WO2022153354A1 - 光モジュールの実装構造および光実装ボード - Google Patents
光モジュールの実装構造および光実装ボード Download PDFInfo
- Publication number
- WO2022153354A1 WO2022153354A1 PCT/JP2021/000647 JP2021000647W WO2022153354A1 WO 2022153354 A1 WO2022153354 A1 WO 2022153354A1 JP 2021000647 W JP2021000647 W JP 2021000647W WO 2022153354 A1 WO2022153354 A1 WO 2022153354A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- magnetic
- component
- optical module
- magnetic component
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 574
- 239000000696 magnetic material Substances 0.000 claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 claims description 67
- 239000002184 metal Substances 0.000 claims description 67
- 239000000758 substrate Substances 0.000 claims description 35
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 239000013307 optical fiber Substances 0.000 description 152
- 239000000835 fiber Substances 0.000 description 31
- 230000000694 effects Effects 0.000 description 29
- 239000000463 material Substances 0.000 description 22
- 229920000642 polymer Polymers 0.000 description 18
- 238000003825 pressing Methods 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 239000011347 resin Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000011521 glass Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 229910001172 neodymium magnet Inorganic materials 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000002131 composite material Substances 0.000 description 8
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000005405 multipole Effects 0.000 description 5
- 229920001721 polyimide Polymers 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009429 electrical wiring Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 3
- 230000009291 secondary effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002250 progressing effect Effects 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910004541 SiN Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical compound [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000636 poly(norbornene) polymer Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
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
- G02B6/4256—Details of housings
- G02B6/426—Details of housings mounting, engaging or coupling of the package to a board, a frame or a panel
- G02B6/4261—Packages with mounting structures to be pluggable or detachable, e.g. having latches or rails
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3886—Magnetic means to align ferrule ends
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
-
- 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
-
- 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
Definitions
- the present invention relates to a mounting structure of an optical module mounted on an optical mounting board and an optical mounting board.
- optical interconnection In the realization form of optical interconnection, a method using a pluggable optical transceiver such as an SFP (Small Form Factor Pluggable) is common, but in recent years, in order to meet the needs for further expansion of transmission capacity, electronic components on a board (board) are used.
- SFP Small Form Factor Pluggable
- a mounting form of an optical module called CPO Co-packed optics in which a large number of optical modules are directly mounted in the vicinity of components has been proposed.
- the optical modules are connected to a plurality of optical fibers or polymer waveguides, and the optical fiber / optical waveguide is used as a transmission path for optical light. It is conceivable to connect via a connector.
- a connector for example, as an optical transmission / reception module suitable for CPO, a multi-channel single-mode optical integrated circuit made of silicon photonics, a compound semiconductor, or the like is known, and the optical module and a plurality of optical fibers are optically connected, and further described above.
- the plurality of optical fibers are provided with an MT connector, an MPO connector, etc., which are multi-core optical connectors, at one end, and the optical connectors are connected to each other. In such an application, since it is necessary to mount a plurality of optical modules at a higher density in the board, a space-saving optical mounting form including the optical connector is required.
- an MT connector or an MPO connector based on the MT connector is used as the multi-core optical connector used in the CPO form.
- a resin-molded MT ferrule having a plurality of microholes for accommodating an optical fiber and two guide holes for accommodating / inserting a guide pin is used.
- a plurality of fibers are adhered and fixed to the ferrule, and the guide pins provided on one ferrule are fitted to the other ferrule to connect the optical fibers to each other.
- high-precision positioning between a plurality of optical fibers is collectively realized by the high hole diameter accuracy of each of the optical fiber accommodating hole and the guide pin hole and the high positioning accuracy of the hole.
- the multi-core optical connector of this structure uses spring parts such as clips and coil springs and a mechanical fastening structure for constantly applying the pressing force of these spring parts to the connection end face, it contributes to the above-mentioned CPO application. , There is a limit to miniaturization while maintaining connection workability.
- an MT connector using a clip has a compact configuration consisting of an MT ferrule and a clip, but the width of the clip component is often larger than that of the MT ferrule, which hinders miniaturization.
- connection of the MT connector requires a work space for inserting the clip parts so as to sandwich the two ferrules, and a work space larger than the connector width is required at the time of insertion and removal, and a connection jig is required if necessary. Etc. need to be used. Therefore, when a plurality of optical modules and a plurality of MT connectors are arranged in an array as in the CPO form, the clip width and the space width for inserting and removing the clip are required, so that the plurality of MT connectors are densely arranged. It was not possible to do so, and it was necessary to arrange them sparsely in consideration of the space. The same applies to the use of spring parts such as claws having the same effect as the clip.
- the MPO connector that uses a coil spring instead of the clip can realize a manual push-pull connection by a large number of housing parts around the coil spring and can generate a stable pressing force, while the counter of the coil spring. It is necessary to use a plurality of housing parts and additional adapter parts to hold the pressed state against the force, and the size of these parts is large, and as a result, the size of the MPO connector becomes very large.
- the space for connecting the multi-core optical connector itself and the multi-core optical connector is provided on the substrate. It occupies the upper space, and as a result, there is a problem in mounting the optical module on the board (board) at high density.
- a form in which a polymer waveguide having an optical connector at the end is used instead of the plurality of optical fibers and mounted with an optical module is also being studied.
- the PMT (Polymer Waveguide Connected with MT connector) connector housed in the MT ferrule is applied to the optical connector for the polymer waveguide, and the connection mechanism thereof is the same as that of the MT connector. Therefore, even when the waveguide is used as the transmission line, there is a problem in mounting the optical module on the board (board) at high density due to the space of the connector connection portion as well.
- the present invention has been made to solve the above problems, and a plurality of short optical fibers are arranged on a board in a state of being optically connected to a plurality of short optical fibers having an optical connector or a short optical waveguide having an optical connector. It is an object of the present invention to provide a high-density mounting form of the optical module by saving space required for connecting the optical connector in the mounting form of the optical module.
- the mounting structure of the optical module according to the present invention is, in order, a plurality of optical modules, a first optical waveguide component, a first optical connector, and a second optical connector.
- the first optical connector has a first magnetic component and houses the first optical waveguide component optically connected to the optical module.
- the second optical connector has a second magnetic component, contains the second optical waveguide component, and at least one of the first magnetic component and the second magnetic component contains a hard magnetic material.
- FIG. 1A is a perspective schematic view of an optical mounting board including a mounting structure (before connection) of an optical module according to the first embodiment of the present invention.
- FIG. 1B is a schematic perspective view showing a mounting structure (after connection) of the optical module according to the first embodiment of the present invention.
- FIG. 2A is a schematic perspective view showing an optical connector (before connection) in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 2B is a schematic perspective view showing an optical connector (after connection) in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 3A is a top sectional view showing an optical connector (before connection) in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 3B is a top sectional view showing an optical connector (after connection) in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 4A is a schematic perspective view showing a mounting structure (after connection) of an optical module according to a modified example of the first embodiment of the present invention.
- FIG. 4B is a schematic perspective view showing an optical connector (after connection) in the mounting structure of the optical module according to the modified example of the first embodiment of the present invention.
- FIG. 5A is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5B is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5C is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5D is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5E is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5F is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5G is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5H is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5I is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5J is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 5K is a front sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 6 is a schematic perspective view showing an example of an optical module mounting structure (before connection) according to the first embodiment of the present invention.
- FIG. 7A is a side sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 7B is a side sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 7C is a side sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 7D is a side sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 7E is a side sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 7F is a side sectional view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 8A is a schematic perspective view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 8B is a schematic perspective view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 9 is a schematic perspective view showing an example of an optical connector in the mounting structure of the optical module according to the first embodiment of the present invention.
- FIG. 10A is a schematic perspective view showing a mounting structure (before connection) of the optical module according to the second embodiment of the present invention.
- FIG. 10B is a schematic perspective view showing a mounting structure (after connection) of the optical module according to the second embodiment of the present invention.
- FIG. 11A is a schematic perspective view showing a mounting structure (before connection) of the optical module according to the third embodiment of the present invention.
- FIG. 11B is a schematic perspective view showing a mounting structure (after connection) of the optical module according to the third embodiment of the present invention.
- FIG. 12A is a schematic perspective view showing a mounting structure (before connection) of the optical module according to the fourth embodiment of the present invention.
- FIG. 12B is a schematic perspective view showing a mounting structure (after connection) of the optical module according to the fourth embodiment of the present invention.
- FIG. 13A is a schematic perspective view showing a mounting structure (before connection) of an optical module according to a modified example of the fourth embodiment of the present invention.
- FIG. 13B is a schematic perspective view showing a mounting structure (after connection) of an optical module according to a modified example of the fourth embodiment of the present invention.
- FIG. 14A is a schematic perspective view showing a mounting structure (before connection) of an optical module according to a modified example of the fourth embodiment of the present invention.
- FIG. 14B is a schematic perspective view showing a mounting structure (after connection) of an optical module according to a modified example of the fourth embodiment of the present invention.
- FIG. 15A is a schematic perspective view showing a mounting structure (before connection) of the optical module according to the fifth embodiment of the present invention.
- FIG. 15B is a side sectional view showing the mounting structure (after connection) of the optical module according to the fifth embodiment of the present invention.
- FIG. 16A is a side sectional view showing a mounting structure (after connection) of an optical module according to a modified example of the fifth embodiment of the present invention.
- FIG. 16B is a front sectional view of an example of a ferrule in the mounting structure of the optical module according to the modified example of the fifth embodiment of the present invention.
- FIG. 16C is a front sectional view of an example of a ferrule in the mounting structure of the optical module according to the modified example of the fifth embodiment of the present invention.
- FIG. 17A is a schematic perspective view showing a mounting structure (before connection) of the optical module according to the sixth embodiment of the present invention.
- FIG. 17B is a schematic perspective view showing a mounting structure (after connection) of the optical module according to the sixth embodiment of the present invention.
- FIG. 18 is a schematic perspective view showing an example of an optical module mounting structure (before connection) according to the sixth embodiment of the present invention.
- FIG. 19A is a schematic perspective view showing a mounting structure (before connection) of the optical module according to the seventh embodiment of the present invention.
- FIG. 19B is a schematic perspective view showing a mounting structure (before connection) of the optical module according to the seventh embodiment of the present invention.
- FIG. 20A is a schematic perspective view showing an example of an optical module mounting structure (before connection) according to the seventh embodiment of the present invention.
