WO2024070674A1 - 光学装置および光トランシーバ - Google Patents
光学装置および光トランシーバ Download PDFInfo
- Publication number
- WO2024070674A1 WO2024070674A1 PCT/JP2023/033251 JP2023033251W WO2024070674A1 WO 2024070674 A1 WO2024070674 A1 WO 2024070674A1 JP 2023033251 W JP2023033251 W JP 2023033251W WO 2024070674 A1 WO2024070674 A1 WO 2024070674A1
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- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- optical transceiver
- optical
- opening
- conductors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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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
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4228—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements
- G02B6/423—Passive alignment, i.e. without a detection of the degree of coupling or the position of the elements using guiding surfaces for the alignment
-
- 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
- G02B6/4266—Thermal aspects, temperature control or temperature monitoring
- G02B6/4268—Cooling
- G02B6/4269—Cooling with heat sinks or radiation fins
-
- 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
- G02B6/4212—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element being a coupling medium interposed therebetween, e.g. epoxy resin, refractive index matching material, index grease, matching liquid or gel
-
- 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
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
- G02B6/4236—Fixing or mounting methods of the aligned elements
- G02B6/4245—Mounting of the 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
- G02B6/4274—Electrical aspects
- G02B6/4284—Electrical aspects of optical modules with disconnectable electrical connectors
-
- 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
- G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
-
- 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
- G02B6/4246—Bidirectionally operating package structures
-
- 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
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
-
- 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
- G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
Definitions
- the present invention relates to an optical device and an optical transceiver.
- Patent Document 1 a small optical transceiver described in Patent Document 1 is known as an optical transceiver used in a network switch device (for example, Patent Document 1).
- a switch ASIC application specific integrated circuit
- multiple optical transceivers are mounted on a board.
- one of the objectives of the present invention is to provide a new and improved optical device and optical transceiver that can more reliably ensure electrical connection between, for example, the substrate of the optical device and the optical transceiver.
- the optical device of the present invention for example, comprises a first substrate having a first surface facing a first direction and intersecting the first direction, an optical transceiver disposed offset in the first direction relative to the first substrate, a socket located between the first substrate and the optical transceiver, the socket having a plurality of connection conductors electrically connecting the conductors of the first substrate and the conductors of the optical transceiver, and an insulator supporting the plurality of connection conductors, and a positioning pin extending in the first direction between the first substrate and the optical transceiver and penetrating the socket, and positioning the first substrate, the optical transceiver, and the socket in a direction intersecting the first direction.
- the optical transceiver may have a second substrate having a plurality of conductors and an insulator, and a first member provided between the first substrate and the second substrate and having a first opening through which the positioning pin is inserted.
- the first opening may pass through the first member
- the positioning pin may pass through the first opening
- the second substrate may be provided with a second opening into which the positioning pin is inserted
- the optical transceiver may be positioned with the positioning pin in the second opening.
- the optical transceiver may have a second member that covers the second substrate on the opposite side of the second substrate from the first member.
- the second member may be provided with a third opening aligned with the second opening in the first direction.
- the optical transceiver may have a coupling that integrates the first member and the second member.
- the optical transceiver may have a heating element provided on the second substrate, and a thermally conductive member interposed between the heating element and the first member or the second member.
- the heat conductive member may be flexible.
- the second substrate may have a second surface facing the socket in a direction opposite to the first direction, and the multiple conductors of the second substrate may form a land grid array on the second surface.
- the multiple conductors of the second substrate may be arranged in a diagonal lattice pattern on the second surface.
- the multiple conductors of the second substrate may be arranged at intervals of 0.6 mm or less on the second surface.
- the optical device may include a plurality of optical transceivers as the optical transceiver.
- the multiple optical transceivers may be arranged along an edge of the first substrate.
- the multiple optical transceivers may be arranged along the four sides of the first substrate, and a semiconductor integrated circuit may be mounted on the first surface at a position farther away from each of the sides than the optical transceivers.
- the multiple connection conductors may be located closer to the semiconductor integrated circuit than the center of the optical transceiver when viewed in the first direction.
- the optical device may include an optical fiber extending from the optical transceiver in the first direction.
- the optical transceiver of the present invention is, for example, an optical transceiver that is applied to an optical device and includes a first substrate having a first surface facing a first direction and intersecting the first direction, an optical transceiver that is offset in the first direction relative to the first substrate, a socket that is located between the first substrate and the optical transceiver and has a plurality of connection conductors that electrically connect the conductors of the first substrate and the conductors of the optical transceiver, and an insulator that supports the plurality of connection conductors, and a positioning pin that extends in the first direction between the first substrate and the optical transceiver and penetrates the socket, and positions the first substrate, the optical transceiver, and the socket in a direction intersecting the first direction, and the optical transceiver is provided with a positioning opening in which the positioning pin is positioned.
