WO2005071807A1 - 光電気複合モジュール - Google Patents
光電気複合モジュール Download PDFInfo
- Publication number
- WO2005071807A1 WO2005071807A1 PCT/JP2005/000640 JP2005000640W WO2005071807A1 WO 2005071807 A1 WO2005071807 A1 WO 2005071807A1 JP 2005000640 W JP2005000640 W JP 2005000640W WO 2005071807 A1 WO2005071807 A1 WO 2005071807A1
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- WIPO (PCT)
- Prior art keywords
- optical
- insulating layer
- waveguide
- light emitting
- lsi
- Prior art date
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Classifications
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- 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
-
- 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
-
- 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
- G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres
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- 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
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- 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
- H01L2224/481—Disposition
- H01L2224/48135—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
- H01L2224/48137—Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
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- 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
- H01L2224/73265—Layer and wire connectors
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- 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
Definitions
- the present invention relates to a photoelectric composite module, and more particularly to a high-speed photoelectric composite module on which a light emitting element, a driver IC, and the like are mounted.
- An optical transceiver also includes an optical transmitting unit and an optical receiving unit, and the module of the optical transmitting unit includes a driving LSI, a light emitting element such as a semiconductor laser, and an optical monitoring element such as a photodiode. .
- FIG. 7 shows a schematic diagram of a conventional photoelectric composite module.
- FIG. 7A is a schematic sectional view
- FIG. 7B is a schematic top view.
- the light emitting element 101 is mounted on the heat radiation board 141
- the lens 152 is arranged on the output side of the light emitting element 101
- the optical monitor element 102 is arranged close to the opposite side, and mounted on the wiring board 143 formed on the ceramic package.
- the driving LSI 103 is disposed further behind the optical monitor element 102.
- a photoelectric composite module having a structure in which a driving LSI and a light emitting element are arranged close to each other is also disclosed.
- a light emitting element and a driving LSI are brought close to each other, the driving LSI is connected to the outside via a high-speed line on a wiring board, and a wire for electrical connection is shortened.
- the optical monitor element is disposed on a mounting member on the wiring board, and the monitor light emitted from the side opposite to the output side of the light emitting element is used for the drive LSI. The light passes through above and is coupled to the optical monitoring element (see, for example, Patent Document 1).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-252407 (Pages 4 to 6, FIGS. 2 and 3)
- Patent Document 2 Japanese Patent Application Laid-Open No. 2003-232967
- the monitor light with the light emitting element has a beam spread, if the distance increases, the coupling loss between the light emitting element and the optical monitor element increases, and the power level of the monitor light falls below the allowable range of the optical monitor element. There was a problem.
- Patent Document 2 discloses a structure in which one of the optical monitoring element and the LD driving IC is arranged close to the light emitting element.
- the electrical wiring on the power waveguide in which the waveguide layer is formed on the insulating layer, is only connected to the leads, and the ground electrode required for stable high-speed transmission of 10 Gbit Zs level is required.
- the arrangement is difficult.
- the preamplifier on the waveguide is connected assuming a relatively long wire that can transmit lGbitZs level, and there is a difficulty in realizing high-speed transmission that requires 1 mm or less.
- an object of the present invention is to provide an optimal arrangement for suppressing an increase in loss of an optical coupling system and a photoelectric arrangement for achieving a close arrangement between a driving LSI and a light emitting element capable of high-speed operation.
- An object of the present invention is to provide a composite module.
- an opto-electric composite module includes a waveguide type optical element that generates an optical signal, an optical signal output surface of the waveguide type optical element, and a side opposite to the output surface.
- An insulating layer provided on the heat-radiating substrate, facing the at least one of the surfaces, and including an optical waveguide for transmitting the optical signal generated by the waveguide-type optical element; and an upper surface of the insulating layer.
- a drive LSI for supplying a current amplification signal to the waveguide-type optical element, and a driving high-speed signal line connecting the drive LSI and the waveguide-type optical element in a thickness direction of the insulating layer.
