WO2000008505A1 - Optical module - Google Patents
Optical module Download PDFInfo
- Publication number
- WO2000008505A1 WO2000008505A1 PCT/JP1999/003927 JP9903927W WO0008505A1 WO 2000008505 A1 WO2000008505 A1 WO 2000008505A1 JP 9903927 W JP9903927 W JP 9903927W WO 0008505 A1 WO0008505 A1 WO 0008505A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- optical module
- light
- optical element
- main surface
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 221
- 239000004065 semiconductor Substances 0.000 claims description 34
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 abstract description 26
- 238000010586 diagram Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- 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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
-
- 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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73257—Bump and wire connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3011—Impedance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3025—Electromagnetic shielding
Definitions
- the present invention relates to an optical module in which an optical element, an optical waveguide, and the like are hybrid-integrated.
- An optical module is a device that converts electricity into light or light into electricity.
- the optical module has a structure in which optical elements, optical waveguides, electric circuits, and the like are hybrid-integrated.
- the optical module is used, for example, in an optical fiber communication system.
- FIG. 3 is a schematic diagram showing an arrangement relationship between an optical waveguide and an optical element of a conventional optical module. This is disclosed in Optical Technology Contact Vol. 36, No. 4 (1998).
- a concave portion 42 is provided on the main surface of the mounting substrate 40.
- the optical element 44 is placed in the recess 42.
- An optical waveguide 46 is mounted on the main surface of the mounting substrate 40.
- the end portion 48 of the optical waveguide 46 is located on the optical element 44.
- the ends 48 are mirrored.
- the light 50 emitted from the optical element 44 is reflected at the end 48 and enters the core 52 of the optical waveguide 46.
- the light 50 travels in the direction of the arrow in the core 52 and is transmitted to an optical fiber or the like.
- An object of the present invention is to provide an optical module that can be reduced in size and weight. Disclosure of the invention
- An optical module includes: a mounting member having a main surface; wiring formed on the mounting member; and an optical element mounted on the main surface and electrically connected to the wiring.
- the mounting member is an optical waveguide that guides light emitted from the optical element or light incident on the optical element.
- an optical waveguide separate from the mounting member is mounted on the mounting member.
- the mounting member and the optical waveguide are the same member. Therefore, the optical module can be made thin. As a result, the optical module can be reduced in size and weight.
- the present invention includes two components: a mounting member (optical waveguide) and an optical element. Therefore, in the present invention, the alignment of the optical element is facilitated, and the joining accuracy can be improved.
- the light entrance or exit of the optical element may be arranged so as to face the main surface.
- an optical element for example, there is a surface emitting laser.
- a light reflecting member may be provided on the optical waveguide. Light is transmitted between the optical element and the optical waveguide via the light reflecting member.
- the present invention relates to an optical element for emitting or entering light, a light guide having a main surface, the optical element being mounted on the main surface, and guiding light so as to emit from the optical element or enter the optical element.
- An optical module comprising: a waveguide;
- This invention has the same effect as the invention of (1).
- the optical element is mounted on a bare chip so that a portion of the optical element from which light is emitted or incident faces the optical waveguide, and a light transmissive material is provided between the optical element and the optical waveguide.
- the optical element and the optical waveguide may be fixed in a state where the adhesive member is interposed.
- Bare chip mounting can be smaller and lighter than package mounting. This In the aspect, since the optical element is mounted on a bare chip, it is possible to reduce the size and weight of the optical module.
- the optical element and the optical waveguide are fixed by a light transmitting adhesive member. Thereby, the optical element and the optical waveguide can be fixed, and an optical path between the optical element and the optical waveguide can be secured.
- the optical waveguide may have a changing portion for changing the traveling direction of light, and the optical element may be located at a position overlapping with the changing portion. As a result, the light traveling direction can be changed efficiently.
- a change portion is formed in the optical waveguide, and the optical element is directly mounted on the optical waveguide having the change portion.
- the relative position (distance, etc.) between the optical element and the change unit can always be kept constant, so that the focus is not shifted with respect to the change unit.
- the optical waveguide and the optical element are arranged apart from each other. For this reason, even if both are fixed in another part, the relative position between them may change. Therefore, even if the position can be adjusted at the time of the alignment, there is a possibility that a misalignment may occur due to various factors (heat, external force, etc.) thereafter.
- a force s that is “at a position overlapping with the changed portion”, and “overlapping” as used herein means that when viewed from the optical element or the changed portion in a projection shape, both are at positions where both appear to overlap. It is to be arranged.