- the optical transceiver may have a second substrate having a plurality of conductors and an insulator, and a first member provided between the first substrate and the second substrate and having a first opening through which the positioning pin is inserted.
- the first opening may pass through the first member
- the positioning pin may pass through the first opening
- a second opening may be provided in the second substrate as the positioning opening.
- the optical transceiver may have a second member covering the second substrate on the opposite side of the second substrate from the first member, and the first member, the second member, and the second substrate may form a portion of the outer surface of the optical transceiver.
- the present invention provides an improved and novel optical device and optical transceiver that can, for example, more reliably ensure electrical connection between the substrate of the optical device and the optical transceiver.
- FIG. 1 is an exemplary schematic perspective view of a switch device according to an embodiment.
- FIG. 2 is an exemplary schematic plan view of the switch device according to the embodiment.
- FIG. 3 is an exemplary schematic side view of a portion of the switch device according to the embodiment.
- FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 5A to 5C are exemplary schematic plan views of a part of a switch device according to an embodiment, showing a state before an optical transceiver is placed, a state after the optical transceiver is placed, and a state after the optical transceiver is attached.
- FIG. 6 is an exemplary schematic perspective view of an optical transceiver according to the embodiment.
- FIG. 1 is an exemplary schematic perspective view of a switch device according to an embodiment.
- FIG. 2 is an exemplary schematic plan view of the switch device according to the embodiment.
- FIG. 3 is an exemplary schematic side view of a portion of the switch device according to the embodiment.
- FIG. 4 is a
- FIG. 7 is an exemplary schematic exploded perspective view of the optical transceiver according to the embodiment.
- FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG.
- FIG. 9 is an exemplary schematic plan view of the bottom surface of the optical transceiver according to the embodiment.
- arrow X indicates the X direction
- arrow Y indicates the Y direction
- arrow Z indicates the Z direction.
- the X direction, Y direction, and Z direction intersect with each other and are perpendicular to each other.
- Fig. 1 is a perspective view of a switch device 100 according to an embodiment.
- Fig. 2 is a plan view of the switch device 100.
- Fig. 3 is a side view of a portion of the switch device 100 as viewed in the Y direction as indicated by the arrow III in Fig. 1.
- Fig. 4 is a cross-sectional view taken along the line IV-IV in Fig. 2.
- the switch device 100 is mounted on a motherboard 200. Note that in this embodiment, only one switch device 100 is mounted on the motherboard 200, but multiple switch devices 100 may be mounted on the motherboard 200.
- the motherboard 200 may also be referred to as an integrated board.
- the switch device 100 is an example of an optical device.
- the switch device 100 includes a substrate 10, a switch ASIC 20, a plurality of optical transceivers 30, a heat sink 21 for the switch ASIC 20, a fixing mechanism 40 for fixing the optical transceivers 30 to the substrate 10, and a heat dissipation mechanism 50 for the optical transceivers 30.
- the substrate 10, the fixing mechanism 40, and the heat dissipation mechanism 50 are referred to as a substrate assembly.
- the substrate assembly can be mounted on a motherboard 200.
- the substrate 10 has four sides 10c extending in the X-direction or Y-direction. Also, as shown in FIG. 4, the substrate 10 intersects with the Z-direction and spreads perpendicularly, has a plate-like shape, and has a surface 10a facing the Z-direction and a surface 10b facing the opposite direction of the Z-direction on the opposite side to the surface 10a. Surfaces 10a and 10b intersect with the Z-direction and spread perpendicularly.
- the substrate 10 is, for example, a printed wiring board.
- the Z-direction is an example of a first direction of the substrate 10, and may also be referred to as the thickness direction of the substrate 10.
- the substrate 10 is an example of a first substrate, and surface 10a is an example of a first surface.
- the optical transceivers 30 are arranged along the four sides 10c of the substrate 10.
- Each optical transceiver 30 has a photodiode array as a light receiving unit that receives an optical signal.
- Each light receiving unit receives an optical signal transmitted through an optical fiber 32 and outputs an electrical signal corresponding to the optical signal.
- the electrical signal is input to the switch ASIC 20 via a socket 43 (see FIG. 4) and a conductor provided on the substrate 10.
- the optical transceiver 30 also has electronic components that operate when an electrical signal corresponding to the received optical signal is output.
- each optical transceiver 30 has, for example, a VCSEL array (VCSEL: vertical cavity surface emitting laser) as a light emitting unit that outputs an optical signal.
- VCSEL vertical cavity surface emitting laser
- Each light emitting unit receives an electrical signal from the switch ASIC 20 via conductors provided in the board 10 and socket 43, and outputs an optical signal corresponding to the electrical signal.
- the optical signal is coupled to the optical fiber 32 and transmitted by the optical fiber 32.