- the device may further include a high-speed transmission line for electric input that extends on the upper surface of the insulating layer in contact with the driving LSI and supplies an electric input signal to the driving LSI.
- the high-speed transmission line for electrical input includes an upper ground electrode extending in contact with the drive LSI and extending over the insulating layer, and a lower ground electrode extending over an upper surface of the heat radiation substrate on which the waveguide type optical element is installed.
- the configuration may be good.
- the ground electrode connecting portion may be a via extending upward and downward at a position in the insulating layer that does not interfere with the optical waveguide.
- the waveguide type optical element is a light emitting element, and is provided on the heat radiating substrate, and monitors the light emission of the light emitting element, and connects the drive LSI and the light emitting element to the insulating layer. And a DC line for feeding back the monitor signal of the optical monitor element to the drive LSI.
- the insulating layer may have a coplanar line including the upper ground electrode on an upper surface. Further, the insulating layer may be formed of a polymer resin material. [0019] Further, the optical device may further include an optical fiber that is installed on a guide mechanism on the heat radiating substrate on which the waveguide type optical element is installed and is connected to the optical waveguide to perform light input / output.
- a plurality of the optical waveguides are formed in an array, and the waveguide type optical element is connected to each of the optical waveguides.
- the line has a three-dimensional structure, the distance for transmitting and receiving signals can be extremely short, and various elements of the optical coupling system are arranged close to each other. Therefore, the coupling loss of the optical coupling system can be suppressed low. Therefore, it becomes possible to transmit high-speed signals at the lOGbitZs level while suppressing deterioration due to the effects of loss and reflection.
- the electric wiring and the optical wiring have a three-dimensional configuration, the close arrangement of the optical coupling system and the close arrangement of the light emitting element and the driving LSI can be independently optimized, and the module can be miniaturized. Become.
- optical element and the electric element can be mounted on the same substrate, the number of components and the number of steps can be reduced, and the mounting cost can be suppressed.
- the optical element is placed directly above the heat dissipation substrate, and the electric blocking in the insulating layer shape B is also prevented from reaching the heat dissipation substrate via the upper ground electrode, via, and the lower ground electrode above the resin layer. Since it is connected to the path, there is no problem in the heat dissipation of the optical element and the electric element.
- optical coupling can be performed with reference to the electrode pad and the optical waveguide formed in the platform, there is also an advantage that the optical coupling system can be mounted in a non-aligned manner.
- the photoelectric composite module of the present invention can be used, for example, for optical communication typified by a regional network, an inter-urban network, and an optical link between a server and a router.
- FIG. 1A is a schematic cross-sectional view showing the configuration of the photoelectric composite module according to the present invention.
- FIG. 1 (b) shows an arrangement of components constituting the photoelectric composite module according to the present invention, It is the top view which omitted relation.
- FIG. 2 is a plan view showing a wiring relationship with the drive LSI removed.
- an insulating layer 42 is laminated on a heat radiation substrate 41, an insulating layer 7 is provided on the insulating layer 42, a light emitting element 1 as a waveguide type optical element, a light monitoring element 2, Various layers and elements such as the driving LSI 3 are provided.
- An optical fiber 51 is arranged at a predetermined position of the insulating layer 42, and the insulating layer 7, the light emitting element 1, and the optical monitoring element 2 are arranged along the optical axis of the core 51a of the optical fiber 51.
- the light-emitting element 1 is an edge-emitting element, and has a structure in which front end face light is output forward (toward the optical waveguide 71 of the insulating layer 7).
- the light emitting element 1 is mounted on the insulating layer 42 such that the output portion la of the optical signal matches the height of the core 51a of the optical fiber 51.
- the light emitting element 1 receives the current amplitude signal from the driving LSI 3 and generates an optical signal, and outputs the optical signal also to the core 51 a of the optical fiber 51 with the height position of the output section la.
- the layer structure and the internal structure of the light emitting element 1 are structures suitable for coupling optical waveguides.
- the insulating layer 7 is disposed between the optical fiber 51 and the light emitting element 1, and makes the insulating layer 7, the light emitting element 1 and the optical fiber 51 close to each other.
