JP5573386B2 - 半導体光集積素子及びその製造方法 - Google Patents
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Description
図1は、実施の形態1に係る半導体光集積素子を示す上面図である。1つのn型InP基板10上に、レーザダイオード12、変調器14、レーザダイオード12から出た光を変調器14に導く接続導波路16、及び、変調器14から出た光を出射端面18に導く出射導波路20が集積されている。
図6は、実施の形態2に係る半導体光集積素子を示す上面図である。図7は、図6の領域Xを拡大した上面図である。図8は図7のA−A´に沿った断面図であり、図9は図7のB−B´に沿った断面図であり、図10は図7のC−C´に沿った断面図である。実施の形態2では、接続導波路16におけるコア層70の幅がレーザダイオード12から変調器14に向かうほど広くなる。
図25は、実施の形態3に係る半導体光集積素子を示す上面図である。図26は、図25のA−A´に沿った断面図である。実施の形態3では、出射導波路20は、コア層70の両サイドが半導体で埋め込まれた埋込型導波路を採用している。そして、出射導波路20の幅は、出射導波路20における2つの溝22,24の間隔により規定され、変調器14から出射端面18に向かうほど広くなる。また、出射導波路20のコア層70の幅は、変調器14から出射端面18に向かうほど狭くなる。
図28は、実施の形態4に係る半導体光集積素子を示す上面図である。実施の形態4では、変調器として電界吸収型の変調器86を用いている。実施の形態2と同様に、接続導波路16のコア層70の幅がレーザダイオード12から変調器86に向かうほど広くなる。このため、実施の形態2と同様に、レーザダイオード12と変調器86の接続部での放射損失を低減することができる。
12 レーザダイオード
14,86 変調器
16 接続導波路
18 出射端面
20 出射導波路
46,70 コア層
54 p型InP層(半導体)
56 n型InP層(半導体)
58 FeドープInP層(半導体)
76 半導体積層構造
80 リッジ構造
84 窓構造
Claims (4)
- 基板と、
前記基板上に集積されたレーザダイオード及び変調器と、
前記レーザダイオードから出た光を前記変調器に導く接続導波路とを備え、
前記レーザダイオードは、コア層の両サイドが半導体で埋め込まれた埋込型導波路を採用し、
前記変調器は、コア層の両サイドが半導体で埋め込まれないハイメサリッジ導波路を採用し、
前記レーザダイオード及び前記変調器における前記コア層はそれぞれストライプ状であり、
前記接続導波路は、コア層の両サイドが半導体で埋め込まれた埋込型導波路を採用し、
前記接続導波路の幅は、前記レーザダイオードから前記変調器に向かうほど狭くなり、
前記接続導波路における前記コア層の幅は、前記レーザダイオードから前記変調器に向かうほど広くなることを特徴とする半導体光集積素子。 - 前記基板上に集積され、前記変調器から出た光を出射端面に導く出射導波路を更に備え、
前記出射導波路は、コア層の両サイドが半導体で埋め込まれた埋込型導波路を採用し、
前記出射導波路の幅は、前記変調器から前記出射端面に向かうほど広くなり、
前記出射導波路における前記コア層の幅は、前記変調器から前記出射端面に向かうほど狭くなることを特徴とする請求項1に記載の半導体光集積素子。 - 前記出射導波路は、前記コア層が前記出射端面の近傍で途切れた窓構造を更に備えることを特徴とする請求項2に記載の半導体光集積素子。
- 基板上に、コア層を有する半導体積層構造を形成する工程と、
前記半導体積層構造をパターニングしてリッジ構造を形成する工程と、
前記リッジ構造の両サイドを半導体で埋め込む工程と、
前記リッジ構造及び前記半導体をエッチングして、レーザダイオード、変調器、及び前記レーザダイオードから出た光を前記変調器に導く接続導波路を形成する工程とを備え、
前記レーザダイオードを形成する領域における前記リッジ構造の幅は、前記変調器を形成する領域における前記リッジ構造の幅よりも狭く、
前記接続導波路を形成する領域における前記リッジ構造の幅は、前記レーザダイオードから前記変調器に向かうほど広くなり、
前記レーザダイオード及び前記接続導波路は、前記コア層の両サイドが前記半導体で埋め込まれた埋込型導波路を採用し、
前記変調器は、前記コア層の両サイドが前記半導体で埋め込まれないハイメサリッジ導波路を採用し、
前記接続導波路の幅は、前記レーザダイオードから前記変調器に向かうほど狭くなることを特徴とする半導体光集積素子の製造方法。
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US13/020,028 US8526478B2 (en) | 2010-06-10 | 2011-02-03 | Semiconductor optical integrated element |
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JP2012227332A (ja) * | 2011-04-19 | 2012-11-15 | Sumitomo Electric Ind Ltd | リッジ型半導体レーザ及びその製造方法 |
JP5767864B2 (ja) * | 2011-06-07 | 2015-08-26 | 日本オクラロ株式会社 | 光素子、光素子を含む変調器モジュール、光素子を含むレーザ集積変調器モジュール、及び、光素子の製造方法 |
JP2014007295A (ja) * | 2012-06-25 | 2014-01-16 | Mitsubishi Electric Corp | 光半導体装置及びその製造方法 |
JP6256311B2 (ja) * | 2014-11-17 | 2018-01-10 | 三菱電機株式会社 | 半導体光素子およびその製造方法 |
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JP7127346B2 (ja) * | 2017-06-27 | 2022-08-30 | 住友電気工業株式会社 | 多モード干渉器、マッハツェンダ変調器 |
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JP5326456B2 (ja) * | 2008-09-19 | 2013-10-30 | 富士通株式会社 | 光導波装置 |
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US9484714B2 (en) | 2015-03-11 | 2016-11-01 | Mitsubishi Electric Corporation | Method for manufacturing optical semiconductor device having modulator with hollowed regions between waveguides |
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