- the optical transceiver 30 also has electronic components that operate when outputting an optical signal corresponding to the received electrical signal.
- the optical transceivers 30 are fixed to the substrate 10 by fixing mechanisms 40 provided on each side 10c of the substrate 10.
- a fixing mechanism 40 is provided on each of the four sides 10c, i.e., four fixing mechanisms 40 in total, and are shared by the optical transceivers 30 (eight in this embodiment, as an example) arranged along each side 10c.
- the fixing mechanism 40 is shared by the optical transceivers 30, which has the advantage that the attachment structure of the fixing mechanism 40 to the substrate 10 can be simplified and the number of parts can be reduced compared to when the optical transceivers 30 are fixed to the substrate 10 by their own fixing mechanisms, thereby reducing the effort and cost required to manufacture the switch device 100.
- the switch ASIC 20 is mounted on the substrate 10 at a position farther away from each side 10c of the substrate 10 than the optical transceivers 30 (approximately the center of the substrate 10 in this embodiment). As shown in Figure 4, the switch ASIC 20 is mounted, for example, by flip-chip mounting on the surface 10a. The switch ASIC 20 controls the operation of each optical transceiver 30.
- the switch ASIC 20 is an example of a semiconductor integrated circuit.
- the heat sink 21 is provided so as to contact the side opposite the substrate 10 with respect to the switch ASIC 20.
- the heat sink 21 is in contact with the top surface of the switch ASIC 20, and has a base 21a and a plurality of arrayed, pin-shaped fins 21b protruding from the base 21a in the Z direction.
- the heat sink 21 is also made of a material with relatively high thermal conductivity, such as an aluminum-based metal material. With this configuration, the heat generated in the switch ASIC 20 is transferred in the Z direction in the heat sink 21, and is transferred to the surrounding gas by heat exchange between the fins 21b and the gas surrounding the fins 21b, i.e., released.
- the fixing mechanism 40 has an upper member 41, an intermediate member 42, and a socket 43. These components of the fixing mechanism 40 are integrated by fasteners 46 such as screws. Among the components of the fixing mechanism 40, the intermediate member 42 and the socket 43 are shared by all the optical transceivers 30 in the group of multiple optical transceivers 30 along each side 10c of the board 10. As shown in Figure 4, the fixing mechanism 40 fixes the optical transceivers 30 located near the side 10c of the board 10 to the board 10 in a state in which they are sandwiched in the thickness direction of the board 10.
- the fixing mechanism 40 removably fixes the optical transceiver 30 to the board 10.
- the components of the fixing mechanism 40 include components that are fixed to the board 10 and components that are detachable from the board 10.
- the intermediate member 42 and the socket 43 are fixed to the board 10, and the upper member 41 is configured to be detachable from the intermediate member 42, i.e., the board 10.
- the upper member 41 is attached to the intermediate member 42 by a fastener 46 configured as a removable screw.
- the upper member 41 is not shared by all of the multiple optical transceivers 30 along the side 10c, but is shared only by two optical transceivers 30 adjacent to each other along the side 10c. This has the advantage that, for example, it is possible to simultaneously facilitate removal of the optical transceivers 30 individually and share parts, and that the positioning accuracy can be improved by reducing the effects of bending of the fixing mechanism 40 and manufacturing variations in the components of the fixing mechanism 40 and the optical transceivers 30.
- this configuration is just one example, and the upper member 41 may be shared by all of the multiple optical transceivers 30 along the side 10c.
- the socket 43, the intermediate member 42, and the upper member 41 are placed on the substrate 10 in this order.
- the optical transceiver 30 is offset in the Z direction relative to the substrate 10.
- the upper member 41 presses the body 31 of the optical transceiver 30 in the opposite direction to the Z direction, toward the board 10 and the socket 43. As shown in Figures 4 and 5, the upper member 41 has an opening 41a as a notch that penetrates the upper member 41 in the Z direction. A part of the body 31 is housed in the opening 41a.
- the intermediate member 42 has an opening 42a that is a through hole extending in the Z direction.
- the side of the opening 42a has the function of roughly guiding the body 31 of the optical transceiver 30 in the X and Y directions when it is attached.
- the socket 43 is placed on the surface 10a of the substrate 10 and supports the body 31 of the optical transceiver 30.
- the socket 43 is provided with an electrical interface 43a and an opening 43b. Of the socket 43, at least the electrical interface 43a is located between the substrate 10 and the optical transceiver 30.
- the conductors of the electrical interface 43a are electrically connected to the conductors of the electrical interface provided on the substrate 33 of the optical transceiver 30.
- the opening 43b exposes the bottom surface 31a4 of the body 31 of the optical transceiver 30 in the opposite direction to the Z direction.
- the opening 43b is provided, for example, as a through hole or a notch that penetrates the socket 43 in the Z direction.
- the heat dissipation mechanism 50 dissipates heat generated in the optical transceiver 30.