- FIG. 20B is a schematic perspective view showing an example of the mounting structure (after connection) of the optical module according to the seventh embodiment of the present invention.
- FIG. 21A is a schematic perspective view showing a mounting structure (before connection) of the optical module according to the eighth embodiment of the present invention.
- FIG. 21B is a schematic perspective view showing a mounting structure (after connection) of the optical module according to the eighth embodiment of the present invention.
- FIG. 22A is a schematic perspective view showing an example of an optical module mounting structure (before connection) according to the eighth embodiment of the present invention.
- FIG. 22B is a schematic perspective view showing an example of the mounting structure (after connection) of the optical module according to the eighth embodiment of the present invention.
- FIG. 23A is a schematic perspective view showing an example of an optical module mounting structure according to a ninth embodiment of the present invention.
- FIG. 23B is a schematic perspective view showing an example of an optical module mounting structure according to a ninth embodiment of the present invention.
- FIG. 24A is a schematic perspective view showing a mounting structure (after connection) of the optical module according to the tenth embodiment of the present invention.
- FIG. 24B is a schematic perspective view showing an optical connector (after connection) in the mounting structure of the optical module according to the tenth embodiment of the present invention.
- FIG. 25A is a schematic perspective view showing a mounting structure (after connection) of an optical module according to a modified example of the tenth embodiment of the present invention.
- FIG. 25B is a schematic perspective view showing an optical connector (after connection) in the mounting structure of the optical module according to the modified example of the tenth embodiment of the present invention.
- the optical module mounting structure (hereinafter, referred to as “mounting structure”) according to the present embodiment is used for mounting the optical module on the optical mounting board 1 as shown in FIG. 1A.
- the optical mounting board 1 includes a mounting structure 10, a board 2, and an integrated circuit 3 according to the present embodiment.
- an integrated circuit 3 is mounted near the center of the board 2, and a plurality of optical modules 14 are mounted on the same board 2 around the integrated circuit 3.
- the optical mounting board 1 is a first optical waveguide component and an optical module 14 in the mounting structure 10 before the connection between the first optical connector 11 and the second optical connector 12. It has 1 optical fiber 13 and 1st optical connector 11.
- FIG. 1B shows only a part of one side and two sides of FIG. 1A, and the other sides are omitted. The same applies to the following figure.
- the mounting structure 10 includes the optical module 14, the first optical fiber 13, the first optical connector 11, the second optical connector 12, and the second optical fiber 13_2. And. Further, hereinafter, the direction of the optical fiber housed in the optical connector according to the present invention is referred to as "longitudinal direction of the optical fiber".
- the first optical fiber 13 and the second optical fiber 13_2 may be a plurality of optical fibers (hereinafter, also referred to as an optical fiber group) or an optical waveguide. ..
- the optical fiber and the optical fiber group are shown as an example of the optical waveguide component.
- Other optical waveguide components include optical waveguides and optical elements.
- FIGS. 1A and 1B various basic components of the present invention will be described in detail.
- the integrated circuit 3 is, for example, an ASIC (Application Specific Integrated Circuit) switch, and also various processors (collectively referred to as xPU) such as a CPU (Central Processing Unit) and a GPU (Graphics Process Unit). It is appropriately used depending on the application of optical interconnection or computing such as Signal Processor) or FPGA (Field-Programgable gate Array).
- xPU Application Specific Integrated Circuit
- CPU Central Processing Unit
- GPU Graphics Process Unit
- the substrate 2 is, for example, a known printed circuit board, a BU (Billed-up) substrate, an electric substrate provided with high-frequency electrical wiring such as a ceramic substrate, and although omitted in the drawing, a capacitor, a coil, a resistor, an electric connector, and electricity Multiple various electrical parts such as contacts are integrated.
- a BU board or the like it may be separately mounted on a second parent board such as a printed circuit board.
- the optical module 14 is composed of an aggregate of various optical elements constituting an optical transmitter / receiver and various electric elements for photoelectric conversion.
- Optical elements are, for example, optical circuits, light emitting elements, light receiving elements, light modulation elements, and optical functional elements.
- the light emitting element is a known DFB (Distributed Feedback) laser array, DBR (Distributed Bragg Reflector) laser array, VCSEL (Vertical Cavity Surface Emitting Laser) array, etc., and the light receiving element is a PD. be.
- DFB Distributed Feedback
- DBR Distributed Bragg Reflector
- VCSEL Very Cavity Surface Emitting Laser
- the light modulation element is, for example, one that is directly modulated on the light emitting element, one that integrates an EA (Electro-Absortion) modulator, or an external modulation element consisting of a Machzenda interference circuit or a ring modulator circuit. It is composed.
- EA Electro-Absortion
- Optical functional elements include splitters, wavelength duplexers, optical switches, polarization control elements, optical filters, etc. Any of these can be used as an optical element, and an optical transmitter / receiver is configured by combining the various elements with a Si waveguide or the like which is a base of an optical circuit.
- a circuit in which the various light emitting elements, light receiving elements, light modulation elements, optical functional elements, etc. are monolithically integrated or hybridly integrated in a Si waveguide is also called an optical integrated circuit (PIC).
- the Si waveguide is an optical circuit in which a Si thin wire formed on a BOX layer of a known SOI substrate is used as a core, and a clad portion made of SiO2, SiOx, SiN, SiON, etc. is provided around the core.
- optical circuit in addition to the Si waveguide, an optical circuit made of a compound semiconductor such as InP may be used.
- a glass-based waveguide such as a quartz-based planar light wave circuit, a polymer waveguide, an LN, or the like may be used.
- a strong dielectric waveguide or the like may be used, or a PIC based on these may be used.
- the optical transmitter / receiver has a plurality of channels and is arranged in an array, so that the transmission capacity can be further increased.
- An electric element for driving and controlling various optical elements is arranged in the vicinity of the optical transmitter / receiver and is electrically connected to the optical transmitter / receiver.
- the electric element is, for example, a driver circuit for driving an LD or an external modulator, or a transimpedance amplifier circuit for amplifying an electric input to a PD. Further, circuits such as a power supply circuit, a retimer circuit, and a clock circuit may be further added.
- the electrical connection between the optical transmitter / receiver and the electrical element may be any known electrical connection technique such as wire bonding, flip chip bonding, or via electrical wiring of another package substrate.
- the optical element or PIC is provided with an optical input / output unit for inputting / outputting light to the outside corresponding to a plurality of channels of the optical transmitter / receiver, and this can be combined with a plurality of optical fibers or a polymer optical waveguide. Light can be input and output to the outside by connecting optically.
- Edge Couplig there is a method in which an optical fiber or an optical waveguide is arranged on a connection end surface having the optical input / output unit and connected so that the optical axes of the respective waveguide cores match.
- the Edge Couple is combined with a spot size converter unit, a spatial optical system provided with lens components, and the like so that the respective mode field diameters match.
- a grating coupler may be integrated in a PIC or the like, and light may be input / output from the upper part or the lower part of the PIC.
- an optical path conversion unit may be provided on the connecting end faces of a plurality of optical fibers or optical waveguides.
- an optical fiber array component in which a bent fiber is built in and fixed, or a mirror for optical path conversion may be integrated.
- the PIC and the cores of the optical fiber or the optical waveguide may be brought close to each other to adiabatically transfer light.
- a minute polymer wiring may be formed between the connection targets and optically connected by using a stereolithography technique or the like.
- the optical module is composed of an optical transmitter / receiver optically connected to the optical fiber or the optical waveguide and an aggregate of various electric elements electrically connected to the optical transmitter / receiver, and these are further integrated circuits. It is electrically connected to the integrated circuit via an electric wiring and an electric contact provided on the mounted substrate, or another electric wiring component provided on the substrate and an electric contact.
- any known mounting form may be used as long as it can be electrically connected.
- an optical transmitter / receiver or an electric element in an optical module can be directly mounted on the substrate, and electrical connection can be performed by wire bonding, flip chip connection, or the like.
- an optical transmitter / receiver or an electric element may be mounted on another package substrate to form an optical module with a package, and the package may be mounted so as to be electrically connected to the substrate.
- the method of electrical connection is, for example, in addition to wire bonding or flip chip connection, solder connection such as BGA (Ball Grid Array) or LGA (Land Grid Array), solder part such as PGA (Pin Grid Array), or metal.
- solder connection such as BGA (Ball Grid Array) or LGA (Land Grid Array), solder part such as PGA (Pin Grid Array), or metal.
- a connection via a pillar or the like may be used.
- a pressing structure may be separately provided in addition to the electric terminal to connect as a so-called electric socket as an electric connector.
- the substrate and the optical module can be attached and detached.
- the package includes a Si interposer in which a polyimide having an electric wiring built therein is formed on Si, a similar glass interposer, a ceramic substrate such as alumina or LTCC (Low Temperature Co-fired Ceramics), or another glass epoxy.
- a printed circuit board such as a substrate, a metal substrate, or the like may be used.
- it may be an interposer made of a thin film resin having electrical wiring inside the thin film polyimide.
- the electric element, PIC, or the like may be molded to protect the electric element.
- lid parts may be placed on the upper part and the outer peripheral part of the package.
- the lid component is made of, for example, a metal component and has a role of protecting the electric element and the optical transmitter / receiver.
- the electric element, the optical transmitter / receiver, or the package may be thermally connected via a heat transfer unit to have a function of transferring or radiating heat generated by each element constituting the optical module to the outside.
- the optical fiber to be connected will be described. Any known type and material of optical fiber and type and material of ferrule can be applied.
- the optical fiber may be either a known quartz optical fiber or a plastic fiber.
- the optical fiber can be any of single mode fiber, multimode fiber, polarization holding fiber, photonic crystal fiber, multicore fiber and the like.
- the periphery of the optical fiber is coated, but in the portion other than the inside of the ferrule microhole, a known resin coating (for example, acrylic, epoxy, silicone, polyimide, etc.) and the periphery thereof are formed around the optical fiber.
- a known resin coating for example, acrylic, epoxy, silicone, polyimide, etc.
- a silicone tube, a nylon coating, or the like may be provided in two or more layers.
- the optical fiber can be handled more easily by using a known tape fiber that is taped and bundled.
- an optical waveguide having a core and a cladding corresponding to a plurality of channels of the optical transmitter / receiver in the PIC may be used.
- the optical waveguide is made of, for example, a polymer resin, for example, a resin having an adjusted refractive index of the core clad.