- a semiconductor element different from the optical element may be further mounted on the main surface of the optical waveguide, and a resin for integrally sealing the optical element and the semiconductor element may be provided.
- the wiring connecting them can be shortened.
- the wiring on the mounting board side can be formed in a single layer, and the wiring can be easily formed.
- the strength of the optical module can be improved.
- the degree of integration of the optical module can be improved.
- the cost can be reduced by improving the degree of integration.
- the resin may have a light shielding property.
- the semiconductor element When light hits the semiconductor element, the semiconductor element May work. Malfunction can be prevented by sealing the semiconductor element with a resin having a light-shielding property.
- the semiconductor element may have a function of driving the optical element.
- the optical module can be an additional module. Further, high integration and low cost of the optical module can be achieved.
- a circuit may be directly formed on the main surface of the optical waveguide.
- Laminating circuits directly on the main surface of the optical waveguide eliminates the need for mounting semiconductor elements. Therefore, it is not necessary to consider connection reliability between different components.
- the connection between the IC elements can be eliminated, thereby improving the impedance characteristics and noise characteristics of the wiring and minimizing the influence of the delay.
- the degree of integration on the main surface of the optical waveguide can be improved, and high integration and low cost of the optical module can be achieved.
- the present invention includes an optical element and an optical waveguide function of guiding light emitted from the optical element or light incident on the optical element, and electrically connects the optical element or a semiconductor element attached thereto.
- An optical module comprising: This invention has the same effect as the invention of (1).
- the present invention provides an optical module comprising: a mounting member having a main surface and side surfaces; and an optical element mounted on the main surface, wherein the mounting member has a function of an optical waveguide, and The output terminal is on the side of the mounting member.
- an optical input / output terminal means a terminal to which light is input, a terminal to which light is output, or a terminal to which light is input / output.
- the optical element includes any of an element that emits light and an element that receives light.
- the mounting member may be in any form, such as a plate shape or a film shape, as long as it can mount an optical element.
- FIG. 1 is a schematic diagram of a cross section of an optical module according to an embodiment of the present invention
- FIG. 2 is a schematic plan view of an optical module according to an embodiment of the present invention
- FIG. 3 is a schematic diagram showing an arrangement relationship between an optical waveguide and an optical element of a conventional optical module.
- FIG. 1 is a schematic diagram of a cross section of an optical module according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram of the plane.
- the glass mounting board 10 also serves as an optical waveguide. Therefore, the core 12 and the clad 14 are formed inside the mounting substrate 10 along the mounting surface of the mounting substrate 10 on which the optical element is mounted.
- the core 12 and the clad 14 are formed in the mounting substrate 1'0 using a thin film forming technique, photolithography, or the like.
- One end 18 of the optical waveguide is a 45-degree mirror that refracts light 90 degrees.
- the 45-degree mirror is manufactured by cutting the end 18 of the optical waveguide using, for example, a 90-degree V-shaped diamond saw.
- the optical output terminal 29 is located on the side surface of the mounting board 10 and at the other end of the optical waveguide. Light propagates through the core 12 and is output from the optical output terminal 29.
- Wirings 16a, 16b, and 16c made of metal foil or the like are formed on the mounting board 10.
- the forces at which wirings 16a, 16b, and 16c are formed on the main surface of mounting substrate 10 may be formed on the side surface of mounting substrate 10.
- wiring is formed on the surface (rear surface) opposite to the main surface of the mounting substrate 10, and electrical connection with the main surface is made through through holes formed in the mounting substrate 10. May be planned.
- wiring may be formed on any two or all of the main surface, side surface, and back surface of the mounting substrate 10.
- the widest surface of the mounting board 10 is often the main surface, but the main surface is the surface on which the optical element can be mounted even if it is not the widest surface.
- the semiconductor chip 20 is electrically connected to the wirings 16a and 16c by flip chips. That is, metal bumps are formed on the electrodes of the semiconductor chip 20, The semiconductor chip 20 is pulled down and connected to the mounting board 10 which is a wiring board. On the semiconductor chip 20, for example, a CMOS circuit is formed. Wiring 16c is an electric input / output terminal.
- one semiconductor chip 20 is attached, but a plurality of semiconductor chips 20 may be attached. For example, a plurality of semiconductor chips 20 may be attached so as to correspond to each of the plurality of optical elements.
- the surface emitting laser 22 is electrically connected to the wiring 16b by a flip chip.
- An electrode 24 is formed on one surface of the surface emitting laser 22.