- the heat dissipation mechanism 50 has a thermally conductive member 51 and a heat sink 52.
- the thermally conductive member 51 may be configured to function as part of the fixing mechanism 40.
- the heat conducting member 51 is aligned with the optical transceiver 30 in the Z direction.
- the heat conducting member 51 has a portion 51a accommodated in the opening 43b of the socket 43 and the opening 10d of the board 10, and a portion 51b located on the opposite side of the portion 51a from the optical transceiver 30.
- the heat conducting member 51 is thermally connected to the lower surface 31a4 of the optical transceiver 30, and transfers heat generated in the optical transceiver 30.
- the heat conducting member 51 is made of a material with a relatively high thermal conductivity, such as an aluminum-based metal material.
- the heat conducting member 51 is fixed to the board 10 or the fixing mechanism 40 by a fastener such as a screw, adhesive, or the like.
- the portion 51a is adjacent to the lower surface 31a4 via a flexible heat dissipation material 47, and is thermally connected to the lower surface 31a4.
- the heat dissipation material 47 is made of a synthetic resin material that has a relatively high thermal conductivity and is flexible and malleable, for example, a thermosetting synthetic resin material with high heat dissipation properties.
- the provision of the heat dissipation material 47 has the advantage of preventing a decrease in the efficiency of heat conduction from the lower surface 31a4 to the portion 51a due to a gap between the lower surface 31a4 and the portion 51a caused by manufacturing variations or differences in the thermal expansion coefficient between parts, and preventing excessive pressure from being generated between the lower surface 31a4 and the portion 51a.
- Part 51b is provided integrally with part 51a and is thermally connected to part 51a. Part 51b also extends from part 51a in the opposite direction to the Z direction, i.e., in the thickness direction of the substrate 10, and also extends in a direction intersecting the Z direction on the opposite side of the substrate 10 from the optical transceiver 30.
- the heat conductive member 51 contacts the heat sink 52 on the side opposite the bottom surface 31a4 of the substrate 10, and is thermally connected to the heat sink 52.
- the heat sink 52 has a base 52a and a plurality of arrayed, pin-shaped fins 52b protruding from the base 52a in the opposite Z direction.
- the heat sink 52 is made of a material with a relatively high thermal conductivity, such as an aluminum-based metal material.
- the heat sink 52 is fixed to the heat conductive member 51 by a fastener such as a screw, soldering, adhesive, or the like.
- the heat conductive member 51 and the heat sink 52 may be integrated into a single member.
- the heat sink 52 may also be called a heat dissipation member.
- the switch device 100 may also be provided with an electric fan, and configured so that the airflow generated by the operation of the electric fan acts on the heat sink 52.
- the bottom surface 31a4 and the portion 51a are located on the opposite side of the electrical interface 43a from the switch ASIC 20.
- the electrical interface 43a is located closer to the switch ASIC 20 than the center line C extending in the Z direction of the body 31 of the optical transceiver 30.
- This arrangement has the advantages of, for example, making it easier to ensure the required transmission characteristics of the electrical signal by shortening the length of the conductor between the electrical interface 43a and the switch ASIC 20, and making it easier to obtain the required heat dissipation performance from the optical transceiver 30 by avoiding interference between the heat conductive member 51 and the conductor.
- Fig. 6 is a perspective view of the optical transceiver 30.
- Fig. 7 is an exploded perspective view of the optical transceiver 30.
- Fig. 8 is a cross-sectional view taken along line VIII-VIII in Fig. 5.
- Figs. 6 to 8 show directions (X direction to Z direction) in which the optical transceiver 30 (S2) shown in Fig. 5 is installed.
- the optical transceiver 30 comprises a body 31, a board 33, a connector 34, a positioning pin 35, and a fastener 36.
- the optical fiber 32 extends in the Z direction from the optical transceiver 30.
- the first member 31A, the board 33, and the second member 31B that constitute the body 31 are arranged in this order in the Z direction and are integrated by a fastener 36.
- the fastener 36 is, for example, a screw.
- the fastener 36 is an example of a coupling.
- the body 31 can also be referred to as a housing.
- the peripheral portion 33e of the substrate 33 is exposed between the first member 31A and the second member 31B that constitute the body 31, and together with the first member 31A and the second member 31B, constitutes part of the outer surface of the optical transceiver 30. With this configuration, it may be possible to make the size of the optical transceiver 30 smaller than if the substrate 33 were housed within the body 31.
- the lens assemblies 37 are attached to the connector 34 adjacent to each other in the opposite direction of the Z direction.
- the lens assembly 37 has a holder 37a and a lens array, such as a collimator lens array or a focusing lens array, attached to the holder 37a.
- the positioning pin 35 positions the connector 34 and the lens assembly 37 in a direction intersecting the Z direction.
