JP7201082B2 - 光モジュールおよびその製造方法 - Google Patents
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- 230000003287 optical effect Effects 0.000 title claims description 91
- 238000004519 manufacturing process Methods 0.000 title claims description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 117
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 109
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 98
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 91
- 229910052710 silicon Inorganic materials 0.000 claims description 81
- 239000010703 silicon Substances 0.000 claims description 81
- 229910052732 germanium Inorganic materials 0.000 claims description 71
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 71
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 47
- 239000000758 substrate Substances 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims description 8
- 238000005253 cladding Methods 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 238000000059 patterning Methods 0.000 claims description 7
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical group [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 5
- 229910052805 deuterium Inorganic materials 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 238000009751 slip forming Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 11
- 238000005530 etching Methods 0.000 description 7
- 238000000206 photolithography Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 230000005693 optoelectronics Effects 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- 150000003376 silicon Chemical class 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0232—Optical elements or arrangements associated with the device
- H01L31/02327—Optical elements or arrangements associated with the device the optical elements being integrated or being directly associated to the device, e.g. back reflectors
-
- 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
- G02B6/13—Integrated optical circuits characterised by the manufacturing method
- G02B6/132—Integrated optical circuits characterised by the manufacturing method by deposition of thin films
-
- 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
- G02B6/1228—Tapered waveguides, e.g. integrated spot-size transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
- H01L31/028—Inorganic materials including, apart from doping material or other impurities, only elements of Group IV of the Periodic Table
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
- H01L31/101—Devices sensitive to infrared, visible or ultraviolet radiation
- H01L31/102—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier
- H01L31/103—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier the potential barrier being of the PN homojunction type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
- H01L31/101—Devices sensitive to infrared, visible or ultraviolet radiation
- H01L31/102—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier
- H01L31/105—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier the potential barrier being of the PIN type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1804—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic Table
- H01L31/1808—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic Table including only Ge
-
- 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
- G02B2006/12035—Materials
- G02B2006/12061—Silicon
-
- 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
- G02B2006/12083—Constructional arrangements
- G02B2006/12123—Diode
-
- 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
- G02B2006/12133—Functions