- the insulating layer 7 has a built-in optical waveguide 71, and the optical waveguide 71 is aligned with the height position of the output section la of the light emitting element 1 and the height position of the core 51a of the optical fiber 51 so as to be on the insulating layer 42. It is installed in.
- the optical signal output from the light emitting element 1 directly enters the optical waveguide 71 of the insulating layer 7 from the output part la of the light emitting element la, and is high from the optical waveguide 71 of the insulating layer 7 to the core 51a of the optical fiber 51. Enter in efficiency.
- the internal structure of the insulating layer 7 is formed in a refractive index structure suitable for optical waveguide, and an optical waveguide 71 is formed inside the refractive index structure.
- the insulating layer 7 has characteristics such as a low dielectric constant and a low dielectric loss in order to realize a high-speed transmission line (described later). Examples of the material of the insulating layer 7 include a polymer resin material.
- the insulating layer 7 By selecting a polymer resin as the material of the insulating layer 7, it is possible to provide both high-speed electrical characteristics and light transmittance as an electric circuit, and thus the insulating layer 7 is suitable. That is, the use of a thick-film polymer resin as the material of the insulating layer 7 can reduce the parasitic capacitance, and the use of a polymer resin having a low dielectric constant and a low dielectric loss reduces the manufacturing accuracy of the high-speed transmission line. be able to. Then, if a resin having a low loss with respect to the signal wavelength is used, an optical waveguide 71 having a low dielectric loss can be manufactured in the insulating layer 7.
- the drive LSI 3 is flip-chip mounted with bumps 66 on a high-speed signal line 64 described later formed on the upper surface of the insulating layer 7.
- the driving LSI 3 supplies the light emitting element 1 with a current amplitude signal required for driving in response to an external electric signal (modulation signal of a specified voltage), and causes the light emitting element 1 to generate an optical signal.
- the drive LSI 3 has a function of adjusting the current amplitude according to the current value from the optical monitor element 2 and performing automatic power control (Auto Power Control, APC).
- APC automatic power control
- the drive LSI 3 does not need to have both the function of adjusting the current amplitude for the voltage modulation signal and the APC function, so another LSI can share the APC function.
- the optical monitoring element 2 is arranged close to the rear of the light emitting element 1 (the surface opposite to the optical waveguide 71), and is mounted on the heat dissipation board 41 via the insulating layer 42.
- the optical monitor element 2 is a waveguide type or surface type photodetector.
- the optical signal output backward from the light emitting element 1 is received by the light receiving surface 2a, and the received optical signal (monitor light) is converted into a current. And sends it to the drive LSI3.
- the light monitoring element 2 is not limited to the force disposed immediately behind the light emitting element 1.
- the light receiving surface 2a may be arranged perpendicular to the optical axis of the optical signal in consideration of the spread of the beam of the optical signal output backward from the light emitting element 1. Further, the light receiving surface 2a of the optical monitor element 2 may be arranged in parallel with the heat dissipation board 41 so as to receive an optical signal in a region where the beam is widened. The monitor light may be incident from the side surface of the optical monitor element 2.
- FIGS. 1 ( a ) and 2 the line having the above-mentioned standing structure will be described with reference to FIGS. 1 ( a ) and 2.
- an L-shaped upper ground line 68 larger than the outer shape of the driving LSI 3 is formed on the upper surface of the insulating layer 7.
- a lower ground line 65a is formed in the same L-shape as the upper ground line 68.
- the upper ground line 68 is formed with cuts 68a, 68b, 68c at locations intersecting a high-speed signal line to be described later, and a force that avoids contact with the high-speed signal line.
- Notches corresponding to the notches 68a, 68b, 68c are not formed, but are formed in a continuous L-shape.
- the upper ground line 68 separated by the notch 68a is used to connect the insulating layer 7 to the optical waveguide. It is connected by a plurality of vias 67 penetrating vertically so as to avoid interference with 71. With this structure, a stable ground can be maintained between the upper ground line 68 and the lower ground line 65a. As described later, the upper ground line 68 is connected to the driving LSI 3.