- the second member 31B has a generally rectangular parallelepiped shape.
- An opening 31b3 is provided in the middle of the second member 31B in the X direction.
- the opening 31b3 penetrates the second member 31B in the Z direction.
- the opening 31b3 of the second member 31B houses the connector 34 and at least a part of the lens assembly 37.
- the second member 31B has through holes 31b1 that penetrate in the Z direction at multiple locations.
- the substrate 33 has through holes 33c1 that penetrate in the Z direction and are aligned with the through holes 31b1 in the Z direction, and the first member 31A has a female screw hole 31a1.
- the fixing device 36 penetrates through the through holes 31b1 and 33c1 and is fixed to the female screw hole 31a1.
- the substrate 33 is, for example, a printed wiring board.
- the substrate 33 has a substantially constant thickness in the Z direction, and intersects with and is perpendicular to the Z direction.
- the substrate 33 has a surface 33a and a surface 33b.
- Surface 33a faces the Z direction and intersects with and is perpendicular to the Z direction.
- An optical element 301, electronic components 302, etc. are mounted on surface 33a.
- the optical element 301 is, for example, a light receiving unit such as a photodiode array, or a light emitting unit such as a VCSEL array.
- the electronic component 302 is, for example, an IC that operates in response to the light receiving unit or light emitting unit.
- Surface 33b faces in the opposite direction to the Z direction, intersecting and perpendicular to the Z direction.
- Surface 33b faces electrical interface 43a of socket 43.
- Board 33 is an example of a second board, and surface 33b is an example of a second surface.
- a recess recessed in the Z direction is provided on the end of the second member 31B on the opposite side in the Z direction, in a portion facing the mounting area of the optical element 301 and the electronic component 302.
- a storage chamber R for components such as the optical element 301 and the electronic component 302 is provided between the substrate 33 and the second member 31B.
- a recess may also be provided in the portion of the substrate 33 facing the second member 31B.
- the electronic component 302 generates heat in response to operation.
- the electronic component 302 is an example of a heat generating body.
- two heat dissipation paths are provided to dissipate the heat generated by the electronic component 302.
- One of the heat dissipation paths is a path that dissipates heat from the first member 31A described above to the heat conduction member 51 of the heat dissipation mechanism 50.
- the heat generated in the electronic component 302 is transferred from the surface 33b of the substrate 33 to the first member 31A.
- a heat conduction member such as a via or inlay at ground potential, that transfers the heat generated in the electronic component 302 mounted on the surface 33a to the surface 33b may be provided in the substrate 33.
- the heat conduction member is made of a material having a higher thermal conductivity than the insulator of the substrate 33, such as a copper-based metal material.
- the first member 31A is made of a material having a relatively high thermal conductivity, such as an aluminum-based metal material, that has a higher thermal conductivity than the insulator of the substrate 33.
- the other heat dissipation path is a path for dissipating heat from electronic component 302 to second member 31B via heat dissipation material 303 provided between electronic component 302 and second member 31B.
- Heat dissipation material 303 is made of a heat conductive sheet (e.g., a graphite sheet) that has a relatively high thermal conductivity and is flexible and malleable, or a synthetic material whose main component is silicone.
- Heat dissipation material 303 is an example of a heat conductive member.
- Second member 31B is also made of a material that has a relatively high thermal conductivity, such as an aluminum-based metal material, and has a higher thermal conductivity than the insulator of substrate 33.
- the heat transferred to the first member 31A or the second member 31B via these heat dissipation paths is dissipated outside the switch device 100 via the heat dissipation mechanism 50, the fixing mechanism 40, etc.
- the first member 31A has a substantially constant thickness in the Z direction, and intersects with and is perpendicular to the Z direction.
- the first member 31A has an opening 31a3 that penetrates in the Z direction at the middle part in the X direction.
- connection conductors 43d each penetrate the socket 43 in the Z direction at the electrical interface 43a, and electrically connect the conductors of the board 33 and the board 10.
- the connection conductors 43d can be configured, for example, as contact terminals having elastically expandable pins extending in the Z direction.
- the conductors of the electronic component 302 are electrically connected to the conductors of the switch ASIC 20 via the conductors of the board 33 of the optical transceiver 30, the connection conductors 43d, and the conductors of the board 10.
- the socket 43 With the electrical interface 43a, it is possible to more easily construct a configuration that ensures the required positioning accuracy between the conductors of the board 33 of the detachable optical transceiver 30 and the conductors of the board 10, compared to, for example, providing an electrical interface directly on the board 10.
- connection conductor 43d as a contact terminal with an expandable pin, it is easier to ensure the required surface pressure and required contact area between the conductors of the board 33 and the connection conductor 43d, and between the conductors of the board 10 and the connection conductor 43d, and it is possible to suppress an increase in contact resistance.