- an electrode 26 and a light emission port 28 are formed.
- the surface emitting laser 22 is arranged on the main surface of the mounting substrate 10 so that light emitted from the emission port 28 is reflected at the end 18 and passes through the core 12.
- the electrode 26 and the wiring 16b are electrically connected.
- the emission port 28 and the electrode 26 are sealed with a transparent resin 34 having optical transparency.
- the transparent resin 34 is a light-transmitting silicone resin.
- the electrode 24 is electrically connected to the wiring 16a by a wire 30.
- a plurality of surface emitting lasers 22 are provided as examples of the plurality of photoelements, but the present invention is not limited to this.
- one optical element may be provided, and this optical element may have a plurality of light entrances or exits.
- one optical element having a single light entrance or exit may be provided.
- the semiconductor chip 20 and the surface emitting laser 22 are sealed with a resin 36 having a light shielding property.
- the resin 36 is provided so as not to obstruct the light path between the optical element (for example, the surface emitting laser 22) and the optical waveguide (for example, the core 12).
- Resin 36 is an epoxy resin.
- the components of the epoxy resin are 10 to 50 percent epoxy and 90 to 50 percent filler (such as silica).
- three optical waveguides are arranged in parallel. That is, three cores 12 serving as three optical waveguides are formed inside the mounting substrate 10.
- the three cores 12 (optical waveguides) are arranged in parallel, and the optical output terminals 29 of the cores 12 (optical waveguides) are formed on the same side surface of the mounting substrate 10. ing. Then, the three surface emitting lasers 22 connected to each optical waveguide, and the mounting substrate 10 P99 / 03927
- An electric signal from the semiconductor chip 20 is transmitted to the surface emitting laser 22.
- the surface emitting laser 22 oscillates the light 32.
- the light 32 exits from the exit 28 and is reflected 90 degrees at the end 18 of the optical waveguide. Then, the light travels in the direction of the arrow in the core 12 and is transmitted to an optical fiber or the like via the optical output terminal 29.
- the mounting substrate 10 also serves as an optical waveguide. Therefore, the light module can be made thin. As a result, the size and weight of the optical module can be reduced.
- the mounting substrate 10 optical waveguide
- the surface emitting laser 22 two members related to the positioning are the mounting substrate 10 (optical waveguide) and the surface emitting laser 22. is there. Therefore, conventionally, the complicated and time-consuming joining of the surface emitting laser and the optical waveguide is simplified, and the joining strength can be improved. In addition, the cost for joining can be reduced accordingly.
- the traveling direction of light is changed by a 45-degree mirror.
- the present invention is not limited to this, and other components that can change the traveling direction of light applicable to the present invention may be used.
- the traveling direction of light is changed at the end of the waveguide.
- the present invention is not limited to this, and the light traveling direction may be changed at a portion other than the end of the waveguide.
- the mounting position of the surface emitting laser 22 is limited because the surface emitting laser 22 has to make light incident on the optical waveguide.
- the semiconductor chip 20 can be mounted at any position on the main surface of the mounting board 10.
- the surface emitting laser 22 and the semiconductor chip 20 are mounted on the mounting substrate 10 by flip chips.
- the present invention is not limited to this, and the mounting of the surface emitting laser 22 or the semiconductor chip 20 is not limited to a flash-up board. Ending or the like may be applied.
- a semiconductor chip 20 is mounted on a mounting board 10.
- a circuit may be formed by a thin film transistor on the main surface of the mounting substrate 10 and may be used instead of the semiconductor chip 20.
- a circuit for transmitting a signal to the surface emitting laser 22 may be formed by the thin film transistor circuit and the semiconductor chip 20.
- the mounting substrate 10 is made of glass.
- the present invention is not limited to this, and a film made of a polymer or the like may be used as the mounting substrate 10.
- the surface emitting laser 22 is an optical element.