- G02B2006/12152—Mode converter
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- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Optical Integrated Circuits (AREA)
- Light Receiving Elements (AREA)
Description
Claims (7)
- ゲルマニウムフォトダイオード、シリコンコアからなるシリコン光導波路、窒化シリコンコアからなる窒化シリコン光導波路がこれらの順に光学的に接続した光モジュールの製造方法であって、
シリコン基板の上に酸化シリコンからなる下部クラッド層を形成する第1工程と、
前記下部クラッド層の上にシリコン層を形成する第2工程と、
前記シリコン層をパターニングして第1領域に下部シリコンパターンを形成するとともに、前記第1領域に連続する第2領域に前記シリコンコアを形成する第3工程と、
前記下部シリコンパターンおよび前記シリコンコアを覆って前記下部クラッド層の上に、酸化シリコンからなる第1酸化シリコン層を形成する第4工程と、
前記第1酸化シリコン層の上に、窒化シリコンからなる窒化シリコン層を形成する第5工程と、
前記窒化シリコン層の、前記第1領域および前記第1領域に連続する前記第2領域の一部を除去し、前記第1酸化シリコン層を露出させる第6工程と、
前記第6工程の後で、前記第1酸化シリコン層および前記窒化シリコン層の上に酸化シリコンからなる第2酸化シリコン層を形成する第7工程と、
前記下部シリコンパターンの上部の、前記第2酸化シリコン層および前記第1酸化シリコン層に開口部を形成する第8工程と、
前記第2酸化シリコン層を選択成長マスクとして前記開口部の底部の前記下部シリコンパターンの上にゲルマニウムを選択的に成長してゲルマニウムパターンを形成し、前記下部シリコンパターンおよび前記ゲルマニウムパターンよりなる前記ゲルマニウムフォトダイオードを形成する第9工程と、
前記第2酸化シリコン層および前記窒化シリコン層をパターニングして、前記第2領域の一部から前記第2領域に連続する第3領域にかけて、前記窒化シリコンコアを形成し、前記窒化シリコンコアの上に前記第2酸化シリコン層の一部が配置された状態とする第10工程と、
前記ゲルマニウムフォトダイオード、前記シリコンコア、および前記窒化シリコンコアの上に酸化シリコンからなる上部クラッド層を形成する第11工程と
を備えることを特徴とする光モジュールの製造方法。 - 請求項1記載の光モジュールの製造方法において、
前記窒化シリコン層は、SiD4、およびN2を原料ガスとしたECRプラズマCVD法により形成する
ことを特徴とする光モジュールの製造方法。 - シリコン基板と、
前記シリコン基板の上に形成された酸化シリコンからなる下部クラッド層と、
前記下部クラッド層の上の第1領域に形成されたゲルマニウムフォトダイオードと、
前記下部クラッド層の上の前記第1領域に連続する第2領域に形成されたシリコンコアと、
前記シリコンコアを覆って前記下部クラッド層の上に形成された、酸化シリコンからなる第1酸化シリコン層と、
前記第1酸化シリコン層の上の、前記第2領域の一部から前記第2領域に連続する第3領域にかけて形成された窒化シリコンコアと、
前記窒化シリコンコアの上に形成された、酸化シリコンからなる第2酸化シリコン層と、
前記第2酸化シリコン層の上に、前記ゲルマニウムフォトダイオード、および前記第2酸化シリコン層を覆って形成された酸化シリコンからなる上部クラッド層と
を備え、
前記ゲルマニウムフォトダイオードは、前記シリコンコアに連続して形成された下部シリコンパターンと、前記下部シリコンパターンの上に形成されたゲルマニウムパターンとから構成され、
前記ゲルマニウムフォトダイオード、前記シリコンコアからなるシリコン光導波路、前記窒化シリコンコアからなる窒化シリコン光導波路がこれらの順に光学的に接続した状態に形成されている
ことを特徴とする光モジュール。 - 請求項3記載の光モジュールにおいて、
前記第2酸化シリコン層は、前記窒化シリコンコアを覆って形成されていることを特徴とする光モジュール。 - 請求項3または4記載の光モジュールにおいて、
前記第2領域において、前記窒化シリコンコアは、前記シリコンコア上に重なるように配置されていることを特徴とする光モジュール。 - 請求項5記載の光モジュールにおいて、
前記シリコンコアの前記第3領域の側の先端部、および前記窒化シリコンコアの前記第1領域の側の先端部の少なくとも一方は、先端に向けて先細りとされている
ことを特徴とする光モジュール。 - 請求項3~6のいずれか1項に記載の光モジュールにおいて、
前記窒化シリコンコアに含まれている水素は、重水素とされている
ことを特徴とする光モジュール。
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Citations (5)
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JP2014220267A (ja) | 2013-05-01 | 2014-11-20 | 富士通株式会社 | 導波路型半導体受光装置及びその製造方法 |
JP2017191158A (ja) | 2016-04-12 | 2017-10-19 | 日本電信電話株式会社 | 光モジュールおよびその製造方法 |
US20170329081A1 (en) | 2016-05-16 | 2017-11-16 | Finisar Corporation | Adiabatically coupled optical system |
US20180231714A1 (en) | 2015-10-09 | 2018-08-16 | Caliopa N.V. | Optical coupling scheme |
JP2019003029A (ja) | 2017-06-15 | 2019-01-10 | 日本電信電話株式会社 | 光導波路およびその製造方法 |
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JP3774598B2 (ja) * | 1999-09-30 | 2006-05-17 | 株式会社日立製作所 | ポリマ導波路基板の製造方法およびポリマ導波路基板 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2014220267A (ja) | 2013-05-01 | 2014-11-20 | 富士通株式会社 | 導波路型半導体受光装置及びその製造方法 |
US20180231714A1 (en) | 2015-10-09 | 2018-08-16 | Caliopa N.V. | Optical coupling scheme |
JP2017191158A (ja) | 2016-04-12 | 2017-10-19 | 日本電信電話株式会社 | 光モジュールおよびその製造方法 |
US20170329081A1 (en) | 2016-05-16 | 2017-11-16 | Finisar Corporation | Adiabatically coupled optical system |
JP2019003029A (ja) | 2017-06-15 | 2019-01-10 | 日本電信電話株式会社 | 光導波路およびその製造方法 |
Non-Patent Citations (1)
Title |
---|
CHATTERJEE, Avijit,Waveguide integration silicon MSM photodetector in silicon nitride-on-SOI platform for visible and NIR wavelength band,Proceedings of SPIE Vol. 10528,2018年02月22日,105280X-1 - 105280X-6 |
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US20220328704A1 (en) | 2022-10-13 |
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