- Figure 9 is a plan view of the underside 31a4 of the optical transceiver 30, which is located in the opposite direction to the Z direction. Figure 9 also shows the directions (X direction to Z direction) when the optical transceiver 30 (S2) shown in Figure 5 is installed.
- the electrical interface 33d has a number of lands 33d1 and an insulator 33d2.
- the lands 33d1 each come into contact with the connection conductors 43d of the socket 43 in the Z direction and are electrically connected.
- the lands 33d1 are an example of a conductor.
- the lands 33d1 form a land grid array.
- the rows of the lands 33d1, in which the lands 33d1 are arranged at regular intervals in the Y direction, are arranged at approximately regular intervals in the X direction.
- the positions of two rows of lands 33d1 adjacent to each other in the X direction are shifted by, for example, approximately half the interval between the lands 33d1 in the Y direction. That is, in the land grid array, the lands 33d1 are arranged in a diagonal lattice pattern.
- This arrangement allows more lands 33d1 to be arranged more densely, and therefore the optical transceiver 30 can be made smaller.
- arranging the lands 33d1 as a land grid array is preferable when the interval between the lands 33d1 is 0.6 mm or less, and more preferable when the interval between the lands 33d1 is 0.3 mm or less.
- the multiple connection conductors 43d that are in contact with and electrically connected to the multiple lands 33d1 also form a land grid array, similar to the multiple lands 33d1.
- the substrate 10, socket 43, and substrate 33 are positioned in a direction intersecting the Z direction by a positioning pin 11 extending in the Z direction.
- the substrate 10 has a through hole 10e penetrating in the Z direction.
- the socket 43 has a through hole 43e penetrating in the Z direction.
- the substrate 33 has a through hole 33c2 penetrating in the Z direction.
- the through holes 10e, 43e, and 33c2 are aligned in the Z direction and extend in the Z direction with approximately the same diameter.
- the first member 31A also has a through hole 31a2 penetrating in the Z direction, which is aligned in the Z direction with the through holes 10e, 43e, and 33c2.
- the positioning pin 11 passes through the through hole 43e and the through hole 31a2 and extends between the through hole 10e and the through hole 33c2.
- the fit between the positioning pin 11 and the through holes 10e, 43e, 31a2, and 33c2 is set to be, for example, an intermediate fit or a clearance fit.
- the substrate 10, the socket 43, the first member 31A, and the substrate 33 are positioned in a direction intersecting the Z direction by the positioning pin 11.
- the through hole 31a2 of the first member 31A does not necessarily need to be positioned with the positioning pin 11.
- the through hole 31a2 may be a through hole that has a larger clearance with the positioning pin 11, in other words, a notch that is not positioned with the positioning pin 11.
- the through hole 31a2 is an example of a first opening
- the through hole 33c2 is an example of a second opening.
- the through holes 10e, 43e, 31a2, and 33c2 are also examples of positioning openings.
- the second member 31B has a bottomed hole 31b2 extending in the Z direction from a position where the second member 31B contacts the substrate 33.
- the bottomed hole 31b2 is aligned with the through holes 31a2 and 33c2 in the Z direction and extends in the Z direction with approximately the same diameter as the through holes 31a2 and 33c2.
- the first member 31A, the substrate 33, and the second member 31B can be positioned in a direction intersecting the Z direction by using a positioning pin that passes through the through holes 31a2 and 33c2 and is inserted into the bottomed hole 31b2.
- the bottomed hole 31b2 is an example of a third opening. Note that the third opening is not limited to the bottomed hole 31b2 and may be a through hole.
- the positioning pin 11 and the through holes 10e, 43e, 31a2, and 33c2 through which the positioning pin 11 passes are provided at multiple locations spaced apart from each other in a direction intersecting the Z direction. Then, in a plan view seen in the Z direction, the electrical interfaces 43a and 33d, i.e., the multiple connection conductors 43d and the multiple lands 33d1, are provided at positions between the multiple locations. This allows the multiple connection conductors 43d and the multiple lands 33d1 to be positioned with even greater precision.
- the optical transceiver and the positioning pin may be positioned in a portion of the optical transceiver other than the second substrate, for example, in the first opening.
- the peripheral portion of the second substrate of the optical transceiver is exposed as part of the outer surface of the optical transceiver, but this is not limited thereto, and the second substrate may be housed within the body (housing) of the optical transceiver, and the peripheral portion may not be exposed to the outer surface.
- the present invention can be used in optical devices and optical transceivers.
- 10 ...Substrate (first substrate) 10a... surface (first surface) 10b: surface 10c: side 10d: opening 10e: through hole (positioning opening) 11: Positioning pin 20: Switch ASIC (semiconductor integrated circuit) 21...heat sink 21a...base 21b...fins 30...optical transceiver 31...body 31A...first member 31B...second member 31a1...female thread hole 31a2...through hole (first opening, positioning opening) 31a3: Opening 31a4: Lower surface 31b1: Through hole 31b2: Bottomed hole (third opening) 31b3...opening 32...optical fiber 33...substrate (second substrate) 33a... surface 33b...