- the heat generated by the driving LSI 3 is generated by the upper ground line 68, the plurality of vias 67 and the lower ground line 65a.
- the light is transmitted to the heat dissipation board 41 through the line 65a and is radiated by the heat dissipation board 41.
- a high-speed signal line 63 a is formed separately from the upper ground line 68.
- a high-speed signal line 63b is formed separately from the upper ground line 68 at a cut 68b of the upper ground line 68.
- a DC line 61 is formed separately from the upper ground line 68 at a cut 68c of the upper ground line 68.
- the high-speed signal lines 63a and 63b supply a driving signal to the driving LSI 3
- the high-speed signal line 63c supplies a driving signal from the driving LSI 3 to the light emitting element 1.
- the DC line 61 is for supplying a control signal of the optical monitoring element 2 to the driving LSI 3.
- the line having the three-dimensional structure has a coplanar line structure including the high-speed signal lines 63a, 63b, 63c, 61 and the ground line 68 on the same surface on the upper surface of the insulating layer 7,
- a coplanar line structure including the high-speed signal line 62, the DC line 60, and the ground lines 65a, 65b, 65c on the same surface is formed on 42, and these coplanar line structures are connected in the thickness direction of the insulating layer to form a three-dimensional structure.
- the ground terminal of the drive LSI 3 is connected to the upper ground line 68 by a bump 66, and the signal input terminal of the drive LSI 3 is connected to the high-speed signal lines 63a and 63b by a bump 66.
- a signal output terminal of the driving LSI 3 is connected to the high-speed signal line 63c by a bump 66, and a control signal input terminal of the driving LSI 3 is connected to the DC line 61 by a bump 66.
- the driving LSI 3 is mounted on the insulating layer 7.
- a high-speed signal line 62, a DC line 60, and ground lines 65b and 65c are formed in a region where the light emitting element 1 and the light monitoring element 2 are mounted.
- two vias 69 and 75 are formed vertically penetrating so as to avoid interference with the optical waveguide 71, and the via 69 connects the high-speed signal line 62 and the high-speed signal line 63c. connection The via 75 connects the DC line 61 to the DC line 60.
- the optical monitor element 2 is mounted on the heat radiation board 41 with its ground terminal connected to the ground line 65c and its control signal output terminal connected to the DC line 60 by bumps.
- the light emitting element 1 is mounted on the heat dissipation board 41 with its ground terminal connected to the ground line 65b and its control signal input terminal connected to the high-speed signal line 62 by bumps.
- the drive LSI has a power supply line (not shown) for power supply connected thereto.
- the high-speed signal lines 62, 63a, 63b, and 63c have characteristics that enable transmission of electric signals of several GbitZs—several lOGbitZs in practice.
- the coplanar line structure formed separately in the thickness direction of the insulating layer is connected by the via 69, but the structure connecting the coplanar line structure in the thickness direction of the insulating layer is limited to the via 69. is not.
- a high-speed signal line 76 is formed on the cut end face of the insulating layer 7, and the high-speed signal line 76 is used as a high-speed signal line 63 (63a) having a coplanar line structure. , 63b, 63c) and the high-speed signal line 62 may be connected.
- the steep end face of the insulating layer 7 may be formed obliquely, and the high-speed signal line 76 may be formed on this slope as shown by a broken line.
- the high-speed signal lines 63 and 62 may be connected using wires 77.
- wires 77 In this case, in order to transmit a signal at high speed, it is necessary to make the length of the wire 77 as short as possible.
- the connection structure shown in Fig. 3 (a)-(d) is suitable for connecting DC lines 60 and 61.
- the line in the photoelectric composite module 4 described above has a coplanar line structure including the signal line and the ground line on the same surface on the insulating layers 7 and 42, but is not limited thereto. ! / ,.
- a microstrip line structure in which the signal line and the ground line forming the respective coplanar line structures are sandwiched by an insulating layer may be formed as a three-dimensional structure line in which the microstrip signal lines are connected in the thickness direction of the insulating layer. Things.