- any known waveguide material may be used as the polymer waveguide material.
- any of epoxy resin, acrylic resin, silicone resin, polyimide resin, polynorbornene resin, polyoxetane resin, organic-inorganic hybrid resin, etc. may be used, and a halogen substituent obtained by fluorinating, chlorinating, or brominating the resin is used. You may.
- any derivative such as a derivative whose chemical structure is partially changed based on the resin may be used.
- a derivative such as a derivative whose chemical structure is partially changed based on the resin
- a single-mode waveguide or a multi-mode waveguide may be used, and of course, the waveguide core spacing and the number of channels can be arbitrarily applied.
- a glass-based waveguide having a core in the glass may be used.
- the waveguide other than the polymer thin film glass is preferable from the viewpoint of flexibility.
- the waveguide may be formed by changing the refractive index by photoinduction or the like.
- the plurality of optical fibers or optical waveguides are provided with an optical connector (first optical connector) 11 at one end different from one end connected to the optical module.
- the optical connector is, for example, a ferrule having a plurality of microholes having an inner diameter slightly larger than the outer diameter of the optical fiber (for example, about 0.5 to 1.5 ⁇ m), and is, for example, a known MT ferrule.
- the optical connector has a separate positioning structure, and the positioning structure consists of two guide pins (male side) and guide pin holes (female side) at both ends, as used for connecting the MT connector, for example.
- the guide pin provided for one ferrule is inserted into the other, so that the optical fibers can be positioned with high accuracy.
- An optical fiber from which the coating has been removed is housed in the microhole in the optical connector, and the optical fiber and the ferrule are fixed by an adhesive.
- the adhesive is not shown in the drawings.
- the connecting end faces of the optical fiber and the ferrule are flat-polished so that they are substantially the same surface.
- the connecting end face of the optical fiber may be slightly protruded from the ferrule end face and polished so as to have a convex spherical surface.
- the polishing angle may be a right angle or a known oblique end face angle.
- the pitch of the optical fibers is, for example, about 250 ⁇ m, and the number of optical fibers is 8 in the figure.
- the pitch and the number of cores are arbitrary according to the number of channels of the optical module, and any number of cores such as 2 cores, 4 cores, 8 cores, 12 cores, 16 cores, 24 cores, and 32 cores can be applied.
- a coating is applied around the optical fiber, but a known resin coating (for example, acrylic, epoxy, silicone, polyimide, etc.) is arranged around the portion other than the inside of the microhole of the ferrule. Furthermore, it is grouped as a plurality of tape fibers.
- a known resin coating for example, acrylic, epoxy, silicone, polyimide, etc.
- a boot component integrated with the ferrule may be separately provided to protect the fiber.
- This boot part is a known one used for assembling an MT connector or the like, and this boot part may be omitted if necessary.
- the guide pin may be fixed by providing a separate part or a joining material on the male ferrule so as to prevent the guide pin from falling off.
- a tapered shape may be provided in the vicinity of the guide pin hole, the micro hole, and the tip of the guide pin, if necessary, so as to facilitate insertion.
- the form of the multi-core optical connector is not limited to the MT ferrule, and any known optical connector that realizes multi-core connection of an optical fiber can be applied.
- a plurality of microholes may be provided in a cylindrical ferrule used for a single-core connector to fix the fiber.
- a structure known as a fan-in / fan-out structure for a multi-core fiber for example, a structure in which a plurality of optical fibers are filled and arranged in one microhole and fixed may be used.
- two opposing ferrules When using a cylindrical ferrule, two opposing ferrules may be aligned and held via a split sleeve known for a single-core connector as an adapter. At this time, the optical fiber accommodated in one of the optical connectors may be a multi-core fiber.
- any of general-purpose plastic, engineering plastic, super engineering plastic, etc., which are often used for MT ferrule, may be used.
- a processed product having the same structure and based on any material such as glass material, semiconductor material, or ceramic material may be used.
- a ferrule structure made of a glass material having a positioning structure may be formed by positioning and adhering to both ends at predetermined positions.
- protrusions and the like are formed or attached to one of the ferrule end faces, such as the fitting of a notch and a groove, whichever one. May be provided with a guide groove or the like that fits the protrusion. Further, fitting of the outer shape may be used, and any fitting structure or the like can be applied as long as the same accuracy can be guaranteed.
- a waveguide such as a polymer waveguide
- a rectangular groove or a rectangular hole for accommodating the polymer waveguide is provided in the MT ferrule and the waveguide is provided in the ferrule.
- the ferrule and the polymer waveguide can be integrated to provide a similar optical connector structure, such as a known PMT connector (Polymer Waveguide Connected with MT connector).
- Magnetic components (first magnetic component 114, second magnetic component 124) are located around or inside each of the optical connectors (first optical connector 11, second optical connector 12) connected to each other. Is placed and connected to the ferrule.
- the magnetic component is composed of either a permanent magnet which is a hard magnetic material or a soft magnetic material (for example, a magnetic metal attached to a magnet), or a composite of a hard magnetic material and a soft magnetic material.
- the opposing magnetic component A magnetic force can be applied between them. If it is not necessary to attach / detach the optical connectors to each other, the magnetic parts may be permanently connected with additional mechanical parts or an adhesive, if necessary. The structure, materials and effects of the magnetic parts will be described later.
- a plurality of short optical fibers 13 are drawn out from each of the plurality of optical modules 14, and a first optical connector 11 is provided at an end thereof (FIG. 1A).
- a similar second optical connector 12 is connected to the optical connector so as to face each other (FIG. 1B).
- FIGS. 3A and 3B show perspective views around the optical connector of the mounting structure 10 before and after connection, respectively. Further, each of FIGS. 3A and 3B shows a schematic top view of the mounting structure 10 before and after the connection, with the plane A in FIG. 2B as a cross section.
- the first optical connector 11 includes a ferrule 113 in which a plurality of optical fibers (first optical fibers) 13 are housed via boots 112, a first magnetic component 114, and an end face 113_1 of the ferrule. Is provided with a guide pin 115 as a positioning structure.
- the second optical connector 12 includes a ferrule 123 in which a plurality of optical fibers (second optical fibers) 13_2 are housed via boots 122, a second magnetic component 124, and a first optical connector 11.
- a guide hole 125 into which the guide pin 115 is inserted (fitted) is provided as a positioning structure on the end surface of the ferrule facing the light.
- the ferrule 113 is, for example, an MT ferrule.
- all magnetic parts are made of hard magnetic materials (so-called permanent magnets).
- permanent magnets any known magnet may be used depending on the magnetic force to be developed.
- a neodymium magnet can be used as a typical magnet.
- any known magnet such as ferrite magnet, alnico magnet, samarium-cobalt magnet, KS steel, MK steel, and neodium iron boron magnet can be used.
- any magnet whose magnetic characteristics are adjusted by slightly changing these compositions can be used in the same manner. These may be appropriately selected in consideration of the required magnetic force, thermal demagnetization at the operating temperature, and the like.
- first and second magnetic parts 114 and 124 are arranged so as to surround the ferrules 113 and 123 in the first and second optical connectors 11 and 12, respectively, and are integrated with the ferrules, respectively. There is.
- a guide pin is provided on the end surface of the ferrule 113 of the first optical connector 11 and a guide hole is provided on the end surface of the ferrule 123 of the second optical connector 12, but the end surface of the ferrule 113 of the first optical connector 11 is provided.
- a guide hole may be provided, and a guide pin may be provided on the end surface of the ferrule 123 of the second optical connector 12.
- the ferrule 113 of the first optical connector 11 and the ferrule 123 of the second optical connector 12 are positioned by the guide pins.
- the optical fiber is, for example, a quartz-based single-mode fiber having a clad diameter of 125 ⁇ m and a core diameter of about 10 ⁇ m.
- the ferrules 113 and 123 and the first and second magnetic parts 114 and 124 are integrated via an adhesive. In addition to bonding, it may be integrated by mechanical fitting or metal joining (solder, etc.), or it may be integrated via another mechanical component for integration, and the magnetic force between the magnetic components may be applied. Any known method may be used as long as the structure is transmitted to the ferrule.
- the north and south poles of each other are arranged so that a magnetic attraction acts between the opposing magnetic parts.
- a magnetic attraction acts between the opposing magnetic parts.
- the south pole side is arranged on the connection end face side of the first magnetic component 114
- the second magnetic component 124 By arranging the S pole side on the connection end face side of the above, magnetic attraction acts by NS. Due to this magnetic force, an attractive force also acts between the ferrules integrated with the magnetic parts.
- optical fiber is polished so as to slightly protrude from the ferrule with respect to the longitudinal direction of the optical fiber on the connection end face.
- connection end face of the magnetic component and the connection end face of the ferrule are positioned so that the same surface or the connection end face of the magnetic component is pulled in from the ferrule connection end face in the longitudinal direction of the optical fiber.
- a conventional optical module mounting form such as CPO
- a plurality of optical fibers optically connected to a plurality of optical modules on a substrate are drawn out, and the other is provided via an optical connector provided at one end of the optical fiber.
- an optical connector By connecting to an optical connector, light is input and output to and from an external optical fiber.
- connection end faces by magnetic attraction without using the mechanical spring parts as described above, and a leaf spring part or a housing part is used.
- the connected state can be maintained by magnetic attraction without any problem.
- connection structure of optical connectors with a significantly higher density than before, and it is possible to mount a plurality of optical modules mounted on a board at a high density.
- the protrusion of the optical fiber end face from the ferrule end face is appropriately set, and the pressing force by the magnet is applied to all the optical fibers. It is possible to realize a physical contact (PC) connection.
- PC physical contact
- connection form between optical connectors is not limited to this.
- the gap between the optical fibers to be connected may be filled with a resin (refractive index matching material) having an appropriate refractive index to suppress Fresnel reflection.
- the end face of the optical fiber may be polished diagonally to form a connection form in which the return light due to Fresnel reflection is suppressed.
- a space coupling system may be constructed and connected by providing a microlens structure or a microlens component in the vicinity of the end face of the optical fiber while providing a gap between the connection end faces.
- the connection end face of the magnetic component may be arranged so as to protrude from the connection end face of the ferrule.
- an antireflection coating or the like may be appropriately applied to the end face of the optical fiber connection. Alternatively, it may be more simply configured to prevent return light as an oblique end face while providing a constant air gap.
