きレーザ合わせ面と、前記テーパ付きレーザ合わせ面の前縁から後退したレーザファセットと、を有し、前記基板は、テーパ付き基板合わせ面と導波路を有し、
前記テーパ付きレーザ合わせ面の前記前縁と前記テーパ付き基板合わせ面との接触を用いて、前記半導体レーザの前記レーザファセットを出るレーザビームと前記導波路との間のアライメント誤差を減少させて、前記半導体レーザを前記基板にアライメントするステップを含む、方法。 - 外力を前記半導体レーザから前記基板に向かう方向で前記半導体レーザに加えるステップを更に含む、請求項19記載の方法。
- 前記テーパ付き基板合わせ面の湾曲したエッジを用いて前記外力を分散させるステップを更に含む、請求項20記載の方法。
- 前記半導体レーザを前記基板上に配置する前記ステップに先立って、はんだを前記半導体レーザの接触面に付着させるステップを更に含み、前記半導体レーザを前記基板上に配置する前記ステップは、前記半導体レーザの前記接触面を前記基板の接触パッドに取り付けるステップを含み、前記はんだは、前記接触面と前記接触パッドの間に配置される、請求項19記載の方法。
- 前記はんだの表面張力が前記テーパ付きレーザ合わせ面を引いて該テーパ付きレーザ合わせ面を前記テーパ付き基板合わせ面に取り付ける、請求項22記載の方法。
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US20170244216A1 (en) | 2017-08-24 |
US10027087B2 (en) | 2018-07-17 |
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