- the driving LSI 3 When an electric logic signal of a specified voltage and a power supply voltage are supplied to the driving LSI 3 from the outside, the driving LSI 3 has a necessary amplitude to drive the light emitting element 1, and a current corresponding to the external electric signal is output from the driving LSI 3.
- the light emitting element 1 emits an optical signal based on the current.
- the optical signal from the light emitting element 1 enters the optical waveguide 71, is transmitted to the optical fiber 51 through the optical waveguide 71, and is transmitted to a necessary place by the optical fiber 51.
- the light monitor element 2 when the light monitor element 2 receives light output from the opposite side of the light emitting element 1 as monitor light, it outputs a current corresponding to the monitor light.
- This current flows to the driving LSI 3 via the DC line 60, the via 75, and the DC line 61.
- the driving LSI 3 adjusts the current amplitude according to the current from the optical monitoring element 2 to realize the APC function.
- FIG. 1 A specific example of the photoelectric composite module 4a shown in Fig. 1 is shown.
- a distributed feedback type edge emitting laser having an oscillation wavelength of 1310 nm was used as the light emitting element 1, and a surface type photodiode was used as the optical monitoring element 2.
- These optical elements were mounted on the photoelectric composite module 4a by flip-chip mounting.
- a polymer resin having an optical waveguide loss of 0.5 dBZcm, a relative dielectric constant of 3, and a dielectric loss tangent of 0.005 was used for the insulating layer 7 of the photoelectric composite module 4a.
- the high-speed transmission line was fabricated so that the impedance resistance was 50 ⁇ .
- the current supplied to the light emitting element 1 from the outside is controlled by the electric signal of the differential input of lOGbitZs.
- the wiring length between the driving LSI 3 and the light emitting element 1 was 1 mm or less due to proximity shading, and an optical output waveform without deterioration in eye opening characteristics was obtained.
- the coupling loss between the light-emitting element 1 and the optical monitor element 2 was 0.5 dB, and the output current of the optical monitor element 2 at this time was 0.5 mA.
- the photoelectric composite module 4a includes an optical system including the optical monitoring element 2, the light emitting element 1, the optical waveguide 71, the optical fiber 51, and the like, and the drive LSI 3 and the light emitting element 1 It is possible to arrange the high-speed signal lines 62 and 63 (63a, 63b, 63c) three-dimensionally. As a result, the coupling loss can be suppressed by arranging the coupling system close to each other, and the driving LSI 3 and the light emitting element 1 can be arranged close to each other, so that the functions of the high-speed wiring and the optical waveguide can be satisfied at the same time.
- FIG. 4 shows photoelectric It is a schematic top view of a composite module.
- This embodiment is different from the first embodiment in that an electric input is input from the rear of the photoelectric composite module 4b. That is, the high-speed signal line 63a for performing the electric input is provided at the rear of the photoelectric composite module 4b, so that the electric signal is directly input to the high-speed signal line 63a.
- the DC line 60 is provided below the optical waveguide 71 in the drawing.
- a high-speed signal line 63a is inserted into a plug-in type module and an electric signal is input to the high-speed signal line 63a.
- the signal is transmitted to the drive LSI 3 which hardly causes signal degradation such as bonding with a wire.
- Such an embodiment has an advantage that it can be effectively applied to, for example, a plug-in type module.
- FIG. 5 is a configuration diagram of the photoelectric composite module.
- FIG. 5 (a) is a schematic sectional view
- FIG. 5 (b) is a schematic top view.
- the photoelectric composite module 4c of the present embodiment is different from the first and second embodiments in that the driving LSI 3 is disposed on the back side of the light emitting element 1.
- An insulating layer 7 having a built-in optical waveguide 71 is disposed in front of the light-emitting element 1, and an optical signal is optically output through the optical waveguide 71 and the optical fiber 51.
- An insulating layer 7c is arranged behind the light emitting element 1, and an optical waveguide 72 is built in the insulating layer 7c.
- the optical monitoring element 2 is disposed behind the optical waveguide 72. Further, the driving LSI 3 is arranged above the insulating layer 7c.