- the present invention is not limited to this, and other optical elements such as a laser diode and a photodiode may be used.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99931488A EP1020747A4 (en) | 1998-08-05 | 1999-07-22 | OPTICAL MODULE |
KR10-2000-7003642A KR100489147B1 (ko) | 1998-08-05 | 1999-07-22 | 광 모듈 |
US09/509,669 US6793405B1 (en) | 1998-08-05 | 1999-07-22 | Optical module |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/233608 | 1998-08-05 | ||
JP23360898 | 1998-08-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000008505A1 true WO2000008505A1 (en) | 2000-02-17 |
Family
ID=16957725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/003927 WO2000008505A1 (en) | 1998-08-05 | 1999-07-22 | Optical module |
Country Status (6)
Country | Link |
---|---|
US (1) | US6793405B1 (ja) |
EP (1) | EP1020747A4 (ja) |
KR (1) | KR100489147B1 (ja) |
CN (1) | CN1287624A (ja) |
TW (1) | TW432236B (ja) |
WO (1) | WO2000008505A1 (ja) |
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US7217957B2 (en) | 2002-02-14 | 2007-05-15 | Sumitomo Electric Industries, Ltd. | Optical transmission module |
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- 1999-07-22 KR KR10-2000-7003642A patent/KR100489147B1/ko not_active IP Right Cessation
- 1999-07-22 US US09/509,669 patent/US6793405B1/en not_active Expired - Fee Related
- 1999-07-22 EP EP99931488A patent/EP1020747A4/en not_active Withdrawn
- 1999-07-22 CN CN99801754.XA patent/CN1287624A/zh active Pending
- 1999-07-28 TW TW088112827A patent/TW432236B/zh not_active IP Right Cessation
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US7257297B2 (en) | 2002-06-18 | 2007-08-14 | Seiko Epson Corporation | Optical communication module with particular fiber guide hole, optical-communication-module production method, and electronic device |
JP4506216B2 (ja) * | 2004-03-16 | 2010-07-21 | ソニー株式会社 | 光結合装置及びその製造方法 |
JP2005265885A (ja) * | 2004-03-16 | 2005-09-29 | Sony Corp | 光結合装置、光結合装置用の支持体、及びこれらの製造方法 |
JP2006323316A (ja) * | 2005-05-20 | 2006-11-30 | Sumitomo Bakelite Co Ltd | 光導波路構造体 |
JP2006323317A (ja) * | 2005-05-20 | 2006-11-30 | Sumitomo Bakelite Co Ltd | 光導波路構造体 |
US7248768B2 (en) | 2005-09-30 | 2007-07-24 | Doosan Corporation | Optical interconnection module and method of manufacturing the same |
JP2007156026A (ja) * | 2005-12-02 | 2007-06-21 | Kyocera Corp | 光配線モジュール |
US8045829B2 (en) | 2005-12-02 | 2011-10-25 | Kyocera Corporation | Optical waveguide member, optical wiring board, optical wiring module and method for manufacturing optical waveguide member and optical wiring board |
JP4668049B2 (ja) * | 2005-12-02 | 2011-04-13 | 京セラ株式会社 | 光配線モジュール |
JP2007178950A (ja) * | 2005-12-28 | 2007-07-12 | Kyocera Corp | 光配線基板および光配線モジュール |
JP2008065287A (ja) * | 2006-08-10 | 2008-03-21 | Matsushita Electric Works Ltd | 光電気変換装置 |
US8575529B2 (en) | 2006-08-10 | 2013-11-05 | Panasonic Corporation | Photoelectric converter providing a waveguide along the surface of the mount substrate |
JP2008176071A (ja) * | 2007-01-18 | 2008-07-31 | Omron Corp | 光伝送モジュール、電子機器、及び光伝送モジュールの製造方法 |
JP2008216712A (ja) * | 2007-03-06 | 2008-09-18 | Furukawa Electric Co Ltd:The | 光部品の実装方法 |
JP2009145817A (ja) * | 2007-12-18 | 2009-07-02 | Toppan Printing Co Ltd | 光基板およびその製造方法 |
JP2009163178A (ja) * | 2008-01-10 | 2009-07-23 | Hitachi Cable Ltd | 光素子と基板との接合構造及び光送受信モジュール並びに光モジュールの製造方法 |
JP2009223340A (ja) * | 2009-07-06 | 2009-10-01 | Mitsubishi Electric Corp | 光学部品、およびそれに用いられる光路変換デバイス |
JP2010061171A (ja) * | 2009-12-16 | 2010-03-18 | Sony Corp | 光結合装置及びその製造方法 |
JP2017194579A (ja) * | 2016-04-21 | 2017-10-26 | 日本電信電話株式会社 | 光電子集積回路の実装方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1287624A (zh) | 2001-03-14 |
EP1020747A1 (en) | 2000-07-19 |
TW432236B (en) | 2001-05-01 |
US6793405B1 (en) | 2004-09-21 |
EP1020747A4 (en) | 2003-01-02 |
KR20010024407A (ko) | 2001-03-26 |
KR100489147B1 (ko) | 2005-05-17 |
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