- the surfaces of the opposing magnetic components are preferably parallel to each other in order to stabilize the vector of the magnetic attraction in the longitudinal direction of the optical fiber.
- the parallelism is not perfect, the decrease in optical coupling loss can be ignored unless the abutting angles of the ferrules in the longitudinal direction deviate significantly. That is, good optical characteristics can be achieved even with parallelism that can be ensured with practical machining accuracy.
- the first magnetic component 114 on the first optical connector 11 side connected to the optical module 14 side is made of a soft magnetic material. Let it be a magnetic metal.
- the optical module 14 is provided with a metal lid 15.
- the lid may be arranged so as to surround the optical module, or may be provided only on the upper part.
- the soft magnetic material a so-called metal attached to a magnet is known, and for example, iron, nickel, cobalt, or a material having magnetism of stainless steel (SUS) which is an iron-based alloy (for example, SUS430) is used. Can be done.
- SUS stainless steel
- SUS430 an iron-based alloy
- the magnetic force generated and the attractive force are larger when all the opposing magnetic parts are magnets.
- the attractive force is inferior to the above, the other may be a soft magnetic material from the viewpoints of workability, prevention of sticking to other parts, prevention of influence by magnetic force, etc., and these are required attractive force and size of magnetic parts. , Can be selected as appropriate according to the requirements.
- the magnetic component (first magnetic component 114 or second magnetic component 124) is arranged so as to surround the (ferrule 113 or ferrule 123), but naturally the magnetic force is generated. This is not the case as long as it has a structure capable of expressing.
- 5A to 5K show arrangement variations of the positional relationship between the magnetic component (first magnetic component 114 or the second magnetic component 124) and the ferrule (ferrule 113 or ferrule 123) as viewed from the connection end face side of the optical connector.
- FIG. 5A in addition to the structure in which the outer circumference is surrounded by magnetic parts as in FIG. 1, FIG. 5B, of course, a configuration in which only one surface of the outer circumference is a magnetic part may be used. Further, as shown in FIGS. 5C and 5D, it may be arranged on the upper and lower surfaces and the left and right surfaces.
- the magnetic component does not have to be a single material, and may be a combination of a hard magnetic material and a soft magnetic material.
- a part of the outer circumference may be a hard magnetic material (magnet) and a part may be a soft magnetic material.
- FIGS. 5F and G by incorporating or penetrating a magnetic component in the ferrule, it is possible to further reduce the size and improve the mountability.
- These may be joined mechanically, may have a structure integrated by magnetic force, or may use any joining means such as adhesion or solder.
- a combination of a plurality of magnetic parts may be used.
- a magnetic metal component such as a metal leaf similar to SUS430 may be attached to any end surface of FIG.
- plating treatment may be performed if necessary.
- a soft magnetic material such as nickel as the plating material, it is possible to minimize the reduction of the magnetic force corresponding to the plating thickness.
- FIG. 5K a structure in which a plate of a magnetic component made of a soft magnetic material is further provided around the magnetic component may be used.
- FIG. 6 shows a perspective view of the mounting structure 10_2 of the optical module showing an example of a plurality of combinations having different cross-sectional structures.
- FIGS. 7A to 7F show the magnetic component (first magnetic component 114 or the second magnetic component 124) and the ferrule (ferrule 113 or ferrule 123) in the side sectional view of the optical fiber when viewed in the longitudinal direction. The arrangement variation of the positional relationship is shown.
- the magnetic component may be shorter than the ferrule, or as shown in FIG. 7B, of course, it may be longer.
- the thickness of the magnetic component may be changed along the tape fiber as shown in FIG. 7C.
- the structure may be such that the magnetic component protrudes from the connection end face rather than the ferrule.
- any combination of the magnetic parts any combination as shown in FIGS. 5A to 5K and 7A to 7F may be used, and any combination of opposing pairs may be used as the connection structure.
- any combination other than those shown in FIGS. 5A to 5K and 7A to 7F may be inferred.
- it may be a magnetic component in which a magnetic metal-permanent magnet-magnetic metal is combined in this order in the longitudinal direction.
- the other when one is a magnetic component containing a magnet, the other may be composed of only a soft magnetic material. If one is composed of only soft magnetic material, the magnetic force is slightly reduced as compared with the case where both are composed of magnets, but it is not necessary to worry about the combination and arrangement of NS that develops magnetic attraction, so that it is practical. In some cases, it may be preferable and may be appropriately selected.
- a permanent magnet when used for a magnetic component, it is not always necessary to use a single magnet.
- a configuration in which a plurality of permanent magnets 1141 and 1142 in the first magnetic component 114 and a plurality of permanent magnets 1241 and 1242 in the second magnetic component 124 are combined and connected may be used. It may be a multi-pole magnet divided into one dimension in the longitudinal direction of the fiber or in the direction orthogonal to the longitudinal direction.
- a multi-pole magnet can be formed by connecting magnet parts having a pair of pre-magnetized NS using magnetic attraction, and if necessary, fill the gap with adhesive or solder to make an integral part. be able to.
- another soft magnetic material such as a metal plate that functions as a so-called yoke and exerts a larger magnetic force may be added.
- a metal plate that functions as a so-called yoke and exerts a larger magnetic force
- first optical fibers 13 are accommodated in the first optical connector 11
- a plurality of optical fibers 13 are accommodated.
- the polymer waveguides 111_2 and 121 may be used instead of the optical fiber of.
- the present invention is also applied to the connection between polymer waveguides or between a polymer waveguide and an optical fiber by using a polymer waveguide instead of a plurality of optical fibers to form a structure similar to a PMT connector. Can be done.
- FIGStructure of mounting structure of optical module> 10A and 10B show perspective views of the optical module mounting structure 20 according to the second embodiment of the present invention before and after connection, respectively.
- the basic configuration is the same as that of the first embodiment.
- the ferrule 213 uses the MT ferrule as described above, and the positioning structure uses a guide pin.
- the first magnetic component 214 is arranged and integrated on the upper surface of the ferrule 213. As shown in FIG. 10A, the upper surface portion of the first magnetic component 214 extends to the optical module 14 and is integrated with the lid arranged around the optical module 14. At this time, the first magnetic component 214 on the first optical connector 21 side is made of a magnetic metal iron-based material which is a soft magnetic material.
- the first optical fiber 13 is arranged below the first magnetic component 214 extending from the first optical connector 21, and the optical module is located below the first magnetic component 214 around the substrate 2. 14 is arranged.
- the upper surface shape of the first magnetic component 214 an example in which the width is narrow above the first optical fiber 13 is shown, but the upper surface shape may be a rectangle having a constant width. ..
- the example in which the first magnetic component 214 is arranged only on the upper surface of the ferrule 213 is shown, but it may be arranged on the side surface or the bottom surface of the ferrule 213.
- the first magnetic component 214 may be arranged, for example, in the form shown in FIGS. 5A to 5K.
- the second magnetic component 224 is arranged on the upper surface of the ferrule 223.
- the second magnetic component 224 is composed of a neodymium magnet which is a hard magnetic material.
- the first optical connector 21 and the second optical connector 22 are connected by magnetically connecting the opposing end faces of the first magnetic component 214 and the second magnetic component 224.
- the second magnetic component 224 is arranged only on the upper surface of the ferrule 223, but it may be arranged on the side surface or the bottom surface of the ferrule 223.
- the second magnetic component 224 may be arranged, for example, in the form shown in FIGS. 5A to 5K, and may have a configuration in which a magnetic force acts between the second magnetic component 224 and the first magnetic component 214.
- the magnetic metal which is the first magnetic component 214, is integrated with the lid arranged around the optical module 14. That is, the lid is also made of magnetic metal.
- the lid plays a role of protecting the electric element and the optical transmitter / receiver in the optical module 14, and is thermally connected to the electric element and the optical transmitter / receiver or a package portion on which they are mounted and a heat transfer portion. It has a function of transferring or radiating heat generated by each element constituting the optical module 14 to the outside.
- the same effect as that of the first embodiment can be exhibited. That is, it is possible to apply a pressing force between the optical connectors by magnetic attraction without using mechanical spring parts in the connection of the optical connector, and without using leaf spring parts or housing parts by magnetic attraction. The connection status can be maintained.
- the number of members required for connecting the optical connector can be reduced, and space saving at the connection part can be realized. Furthermore, the complicated work required for insertion and removal of leaf spring parts and the like can be eliminated, and the mounting space required for attachment and detachment work can be minimized.
- the total number of parts can be reduced by sharing the first magnetic component 214 with the lid of the optical module 14, and the space of the optical module can be further reduced. Can be realized.
- the surface area of the lid can be increased to the optical fiber extraction side by this configuration.
- the lid preferably has a large thermal conductivity, and is preferably iron-based rather than SUS-based.
- the thermal conductivity can be increased by adopting a structure in which the lid thickness is increased or the heat transfer coefficient of the surface is decreased.
- a member having high thermal conductivity may be separately attached on the lid to efficiently transfer heat to the optical connector side.
- a graphite sheet, a heat pipe, or the like may be further integrated on the lid. The same applies to the following embodiments.
- one optical module is densely arranged with integrated circuits and other optical modules. Therefore, in order to increase the surface area of the lid, fins are provided, the thickness is increased, or the substrate is used. It was necessary to take an extra area of.
- the lid can be extended to the optical fiber lead-out side to increase the surface area, and no extra space is taken for heat dissipation of the lid, so that a space-saving optical module mounting form can be realized. ..
- the optical fiber 13 drawn from the optical module 14 and the first optical connector 21 are prevented from hanging due to gravity. It is possible to prevent the optical fiber 13 from being subjected to extra stress.
- the optical fiber When heat is applied to the lid, heat is also transferred to the first magnetic component 214 (integrated with the lid) near the first optical connector 21, but the optical fiber is positioned by the MT ferrule and the guide pin. Since it is performed by positioning the optical fibers, the optical characteristics can be maintained without affecting the optical axis deviation between the optical fibers.
- the lid and the first magnetic component 214 are shown as an integral component as an example, but as separate components, they are connected by any method such as adhesion, soldering, or mechanical fastening after mounting. Can exhibit the same effect.
- the first magnetic component 214 and the second magnetic component 224 are arranged only on the upper surfaces of the ferrules 213 and 223, respectively. Any of the configurations can be applied so as to cover the above.
- FIGStructure of mounting structure of optical module> 11A and 11B show perspective views of the optical module mounting structure 30 according to the third embodiment of the present invention before and after connection, respectively.
