JP2015191031A - 光デバイスおよびその製造方法 - Google Patents
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- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
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- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
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- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
- G02B6/13—Integrated optical circuits characterised by the manufacturing method
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/015—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/017—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells
- G02F1/01708—Structures with periodic or quasi periodic potential variation, e.g. superlattices, quantum wells in an optical wavequide structure
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/015—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F1/025—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction in an optical waveguide structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
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- H—ELECTRICITY
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- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/22—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure
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Abstract
【解決手段】 この光デバイスは、埋設される絶縁層の厚さが200nm以下であるSOI基板101と、SOI基板101上にIII−V族化合物半導体材料により形成される光導波路102と、光導波路102の下側でSOI基板101内に形成され、光導波路102内からSOI基板101への光の漏洩を防止するための光漏洩防止層106とを含む。
【選択図】 図3
Description
Claims (14)
- 埋設される絶縁層の厚さが200nm以下であるSOI基板と、
前記SOI基板上にIII−V族化合物半導体材料により形成される光導波路と、
前記光導波路の下側で前記SOI基板内に形成され、前記光導波路内から前記SOI基板への光の漏洩を防止するための光漏洩防止層とを含む、光デバイス。 - 前記光漏洩防止層は、前記SOI基板の表面から前記絶縁層を貫通するように設けられた溝内に、光の屈折率が前記III−V族化合物半導体材料より小さい材料により形成される、請求項1に記載の光デバイス。
- 前記光漏洩防止層の幅は、前記光導波路の幅より広く形成される、請求項1に記載の光デバイス。
- 前記光漏洩防止層は、空気層であり、
前記光デバイスは、前記空気層上に前記光導波路を支持するための光導波路支持層をさらに含む、請求項1に記載の光デバイス。 - 前記光導波路支持層は、前記光導波路と同一の前記III−V族化合物半導体材料により形成される、請求項4に記載の光デバイス。
- 前記光導波路は、少なくとも1つの量子井戸層を含む、請求項1に記載の光デバイス。
- 前記少なくとも1つの量子井戸層が設けられた前記光導波路の部分に光素子が設けられる、請求項6に記載の光デバイス。
- 前記光素子は、光変調器もしくはレーザ素子または光検波器である、請求項7に記載の光デバイス。
- 前記SOI基板は、CMOS(Complementary Metal Oxide Semiconductor)プロセスで使用され、CMOS素子が設けられる、請求項1に記載の光デバイス。
- 光デバイスの製造方法であって、
埋設される絶縁層の厚さが200nm以下であるSOI基板をエッチングし、前記SOI基板の表面から前記絶縁層を貫通する溝を形成する工程と、
III−V族化合物半導体層を形成する工程と、
前記溝が形成された前記SOI基板と、前記III−V族化合物半導体層とを、前記溝の開口部が前記III−V族化合物半導体層に向くようにして貼り合わせる工程と、
前記III−V族化合物半導体層をエッチングして光導波路を形成する工程とを含む、光デバイスの製造方法。 - 前記光導波路を形成する工程では、前記溝の幅より狭い幅の該光導波路を形成する、請求項10に記載の光デバイスの製造方法。
- 前記貼り合わせる工程では、前記III−V族化合物半導体層により覆われた前記溝により空気層を形成し、
前記光導波路を形成する工程では、該光導波路と同時に、前記空気層上に該光導波路を支持するための光導波路支持層を形成する、請求項10に記載の光デバイスの製造方法。 - 前記光導波路上を覆う樹脂膜を形成する工程をさらに含む、請求項10に記載の光デバイスの製造方法。
- 前記III−V族化合物半導体層を形成する工程では、少なくとも1つの量子井戸層を含むように該III−V族化合物半導体層を形成する、請求項10に記載の光デバイスの製造方法。
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