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Abstract
Description
[スイッチ装置]
図1は、実施形態のスイッチ装置100の斜視図である。図2は、スイッチ装置100の平面図である。図3は、図1の矢印IIIにおいてY方向に見た場合の、スイッチ装置100の一部の側面図である。また、図4は、図2のIV-IV断面図である。
図6は、光トランシーバ30の斜視図である。図7は、光トランシーバ30の分解斜視図である。また、図8は、図5のVIII-VIII断面図である。図6~8には、図5に示される光トランシーバ30(S2)が装着された状態における方向(X方向~Z方向)が示されている。
10a…面(第一面)
10b…面
10c…辺
10d…開口
10e…貫通孔(位置決め開口)
11…位置決めピン
20…スイッチASIC(半導体集積回路)
21…ヒートシンク
21a…ベース
21b…フィン
30…光トランシーバ
31…ボディ
31A…第一部材
31B…第二部材
31a1…雌ねじ孔
31a2…貫通孔(第一開口、位置決め開口)
31a3…開口
31a4…下面
31b1…貫通孔
31b2…有底孔(第三開口)
31b3…開口
32…光ファイバ
33…基板(第二基板)
33a…面
33b…面(第二面)
33c1…貫通孔
33c2…貫通孔(第二開口、位置決め開口)
33d…電気インタフェース
33d1…ランド(導体)
33d2…絶縁体
33e…周縁部
34…コネクタ
35…位置決めピン
36…固定具(結合具)
37…レンズアセンブリ
37a…ホルダ
40…固定機構
41…上側部材
41a…開口
42…中間部材
42a…開口
43…ソケット
43a…電気インタフェース
43b…開口
43c…絶縁体
43d…接続導体
43e…貫通孔(位置決め開口)
46…固定具
47…放熱材
50…放熱機構
51…熱伝導部材
51a…部位
51b…部位
52…ヒートシンク
52a…ベース
52b…フィン
100…スイッチ装置(光学装置)
200…マザーボード
301…光学素子
302…電子部品(発熱体)
303…放熱材(熱伝導部材)
C…中心線
R…収容室
X…方向
Y…方向
Z…方向(第一方向)
Claims (20)
- 第一方向を向いた第一面を有し前記第一方向と交差した第一基板と、
前記第一基板に対して前記第一方向にずれて設けられた光トランシーバと、
前記第一基板と前記光トランシーバとの間に位置し、前記第一基板の導体と前記光トランシーバの導体とを電気的に接続する複数の接続導体と、当該複数の接続導体を支持する絶縁体と、を有したソケットと、
前記第一基板と前記光トランシーバとの間で前記第一方向に延びて前記ソケットを貫通し、前記第一基板、前記光トランシーバ、および前記ソケットを前記第一方向と交差した方向に位置決めする位置決めピンと、
を備えた、光学装置。 - 前記光トランシーバは、
複数の導体と、絶縁体と、を有した第二基板と、
前記第一基板と前記第二基板との間に設けられ、前記位置決めピンが挿入される第一開口が設けられた、第一部材と、
を有した、請求項1に記載の光学装置。 - 前記第一開口は、前記第一部材を貫通し、
前記位置決めピンは、前記第一開口を貫通し、
前記第二基板に、前記位置決めピンが挿入される第二開口が設けられ、
前記光トランシーバは、前記第二開口において前記位置決めピンと位置決めされた、請求項2に記載の光学装置。 - 前記光トランシーバは、前記第二基板に対して前記第一部材とは反対側で前記第二基板を覆う第二部材を有した、請求項3に記載の光学装置。
- 前記第二部材に、前記第二開口と前記第一方向に並んだ第三開口が設けられた、請求項4に記載の光学装置。
- 前記光トランシーバは、前記第一部材と前記第二部材とを一体化する結合具を有した、請求項4または5に記載の光学装置。
- 前記光トランシーバは、
前記第二基板に設けられた発熱体と、
前記発熱体と前記第一部材または前記第二部材との間に介在した熱伝導部材と、を有した、請求項4に記載の光学装置。 - 前記熱伝導部材は、可撓性を有した、請求項7に記載の光学装置。
- 前記第二基板は、前記第一方向の反対方向を向き前記ソケットと面した第二面を有し、
前記第二面において、前記第二基板の複数の導体は、ランドグリッドアレイを構成した、請求項2に記載の光学装置。 - 前記第二面において、前記第二基板の複数の導体は、斜方格子状に配置された、請求項9に記載の光学装置。
- 前記第二面において、前記第二基板の複数の導体は、0.6[mm]以下の間隔で配置された、請求項9または10に記載の光学装置。
- 前記光トランシーバとして複数の光トランシーバを備えた、請求項1または2に記載の光学装置。
- 前記複数の光トランシーバは、前記第一基板の辺に沿って配置された、請求項12に記載の光学装置。
- 前記複数の光トランシーバは、前記第一基板の四つの辺に沿って配置され、
前記第一面の、前記光トランシーバよりも前記辺のそれぞれから離れた位置に、半導体集積回路が実装された、請求項13に記載の光学装置。 - 前記複数の接続導体は、前記第一方向に見た場合に、前記光トランシーバの中心より前記半導体集積回路に近い位置に設けられた、請求項14に記載の光学装置。
- 前記光トランシーバから前記第一方向に延びた光ファイバを備えた、請求項1~3のうちいずれか一つに記載の光学装置。
- 第一方向を向いた第一面を有し前記第一方向と交差した第一基板と、
前記第一基板に対して前記第一方向にずれて設けられた光トランシーバと、