- the basic configuration is the same as that of the second embodiment, and the first magnetic component 314 and the first optical connector 31 are arranged around the first optical connector 31 connected to the optical module 14 via the short fiber 13. It is integrated.
- the upper surface of the first magnetic component 314 extends to the optical module 14 and is integrated with the lid arranged around the optical module 14.
- the first magnetic component 314_3 on the optical module 14 side is made of nickel, which is a magnetic metal.
- the first magnetic component 314 on the first optical connector 31 side is composed of a composite of nickel 314_1, which is a magnetic metal which is a soft magnetic material, and samarium-cobalt magnet 314_2, which is a hard magnetic material, and samarium-cobalt, which has a small thermal demagnetization.
- the magnet 314_2 is connected to the nickel 314___ on the optical module 14 side.
- the second magnetic component 324 integrated with the second optical connector 32 connected to the first optical connector 31 is composed of a neodymium magnet which is a hard magnetic material.
- first optical connector 31 and the second optical connector 32 are connected by magnetically connecting the opposing end faces of the first magnetic component 314 and the second magnetic component 324.
- the magnetic metal contained in the first magnetic component 314 is integrated with the metal lid arranged around the optical module 14.
- the first magnetic component 314 is a composite, but the vicinity of the connection end face of the first optical connector 31 is made of magnetic metal, and is separated from the connection end face toward the optical module 14 along the longitudinal direction of the optical fiber. A magnet is placed in the place where it is.
- the magnetic metal 314_1 and the magnet 314_2 in the first magnetic component 314 are connected by a magnetic force.
- the north and south poles of the magnet 314_2 included in the first magnetic component 314 are magnetized in the longitudinal direction of the optical fiber, and the second magnetic component 324 made of the magnet is similarly magnetized in the longitudinal direction of the optical fiber. It is arranged in the direction opposite to the pole of the magnet 314_2.
- the magnet portion of the first magnetic component 314 and the magnet portion of the second magnetic component 324 are included in the first magnetic component 314 and integrated with the metal lid along the longitudinal direction of the optical fiber.
- a magnetic circuit is formed through the magnetic metal portion, and a magnetic attraction is exhibited between the connecting end faces.
- the heat generated from the optical module 14 is generated through the heat radiation from the lid, but by using this configuration, the surface area of the lid is increased to the optical fiber extraction side. , It is possible to realize a more space-saving optical module mounting form without taking an extra space for heat dissipation of the lid.
- the optical fiber 13 drawn from the optical module 14 and the first optical connector 31 are prevented from hanging due to gravity. It is possible to prevent the optical fiber 13 from being subjected to extra stress.
- the magnetic force acting per unit volume can be greatly expressed as compared with the second embodiment.
- the size of the magnetic component for expressing the required pressing force can be further reduced, and further space saving can be achieved.
- the outer peripheral size of the short optical fiber portion is wider than the outer peripheral size around the optical connector, a magnet having a larger volume can be arranged along the short optical fiber, so that the magnetic force can be applied without increasing the space. It is also suitable for increasing.
- any combination described above can be used as long as the dimensions and arrangement of the magnets in the first magnetic component 314 and the positional relationship between the magnetic metal and the magnet are within the range of maintaining the above-mentioned arrangement. You may use it.
- the magnetic metal is integrated in the vicinity of the lid and the connector connection portion, but a plurality of magnetic metal components and magnets are made of an optical fiber. It may be a combination arranged in the longitudinal direction.
- a magnetic metal lid provided around an optical module, a permanent magnet, and a magnetic metal in the vicinity of a connector connection portion are arranged in order along the longitudinal direction of the optical fiber, and are connected by a magnetic force or a magnetic force and a bonding material. May be good.
- optical fibers are shown as an example of the connection target, it can be naturally applied to the connection between the optical waveguides or the optical waveguide and the optical fiber.
- ⁇ Structure of mounting structure of optical module> 12A and 12B show perspective views of the optical module mounting structure 40 according to the fourth embodiment of the present invention before and after connection, respectively.
- the basic configuration is the same as that of the second embodiment, and the first magnetic component 414 is connected to the first optical connector 41 around the first optical connector 41 connected to the optical module 14 via the short fiber 13. It is integrated.
- the first magnetic component 414 on the first optical connector 41 side is composed of a composite of a magnetic metal SUS430 which is a soft magnetic material and a neodymium magnet which is a hard magnetic material.
- the upper surface of the first magnetic component 414 is made of a magnetic metal, and both side surfaces and the bottom surface are made of a hard magnetic material.
- the first magnetic component 414 may have, for example, the configuration shown in FIGS. 5A to 5K, and may have a configuration in which the upper surface is made of magnetic metal.
- the second magnetic component 424 integrated with the second optical connector 42 connected to the first optical connector 41 is composed of a neodymium magnet which is a hard magnetic material.
- the second magnetic component 424 integrated with the second optical connector 42 connected to the first optical connector 41 may be composed of a composite of a neodymium magnet which is a hard magnetic material and a magnetic metal component. ..
- the magnetic metal contained in the first magnetic component 414 is integrated with the metal lid arranged around the optical module 14.
- first magnetic component 414 is a composite
- both the magnetic metal portion and the permanent magnet portion of the hard magnetic material are arranged in the vicinity of the connection end face of the first optical connector 41. That is, a permanent magnet is arranged around the ferrule 413, and a magnetic metal integrated with the metal lid is provided above the permanent magnet.
- the permanent magnet included in the first magnetic component 414 and the ferrule 413 of the first optical connector 41 are integrated via an adhesive or the like, and the permanent magnet portion is further connected by magnetic force to the magnetic metal provided on the upper portion thereof. There is.
- the second magnetic component 424 has a magnet and a magnetic metal arranged so that the cross section of the connecting end face thereof is substantially the same as that of the first magnetic component 414.
- heat generated from the optical module 14 is generated through heat dissipation from the lid, but with this configuration, the surface area of the lid is set to the optical fiber extraction side.
- the optical fiber 13 drawn from the optical module 14 and the first optical connector 41 are prevented from hanging due to gravity. It is possible to prevent the optical fiber 13 from being subjected to extra stress.
- the first magnetic component 414 also contains a magnet and the connection end face also contains a magnet, a magnetic structure that works per unit volume as compared with the second embodiment. The magnetic force between the bodies can be expressed more.
- the size of the magnetic component for expressing the required pressing force can be further reduced, and the space for mounting the optical module can be further reduced.
- the first ferrule 413 constituting the first optical connector 41 is integrated with the surrounding magnet by using a bonding material, while being connected to the magnetic metal above it only by magnetic force. Therefore, when connecting the connectors to each other, the magnetic metal and the permanent magnet may be temporarily separated from each other in the lid and the first magnetic component 414, if necessary.
- the magnet is arranged on the connection end face of the optical connector in the configuration of the second embodiment, but the magnet is arranged on the connection end face of the optical connector in the configuration of the third embodiment.
- the magnetic force can be further increased.
- ⁇ Modification 1 of the fourth embodiment> 13A and 13B show perspective views before and after the connection in the optical module mounting structure 40_1 of the modified example of the fourth embodiment.
- the magnet portion 414_1 and the magnetic metal portions 414_2 and 414_3 are separately arranged in the longitudinal direction of the first magnetic component 414, and the magnetic metal portion 414_3 is integrated with the lid on the optical module 14 side.
- the first magnetic component is arranged around the ferrule 413, and the first magnetic component includes a magnet including the upper surface (magnet portion 414_1).
- the end face of the magnetic metal portion (magnetic metal portion) 414_2 arranged above the first optical fiber 13 in the first magnetic component is connected to the end face of the upper surface of the magnet portion 414_1 by magnetic force.
- the magnet portion 414_1 of the first magnetic component 414 is arranged around the ferrule 413 and is connected to the second magnetic component 424 around the second optical connector 42 by expressing a magnetic force. Even with such a configuration, the same effect as described above can be obtained.
- ⁇ Modification 2 of the fourth embodiment> 14A and 14B show perspective views before and after the connection in the optical module mounting structure 40_2 of the modified example of the fourth embodiment.
- the first magnetic component 414 integrated with the lid is made of a permanent magnet made of a hard magnetic material.
- the first magnetic component 414 is connected to the second magnetic component 424 around the second optical connector 42 by expressing a magnetic force.
- the volume of the magnets can be significantly increased without increasing the cross-sectional area of the connecting cross section.
- the magnetic force between the working magnetic structures can be expressed more, and the space for mounting the optical module can be further saved.
- optical fibers are shown as an example of connection targets, but of course, it can also be applied to optical waveguides or optical waveguides and optical fibers.
- FIG. 15A shows a perspective view of the first optical connector 51 and the second optical connector 52 before connection in the mounting structure of the optical module according to the present embodiment.
- FIG. 15B shows a side sectional view of the mounting structure after connection.
- the basic configuration is almost the same as that of the first modification of the fourth embodiment, the MT ferrule is used as the ferrule as described above, and the guide pin is used as the positioning structure (not shown), and the circumference of the ferrule is used. Magnetic parts are arranged and integrated in.
- a first magnetic component 514 is integrated with the first optical connector 51 around the first optical connector 51 connected to the optical module 14 via the short fiber 13.
- the upper surface portion of the first magnetic component 514 extends to the optical module 14, and is integrated with the lid arranged around the optical module 14, so that the magnetic metal portion and the magnet portion are formed in the longitudinal direction of the optical fiber. It is separated and connected.
- the difference from the modification 1 in the fourth embodiment is that the first magnetic component 514 protrudes from the end face of the ferrule 513 on the side connected to the second optical connector 52, and the light is emitted. It is composed of a composite of a portion 514_1 from the module 14 side to the ferrule 513 and a protruding portion 514_2.
- the former 514_1 is made of a magnetic metal SUS430, and the latter 514_1 is made of a neodymium magnet which is a hard magnetic material.
- the second magnetic component 524 integrated with the second optical connector 52 connected to the first optical connector 51 is composed of a neodymium magnet which is a hard magnetic material.
- connection end faces of the first ferrule 513 in the first optical connector 51 and the plurality of optical fibers (first optical fibers) 13 incorporated in the ferrule 513 are housed in the magnetic metal portion 514_1.
- a gap is formed between the second optical connector 52 and the connection end face of the optical fiber (second optical fiber) 13_2 incorporated in the second ferrule 523.