- the electrical connection and operation of each element are the same as in the first embodiment.
- the light emitting element 1 and the optical monitoring element 2 are optically coupled by direct coupling.
- the optical coupling is performed via the optical waveguide 72.
- the high-speed signal line 63a is drawn behind the photoelectric composite module 4c as in the second embodiment, and has a configuration effective for, for example, a plug-in type module.
- FIG. 6 is a schematic top view of the photoelectric composite module.
- the photoelectric composite module 4d according to the present embodiment It differs from the above embodiments in that the module is a four-channel arrayed module. A total of four light-emitting elements 1 are provided for each channel, and two light-monitoring elements 2 for two channels are provided, each of which monitors the light of two light-emitting elements 1.
- Four optical waveguides 72 similar to those of the third embodiment are provided between each light emitting element 1 and each optical motor element 2.
- the drive LSI 3 is mounted on the insulating layer 7c, and supplies a current amplification signal from one drive LSI 3 to four light emitting elements 1 via the high-speed signal line 63c. It has become.
- the optical waveguide and the electric wiring can be routed independently, so that further optimization is possible.
- the optical waveguide and the electric wiring can be routed independently, so that further optimization is possible.
- a plurality of light emitting elements 1 may be arranged close to each other to form an array.
- the insulating layers 7, 7c have a configuration in which a portion incorporating the optical waveguide 72 and a portion incorporating the optical waveguide 71 are separated from each other, but these insulating layers 7, 7c may be integrated.
- the upper ground line 68 may be formed on the insulating layer 7c as in the third embodiment. Further, in the present embodiment, the number of force channels in the case of four channels can be arbitrarily plural.
- the light emitting element and the optical monitoring element, and the light emitting element and the driving LSI can be arranged close to each other, so that the coupling loss of the optical coupling system is suppressed low. At the same time, it becomes possible to transmit high-speed signals at the lOGbitZs level while minimizing deterioration due to the effects of loss and reflection.
- FIG. 1 (a) is a schematic sectional view of an optoelectronic composite module according to a first embodiment of the present invention
- FIG. 1 (b) is a plan view.
- FIG. 2 is an explanatory diagram showing details of connections between elements of the photoelectric composite module shown in FIG. 1. is there.
- FIG. 3 is a view showing a variation of a connection structure between the light emitting element and the driving LSI of the photoelectric composite module shown in FIG. 1, wherein FIG. 3 (a) is a side view, and FIG. 3 (b) is a view showing FIG. 3) is a side view, FIG. 3 (d) is a side view, and FIG. 3 (d) is a view taken along arrow B-B of FIG. 3 (c).
- FIG. 4 is a schematic plan view of a photoelectric composite module according to a second embodiment of the present invention.
- FIG. 5 (a) is a schematic cross-sectional view of a photoelectric composite module according to a third embodiment of the present invention
- FIG. 5 (b) is a schematic plan view.
- FIG. 6 is a schematic plan view of a photoelectric composite module according to a fourth embodiment of the present invention.
- FIG. 7 (a) is a schematic sectional view of a conventional photoelectric composite module
- FIG. 7 (b) is a schematic plan view.
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Abstract
Description
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JP2005517249A JP4951971B2 (ja) | 2004-01-21 | 2005-01-20 | 光電気複合モジュール |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2006025523A1 (ja) * | 2004-09-02 | 2008-05-08 | 日本電気株式会社 | 光電気複合モジュール |
WO2010038871A1 (ja) * | 2008-10-03 | 2010-04-08 | ソニー株式会社 | 半導体装置 |
WO2010113968A1 (ja) * | 2009-03-30 | 2010-10-07 | 京セラ株式会社 | 光電気配線基板および光モジュール |
JP2014240933A (ja) * | 2013-06-12 | 2014-12-25 | 新光電気工業株式会社 | 光電気混載基板、及び光モジュール |
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JPWO2015050187A1 (ja) * | 2013-10-04 | 2017-03-09 | 技術研究組合光電子融合基盤技術研究所 | 光電気混載基板に設けた光送信機または光送受信機の送信部 |
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