前記第一基板と前記光トランシーバとの間に位置し、前記第一基板の導体と前記光トランシーバの導体とを電気的に接続する複数の接続導体と、当該複数の接続導体を支持する絶縁体と、を有したソケットと、
前記第一基板と前記光トランシーバとの間で前記第一方向に延びて前記ソケットを貫通し、前記第一基板、前記光トランシーバ、および前記ソケットを前記第一方向と交差した方向に位置決めする位置決めピンと、
を備えた、光学装置に適用される、前記光トランシーバであって、
前記位置決めピンが位置決めされる位置決め開口が設けられた、光トランシーバ。 - 前記光トランシーバは、
複数の導体と、絶縁体と、を有した第二基板と、
前記第一基板と前記第二基板との間に設けられ、前記位置決めピンが挿入される第一開口が設けられた、第一部材と、
を有した、請求項17に記載の光トランシーバ。 - 前記第一開口は、前記第一部材を貫通し、
前記位置決めピンは、前記第一開口を貫通し、
前記第二基板に、前記位置決め開口として第二開口が設けられた、請求項18に記載の光トランシーバ。 - 前記第二基板に対して前記第一部材とは反対側で前記第二基板を覆う第二部材を有し、
前記第一部材、前記第二部材、および前記第二基板によって、前記光トランシーバの外面の一部が構成された、請求項18または19に記載の光トランシーバ。
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| CN202380061106.XA CN119678082A (zh) | 2022-09-30 | 2023-09-12 | 光学装置以及光收发器 |
| JP2024550038A JPWO2024070674A1 (ja) | 2022-09-30 | 2023-09-12 | |
| US19/061,282 US20250189735A1 (en) | 2022-09-30 | 2025-02-24 | Optical device and optical transceiver |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006128315A (ja) * | 2004-10-27 | 2006-05-18 | Sony Corp | 半導体装置の放熱構造および放熱方法、並びにそれを利用した電子機器 |
| JP2006201500A (ja) * | 2005-01-20 | 2006-08-03 | Sony Corp | 半導体集積回路およびそれを用いた電子機器 |
| JP2020027147A (ja) * | 2018-08-10 | 2020-02-20 | 国立研究開発法人情報通信研究機構 | 小型光トランシーバ |
| JP2020511788A (ja) * | 2017-03-03 | 2020-04-16 | エイアー テスト システムズ | 電子試験器 |
| WO2022061160A1 (en) * | 2020-09-18 | 2022-03-24 | Nubis Communications Inc. | Data processing systems including optical communication modules |
-
2023
- 2023-09-12 WO PCT/JP2023/033251 patent/WO2024070674A1/ja not_active Ceased
- 2023-09-12 CN CN202380061106.XA patent/CN119678082A/zh active Pending
- 2023-09-12 JP JP2024550038A patent/JPWO2024070674A1/ja active Pending
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006128315A (ja) * | 2004-10-27 | 2006-05-18 | Sony Corp | 半導体装置の放熱構造および放熱方法、並びにそれを利用した電子機器 |
| JP2006201500A (ja) * | 2005-01-20 | 2006-08-03 | Sony Corp | 半導体集積回路およびそれを用いた電子機器 |
| JP2020511788A (ja) * | 2017-03-03 | 2020-04-16 | エイアー テスト システムズ | 電子試験器 |
| JP2020027147A (ja) * | 2018-08-10 | 2020-02-20 | 国立研究開発法人情報通信研究機構 | 小型光トランシーバ |
| WO2022061160A1 (en) * | 2020-09-18 | 2022-03-24 | Nubis Communications Inc. | Data processing systems including optical communication modules |
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| CN119678082A (zh) | 2025-03-21 |
| US20250189735A1 (en) | 2025-06-12 |
| JPWO2024070674A1 (ja) | 2024-04-04 |
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