- the magnet portion (protruding portion) 514_2 of the first magnetic component 514 is set to a predetermined length, and a guide pin (not shown) provided at one end of the optical connector and optical fibers 13, 13_2 An opening is provided so as not to interfere with each of the spatial light beams input / output from the first magnetic component 514, and the magnetic metal portion 514_1 of the first magnetic component 514 is connected.
- microlens array structure 53 as described above is provided in the vicinity of the connection end faces of the respective optical fibers 13 and 13_2 to be connected.
- An antireflection film is formed on the end face of the microlens to suppress Fresnel reflection with air.
- a microlens component may be separately arranged in the vicinity of each connection end face.
- the pressing force required for the connection between the connectors may be smaller than that of the PC connection or the butt coupling via a matching agent or the like. By doing so, it is possible to realize further miniaturization of the magnetic component, and further space saving for mounting the optical module can be achieved.
- the ferrule may have a structure in which a plurality of optical fibers are fixed by using a cylindrical ferrule used for a single-core connector.
- positioning between cylindrical ferrules connected to each other is performed by accommodating them in a known split sleeve instead of a guide pin.
- 16B and 16C show cross-sectional views of the ferrule 513 of the first optical connector 51 and the ferrule 523 of the second optical connector 52, respectively.
- a cylindrical ferrule made of zirconia or the like is used for the ferrule 513 of the first optical connector 51, and one microhole in the cylindrical ferrule can be filled with a plurality of reduced diameter fibers 131 for positioning.
- the small-diameter fiber 131 is composed of a core 131a and a clad 131b, and a plurality of small-diameter fibers 131 are fixed with an adhesive 513a.
- a multi-core fiber 132 composed of a core 132a and a clad 132b is housed in a ferrule 523 of the second optical connector 52, and is fixed in the ferrule 523 with an adhesive 523a.
- the fan-in / fan-out structure makes it possible to realize a multi-core optical connection by associating each core 131a of the small-diameter fiber 131 with each core 132a of the multi-core fiber 132.
- the first optical connector 51 in the mounting structure according to this modification is composed of a cylindrical ferrule 513, a split sleep 515, and a first magnetic component 514.
- the first magnetic component 514 includes a flange 514_4 on the proximal end side (optical fiber 13 side) and a magnet portion 514_3 on the distal end side (connection side with the second optical connector 52).
- the flange 514_4 is made of SUS430, which is a magnetic metal.
- the magnet portion 514_3 has a through hole into which the split sleep 515 is inserted.
- the cylindrical ferrule 513 inserted (fitted) and fixed in the hole (recess) of the flange 514_4 is inserted and fixed in the split sleep 515 in the through hole of the magnet portion 514_3.
- the second optical connector 52 is composed of a cylindrical ferrule 523 and a second magnetic component 524.
- the second magnetic component 524 is made of a flange 524_4 of SUS430 which is a magnetic metal, and a cylindrical ferrule 523 is inserted (fitted) into a hole (recess) of the flange 524_4 and fixed.
- the cylindrical ferrule 523 of the second optical connector 52 is inserted into the split sleep 515 in the through hole of the magnet portion 514_3 in the first magnetic component 514 of the first optical connector 51, and the first optical connector 51 and the second Is connected to the optical connector 52 of.
- the magnetic portion 514_3 that connects the flange portion 514_4 of the first magnetic component 514 and the optical fiber in the longitudinal direction is used as a permanent magnet.
- a magnetic force acts between the first magnetic component 514 and the second magnetic component 524.
- a magnetic force is transmitted between the ferrules, and the pressing force required for PC connection can be applied to the connection end face.
- connection structures of the first optical connector 51 and the second optical connector 52 By arranging the connection structures of the first optical connector 51 and the second optical connector 52 in an array, a connection structure of a plurality of optical connectors can be realized without using a spring component (not shown). ..
- the same effect as that of the fourth embodiment can be obtained. Further, as compared with a multi-core ferrule such as an MT ferrule, the ferrule can be miniaturized, and the space for mounting the optical module can be further reduced.
- optical fibers are shown as an example of connection targets, but of course, it can also be applied to optical waveguides or optical waveguides and optical fibers.
- FIGStructure of mounting structure of optical module> 17A and 17B show perspective views of the optical module mounting structure 60 according to the sixth embodiment of the present invention before and after connection, respectively.
- the sixth embodiment can be applied to any of the first to fifth implementations, and relates to an array arrangement and connection of a plurality of optical connector connection structures when the CPO form is taken into consideration.
- a plurality of first optical connectors 61 drawn out from the plurality of optical modules 14 are arranged side by side on the array around the substrate 2.
- the first magnetic components 614 around the plurality of first optical connectors 61 are connected and integrated.
- the first magnetic component 614 is SUS430, which is a magnetic metal.
- the first magnetic component 614 is connected to the second magnetic component 624 on the upper portion of the second optical connector 62 by expressing a magnetic force.
- the size of the magnetic component can be further increased, and the magnetic force generated can be increased by enlarging the magnetic circuit. This means that the size of the connecting cross-sectional area of the magnetic component required to develop the required magnetic force can be reduced. As a result of the above, it is possible to further save space for mounting the optical module.
- the common first magnetic component 614 is also integrated or connected to the metal lid in the vicinity of the optical module 14 has been described, but as described in the first embodiment, if necessary. It may be separated from the lid.
- the common first magnetic component 614 is all magnetic metal
- all of them may be composed of magnets as a matter of course.
- it may be an NS single-pole magnet, but it can also be arranged in an array as a multi-pole magnet as described above.
- a plurality of first optical connectors 61 drawn from the plurality of optical modules 14 are arranged side by side in an array around the substrate 2, and the first optical connector 61 side of each of the first optical connectors 61 is arranged side by side.
- the magnetic component 614 is made of a composite of a magnetic metal SUS430 which is a soft magnetic material and a neodymium magnet which is a hard magnetic material
- a magnetic component 614_2 is added between the plurality of first magnetic components 614, respectively, to form a magnetic component. It may be configured to be connected by applying a magnetic force between them.
- it may be a combination of an integral magnetic metal common to each optical connector and a magnet provided in each optical connector, and as described above, any magnetic component such as a multi-pole magnet or a combination of a magnet and a magnetic metal can be used. Can be applied.
- FIGS. 19A and 19B show perspective views of the optical module mounting structure 70 according to the seventh embodiment of the present invention before and after connection, respectively.
- a seventh embodiment can be applied to any of the first to sixth implementations, and relates to an array arrangement and connection of a plurality of optical connector connection structures in consideration of the CPO form.
- a plurality of first optical connectors 71 drawn out from the plurality of optical modules 14 are arranged side by side on the array around the substrate 2.
- the first magnetic component 714 is arranged around the first optical connector 71, but as in the sixth embodiment, the first magnetic component 714 is a plurality of first optical connectors 71. Are arranged so as to be integrated.
- the first magnetic component 714 is SUS430, which is a magnetic metal.
- the first magnetic component 714 is also integrated or connected to the metal lid in the vicinity of the optical module 14, and the metal lid is shared so as to be collectively provided around the plurality of optical modules 14. There is.
- the first magnetic component 714 connecting the lid portion and the optical connector portion is divided on each of the plurality of optical fibers 13.
- it may be shared on a plurality of optical fibers 13 drawn from the plurality of optical modules 14.
- the lid is also a magnetic component common among a plurality of optical modules. Therefore, the number of member points can be further reduced.
- the size of the first magnetic component 714 can be increased, and by enlarging the magnetic circuit, the magnetic force to be expressed can be further increased. This means that the size of the connecting cross-sectional area of the magnetic component required to develop the required magnetic force can be reduced.
- a structure 76 such as a heat dissipation fin structure may be provided on the magnetic component to increase the surface area as shown in the mounting structure 70_1 shown in FIGS. 20A and 20B, whereby the lid portion is further provided.
- the surface area of the can be further increased.
- a member having high thermal conductivity may be separately attached on the lid to efficiently transfer heat to the optical connector side.
- a graphite sheet, a heat pipe, or the like may be further integrated on the lid.
- the common first magnetic component 714 shows an example in which all are magnetic metals, of course, all of them may be composed of magnets. In this case, it may be an NS single-pole magnet, but as described above, it may be arranged in an array as a multi-pole magnet. Further, it may be a combination of a magnetic metal and a magnet.
- the optical fibers are shown as an example of the connection target, but of course, it can also be applied to the connection between the optical waveguides or the optical waveguide and the optical fiber.
- FIGStructure of mounting structure of optical module> 21A and 21B show perspective views of the mounting structure 80 of the optical module according to the eighth embodiment of the present invention.
- the components and the connection structure are substantially the same as those in the first embodiment, but the board 2 on which the integrated circuit 3 and the plurality of optical modules 14 are mounted is mounted on a different second board (board) 2_2. , The boards are electrically connected to each other.
- the first magnetic component 814 provided around the first optical connector 81 is provided in the lower part (board side) of the first optical connector 81, and the first magnetic component 814 is on the second board 2_2. It is installed in.
- the first magnetic component 814 is connected to the second magnetic component 824 on the lower portion (board side) of the second optical connector 82 by expressing a magnetic force.
- the first magnetic component 814 may be shared among the optical connectors as shown in FIG. 21A, or may be divided as shown in FIG. 21B.
- the lower space between the magnetic parts is originally a space and does not impair the high-density mountability.
- the magnetic force acting per unit cross-sectional area can be expressed more, and the space for mounting the optical module can be further saved.
- optical fiber drawn from the optical module and the optical connector can be prevented from hanging due to gravity and supported, and extra stress can be prevented from being applied to the optical fiber.
- a lid and a first magnetic component 814_1 common among the optical connectors are used on the upper part of the first optical connector 81, and yet another first optical connector is used.
- the magnetic component 814_2 may be provided on the lower portion (board 2 side) of the first optical connector 81 and mounted on the second board 2_2.
- Another first magnetic component 814_2 is connected to the second magnetic component 824 at the lower part (board side) of the second optical connector 82 by expressing a magnetic force.
- a part of the first magnetic component 814 may be mounted on the second substrate 2_2 that is electrically connected to the substrate 2.
- the optical fibers are shown as an example of the connection target, but of course, it can also be applied to the connection between the optical waveguides or the optical waveguide and the optical fiber.
- FIG. 23A and 23B show perspective views of the mounting structure 90 of the optical module according to the ninth embodiment of the present invention.
- the mounting structure may be any combination of the first to eighth embodiments.
- the difference between the present embodiment and the above-described embodiment is that a plurality of optical fibers from the optical module 14 are housed in the 13th optical connector 91.
- the first optical connector 91 accommodates a plurality of optical fiber groups 13 drawn from two or more optical modules 14.
- FIG. 23A shows an arrangement example in which two optical fiber groups (a plurality of optical fibers) 13 are housed in one first optical connector 91.
- the figure on the right in the figure shows the mounting structure 90 before connection, and the two figures in the center of the figure show the mounting structure 90 after connection.
- the figure on the left in the figure shows a form in which the upper surface of the first magnetic component 914 extends above the optical module 14.
- the first magnetic component 914 is provided around or part of the periphery (upper part, side portion, etc.) of the first optical connector 91.
- the first magnetic component 914 is connected to the second magnetic component 924 on the upper portion of the second optical connector 92 by expressing a magnetic force.
- an example in which it is arranged on the substrate 2 is shown, but it may be arranged using the second substrate.
- FIG. 23B shows an arrangement example in which four optical fiber groups (a plurality of optical fibers) 13 are housed in one first optical connector 91.
- a first magnetic component 914_1 is provided on the upper portion of the first optical connector 91
- another first magnetic component 914_2 is provided on the lower portion (board side) of the first optical connector 91.
- another first magnetic component 914_2 is mounted on the second substrate 2_2.
- the first magnetic component 914_1 and 914_2 are connected to the second magnetic component 924 around the second optical connector 92 by expressing a magnetic force.
- an example of arranging using the substrate 2 and the second substrate 2_2 is shown, but the arrangement may be made using only the substrate 2.
- the number of optical connectors to be connected can be reduced, and further optical module mounting can be performed. Space can be saved.
- the longitudinal direction of the optical fiber to be connected may not be orthogonal to the connection end face of the optical module and may be taken out diagonally. This is used when an optical circuit is formed obliquely with respect to a direction orthogonal to the connection end face in the PIC of the optical module and the reflected return light is suppressed. In such a case, as shown in the present embodiment, it is suitable for consolidating a plurality of optical fiber groups into an optical connector, and it has a secondary effect of being excellent in mountability.
- FIG. 24A shows a perspective view of the mounting structure 100 of the optical module according to the tenth embodiment of the present invention.
- the mounting structure may be any combination of the first to ninth embodiments.
- the difference between the present embodiment and the above-described embodiment is that after the first and second optical connectors 101 and 102 are connected, they are arranged so as to be in contact with both the first and second magnetic components 1014 and 1024.
- the plate component 107 is further provided.
- FIG. 24B it includes a plate component 107 that surrounds each of a pair of connected first and second magnetic components 1014 and 1024.
- the plate component 107 is made of a soft magnetic material, such as SUS430 or nickel.
- FIG. 24B shows an example in which a plate component 107 surrounding a connection structure of a pair of first and second magnetic components 1014 and 1024 (first and second optical connectors 101, 102) is used, but a plurality of first and second magnetic components.
- a plate component 107 surrounding the connection structure of the first and second optical connectors 101, 102 may be used.
- the first and second optical connectors 101 and 102 are connected to the first and second optical connectors. It is possible to prevent leakage of the magnetic field lines acting between the first and second magnetic components 1014 and 1024 to the external space and to strengthen the confinement of the magnetic circuit.
- the plate component 107 does not have to be in contact with the entire circumference of the outer circumference, and may be a plate component that is in contact with at least one surface.
- preventing leakage of magnetic field lines to the outside leads to reducing the influence of magnetic force on the outside, preventing magnets from sticking to surrounding members and eliminating adverse effects on other electronic components due to magnetic fields. It also has the secondary effect of being able to do it.
- the shape of the plate component in the present embodiment is arbitrary, and the outer circumference of the magnetic component may be a processed structure or a structure in contact with at least one surface, if necessary.
- FIG. 25A shows the mounting structure 100_1 of the optical module according to the modified example of this embodiment.
- a common plate component 107 that collectively surrounds the connection structure of the plurality of first optical connectors 101 and the second optical connector 102 is used.
- a plate component 107 surrounding the connection structure of the pair of the first optical connector 101 and the second optical connector 102 may be used.
- a stopper structure 108 is provided which is connected to the second magnetic component 1024 to limit the movement in the direction facing the connector connection end.
- the stopper structure 108 even when stress is applied to the second optical connector 102 in the direction of disconnection along the longitudinal direction of the optical fiber. It is possible to prevent disconnection due to mechanical interference of the above, and to maintain a stable optical connection.
- a magnetic structure may also be used for the stopper structure 108 to apply a magnetic repulsive force to the second magnetic component 1024.
- first magnetic component and the second magnetic component an arrangement example of the first magnetic component and the second magnetic component is shown, but the present invention is not limited to this.
- the arrangement of the first magnetic component and the second magnetic component any of the arrangements shown in FIGS. 5A to K and 7A to F may be used, and of course, other than those shown in FIGS. 5A to K and 7A to FF.
- any combination that can be inferred may be used.
- the first magnetic component is placed around or around a part of the first optical connector (top, bottom, sides, etc.) and the second magnetic component is around or around a part of the second optical connector (top, bottom, sides, etc.). It may be arranged in the upper part, the lower part, the side part, etc.) so as to be connected by expressing a magnetic force between the first magnetic component and the second magnetic component.
- connection object the connection structure, the connection end face structure, the connector structure, and the magnetism described in the first to tenth embodiments.
- connection object any combination of component structure, arrangement, connection form, lid structure, material and arrangement of various components can be applied.
- the present invention relates to a small optical connection component and an optical connection structure, and can be applied to devices and systems such as optical communication.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
本発明の第1の実施の形態に係る光モジュールの実装構造を、図1A~図9を参照して説明する。
本実施の形態に係る光モジュールの実装構造(以下、「実装構造」という。)は、図1Aに示すように、光実装ボード1における光モジュールの実装に用いられる。
第1の実施の形態の変形例に係る実装構造10_1は、図4A、Bに示すように、光モジュール14側と接続する第1の光コネクタ11側の第1の磁性部品114を軟磁性材料である磁性金属とする。
本発明の第2の実施の形態に係る光モジュールの実装構造を、図10A~図10Bを参照して説明する。
図10A、Bは、それぞれ本発明の第2の実施の形態に係る光モジュールの実装構造20の接続前と接続後の斜視図を示す。基本構成は第1の実施の形態と同じであり、第1の光コネクタ21において、フェルール213としては前述と同様にMTフェルールを用い、位置決め構造としてはガイドピンを用いている。
本発明の第3の実施の形態に係る光モジュールの実装構造を、図11A~図11Bを参照して説明する。
図11A,Bは、それぞれ本発明の第3の実施の形態に係る光モジュールの実装構造30の接続前と接続後の斜視図を示す。基本構成は第2の実施の形態と同じであり、光モジュール14と短尺ファイバ13を介して接続する第1の光コネクタ31の周囲には第1の磁性部品314が第1の光コネクタ31と一体化している。第1の磁性部品314における上面部が光モジュール14まで延伸しており、光モジュール14の周囲に配置されたリッドと一体化している。
本発明の第4の実施の形態に係る光モジュールの実装構造を、図12A~図14Bを参照して説明する。
図12A、Bは、それぞれ本発明の第4の実施の形態に係る光モジュールの実装構造40の接続前と接続後の斜視図を示す。基本構成は第2の実施の形態と同じであり、光モジュール14と短尺ファイバ13を介して接続する第1の光コネクタ41の周囲には第1の磁性部品414が第1の光コネクタ41と一体化している。
図13A、Bそれぞれに、第4の実施の形態の変形例の光モジュールの実装構造40_1における接続前と接続後の斜視図を示す。図13Aでは、第1の磁性部品414の長手方向において磁石部414_1と磁性金属部414_2、414_3を分けて配置しており、前記磁性金属部414_3は光モジュール14側のリッドと一体化している。
図14A、Bそれぞれに、第4の実施の形態の変形例の光モジュールの実装構造40_2における接続前と接続後の斜視図を示す。本変形例では、前記リッドと一体化する第1の磁性部品414がすべて硬磁性材料の永久磁石から構成されている。第1の磁性部品414は、第2の光コネクタ42の周囲の第2の磁性部品424と磁力を発現させて接続されている。
本発明の第5の実施の形態に係る光モジュールの実装構造を、図15A~図17Bを参照して説明する。
図15Aに、本実施の形態に係る光モジュールの実装構造における第1の光コネクタ51と第2の光コネクタ52の接続前の斜視図を示す。図15Bに、接続後の実装構造における側面断面図を示す。基本構成は第4の実施の形態の変形例1とほぼ同じであり、フェルールとしては前述と同様にMTフェルールを用い、位置決め構造としてはガイドピンを用いており(図示せず)、フェルールの周囲に磁性部品が配置されて一体化されている。
また、図16Aに示すように、フェルールを単心形コネクタに用いられる円筒フェルールを用いて複数の光ファイバを固定する構造としてもよい。
本発明の第6の実施の形態に係る光モジュールの実装構造を、図17A~図18を参照して説明する。
図17A、Bは、それぞれ本発明の第6の実施の形態に係る光モジュールの実装構造60の接続前と接続後の斜視図を示す。第6の実施の形態は、第1~第5のいずれの実装形態にも適用でき、CPO形態を考慮した際の、複数の光コネクタ接続構造のアレイ配置及び連結に関するものである。
本発明の第7の実施の形態に係る光モジュールの実装構造を、図19A~図20Bを参照して説明する。
図19A、Bは、それぞれ本発明の第7の実施の形態に係る光モジュールの実装構造70の接続前と接続後の斜視図を示す。第7の実施の形態は、第1~第6のいずれの実装の形態にも適用でき、CPO形態を考慮した際の複数の光コネクタ接続構造のアレイ配置及び連結に関するものである。
本発明の第8の実施の形態に係る光モジュールの実装構造を、図21A~図22Bを参照して説明する。
図21A、Bは本発明の第8の実施の形態に係る光モジュールの実装構造80の斜視図を示す。構成要素および接続構造は第1の実施の形態とほぼ同一であるが、集積回路3および複数の光モジュール14が搭載された基板2が、異なる第2の基板(ボード)2_2に搭載されており、前記基板間の電気的接続がなされている。
本発明の第9の実施の形態に係る光モジュールの実装構造を、図23A~図23Bを参照して説明する。
図23A、Bに本発明の第9の実施の形態に係る光モジュールの実装構造90の斜視図を示す。実装構造は第1~第8の実施の形態のいずれの組み合わせでもよい。本実施の形態において上述の実施の形態と異なる点は、光モジュール14から複数本の光ファイバが13第1の光コネクタ91に収容される態様にある。
本発明の第10の実施の形態に係る光モジュールの実装構造を、図24A~図25Bを参照して説明する。
図24Aに、本発明の第10の実施の形態に係る光モジュールの実装構造100の斜視図を示す。実装構造は第1~第9の実施の形態のいずれの組み合わせでもよい。本実施の形態において上述の実施の形態と異なる点は、第1および第2の光コネクタ101、102の接続後に、前記第1および第2の磁性部品1014、1024の双方と接するように、配置されたプレート部品107をさらに備えていることにある。
10 光モジュールの接続構造
11 第1の光コネクタ
12 第2の光コネクタ
13 第1の光導波部品
13_2 第2の光導波部品
14 光モジュール
114 第1の磁性部品
124 第2の磁性部品
Claims (12)
- 順に、複数の光モジュールと、
第1の光導波部品と、
第1の光コネクタと、
第2の光コネクタと、
第2の光導波部品とを備え、
前記第1の光コネクタは、第1の磁性部品を有し、前記光モジュールと光学的に接続された前記第1の光導波部品が収容され、
前記第2の光コネクタは、第2の磁性部品を有し、前記第2の光導波部品が収容され、
前記第1の磁性部品と前記第2の磁性部品の少なくとも一方は硬磁性材料を含み、
前記第1の磁性部品と前記第2の磁性部品との間に磁力を働かせることで、前記第1の磁性部品と前記第2の磁性部品との対向する端面間のギャップが小さくなる方向に引力が印加されていることを特徴とする光モジュールの実装構造。 - 前記第1の磁性部品は軟磁性材料の磁性金属部品からなり、
前記光モジュールの周囲に備えるリッド部品と連結または一体化されていることを特徴とする請求項1に記載の光モジュールの実装構造。 - 前記第1の磁性部品は軟磁性材料の磁性金属部品と硬磁性材料の永久磁石部品からなり、
前記光モジュールの周囲に備えるリッド部品と連結または一体化されていることを特徴とする請求項1に記載の光モジュールの実装構造。 - 前記第1の磁性部品は硬磁性材料の永久磁石部品を含み、
前記光モジュールの周囲に備えるリッド部品と連結または一体化されていることを特徴とする請求項1に記載の光モジュールの実装構造。 - 前記リッド部品は複数の前記光モジュールの周囲に備えられ、連結または一体化されていることを特徴とする請求項2から請求項4のいずれか一項に記載の光モジュールの実装構造。
- 前記リッド部品および前記第1の磁性部品の少なくとも一方は、その表面積を増加させた放熱構造を有していることを特徴とする請求項2から請求項5のいずれか一項に記載の光モジュールの実装構造。
- 前記第1の磁性部品は、複数の前記第1の光コネクタと連結されていることを特徴とする請求項1から請求項6のいずれか一項に記載の光モジュールの実装構造。
- 前記第1の磁性部品の一部が、前記光モジュールが搭載される基板と電気的に接続する第2の基板上に搭載されることを特徴とする請求項1から請求項7のいずれか一項に記載の光モジュールの実装構造。
- 前記第1の光コネクタに収容される複数の前記第1の光導波部品は、2つ以上の前記光モジュールと光学的に接続していることを特徴とする請求項1から請求項8のいずれか一項に記載の光モジュールの実装構造。
- 前記第1の磁性部品と前記第2の磁性部品と接するように配置された軟磁性材料からなるプレート部品を備えることを特徴とする請求項1から請求項9のいずれか一項に記載の光モジュールの実装構造。
- 前記プレート部品には、接続後の前記第2の光コネクタの長手方向において、接続端と正対する方向への動きを制限するストッパ構造を備えることを特徴とする請求項10に記載の光モジュールの実装構造。
- 請求項1から請求項11のいずれか一項に記載の光モジュールの実装構造と、
基板と、
集積回路とを備える光実装ボード。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180090189.6A CN116745669A (zh) | 2021-01-12 | 2021-01-12 | 光学模块的安装结构和光学安装板 |
PCT/JP2021/000647 WO2022153354A1 (ja) | 2021-01-12 | 2021-01-12 | 光モジュールの実装構造および光実装ボード |
EP21919251.5A EP4279968A1 (en) | 2021-01-12 | 2021-01-12 | Optical module mounting structure and optical mounting board |
US18/259,451 US20240053553A1 (en) | 2021-01-12 | 2021-01-12 | Mounting structure of optical module and optical mounting board |
JP2022574875A JPWO2022153354A1 (ja) | 2021-01-12 | 2021-01-12 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2021/000647 WO2022153354A1 (ja) | 2021-01-12 | 2021-01-12 | 光モジュールの実装構造および光実装ボード |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022153354A1 true WO2022153354A1 (ja) | 2022-07-21 |
Family
ID=82447006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/000647 WO2022153354A1 (ja) | 2021-01-12 | 2021-01-12 | 光モジュールの実装構造および光実装ボード |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240053553A1 (ja) |
EP (1) | EP4279968A1 (ja) |
JP (1) | JPWO2022153354A1 (ja) |
CN (1) | CN116745669A (ja) |
WO (1) | WO2022153354A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024101381A1 (ja) * | 2022-11-09 | 2024-05-16 | 株式会社白山 | 光コネクタ着脱治具及び着脱方法 |
WO2024101389A1 (ja) * | 2022-11-09 | 2024-05-16 | 株式会社白山 | 光コネクタ、光モジュール、プラグおよび接続方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58209705A (ja) * | 1982-05-31 | 1983-12-06 | Nippon Telegr & Teleph Corp <Ntt> | 自己整合形多心光コネクタ |
JP2001215362A (ja) * | 2000-01-31 | 2001-08-10 | Nec Eng Ltd | 光ファイバコネクタ |
JP2007271831A (ja) * | 2006-03-30 | 2007-10-18 | Kyocera Corp | 光接続構造およびそれを用いた光電気モジュール、並びに光導波路ユニット |
WO2014010035A1 (ja) * | 2012-07-11 | 2014-01-16 | 株式会社日立製作所 | 光コネクタおよび光コネクタを用いたサーバー |
JP2014067835A (ja) * | 2012-09-25 | 2014-04-17 | Japan Oclaro Inc | 光モジュール |
US10374373B1 (en) * | 2018-03-21 | 2019-08-06 | Chi-Wei Lo | Connector fixing structure |
-
2021
- 2021-01-12 EP EP21919251.5A patent/EP4279968A1/en active Pending
- 2021-01-12 CN CN202180090189.6A patent/CN116745669A/zh active Pending
- 2021-01-12 WO PCT/JP2021/000647 patent/WO2022153354A1/ja active Application Filing
- 2021-01-12 JP JP2022574875A patent/JPWO2022153354A1/ja active Pending
- 2021-01-12 US US18/259,451 patent/US20240053553A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58209705A (ja) * | 1982-05-31 | 1983-12-06 | Nippon Telegr & Teleph Corp <Ntt> | 自己整合形多心光コネクタ |
JP2001215362A (ja) * | 2000-01-31 | 2001-08-10 | Nec Eng Ltd | 光ファイバコネクタ |
JP2007271831A (ja) * | 2006-03-30 | 2007-10-18 | Kyocera Corp | 光接続構造およびそれを用いた光電気モジュール、並びに光導波路ユニット |
WO2014010035A1 (ja) * | 2012-07-11 | 2014-01-16 | 株式会社日立製作所 | 光コネクタおよび光コネクタを用いたサーバー |
JP2014067835A (ja) * | 2012-09-25 | 2014-04-17 | Japan Oclaro Inc | 光モジュール |
US10374373B1 (en) * | 2018-03-21 | 2019-08-06 | Chi-Wei Lo | Connector fixing structure |
Non-Patent Citations (2)
Title |
---|
RYO NAGASEYOSHITERU ABEMITSURU KIHARA: "History of Fiber Optic Physical Contact Connector for Low Insertion and High Return Losses", PROC. IEEE HISTORY OF ELECTROTECHNOLGY CONFERENCE (HISTELCON, 2017 |
TETSUOMI SOGAWAS: "Basic Technologies toward the All-Photonics Network", NTT TECHNICAL REVIEW, vol. 18, no. 3, 2020 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024101381A1 (ja) * | 2022-11-09 | 2024-05-16 | 株式会社白山 | 光コネクタ着脱治具及び着脱方法 |
WO2024101389A1 (ja) * | 2022-11-09 | 2024-05-16 | 株式会社白山 | 光コネクタ、光モジュール、プラグおよび接続方法 |
Also Published As
Publication number | Publication date |
---|---|
CN116745669A (zh) | 2023-09-12 |
EP4279968A1 (en) | 2023-11-22 |
JPWO2022153354A1 (ja) | 2022-07-21 |
US20240053553A1 (en) | 2024-02-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10782474B2 (en) | Detachable optical connectors for optical chips comprising a connector support and methods of fabricating the same | |
WO2021111773A1 (ja) | 光接続部品および光接続構造 | |
CN107567593B (zh) | 用于光学模块的闩锁和电磁干扰屏蔽机构 | |
US9377594B2 (en) | Two-dimensional, high-density optical connector | |
KR101217630B1 (ko) | 광 어셈블리 | |
US9851521B2 (en) | Connectorized optical chip assembly | |
JP3329797B2 (ja) | 光電子パッケージおよび集積マウントの製造方法 | |
RU2647212C1 (ru) | Герметичная сборка для выравнивания оптического волокна | |
US11105981B2 (en) | Optical connectors and detachable optical connector assemblies for optical chips | |
WO2022153354A1 (ja) | 光モジュールの実装構造および光実装ボード | |
GB2428490A (en) | Connecting optic fibre in ferrule to collimating lens | |
JP2012009851A (ja) | アクティブ光ケーブルで使用するための民生用入力/出力(cio)光トランシーバ・モジュール及び方法 | |
EP2666044A1 (en) | An optical communications system, an optical communication module, and a method | |
JP2006030868A (ja) | 光電気複合型コネクタ及びそれを用いた基板 | |
CN101303439A (zh) | 光学组件及其形成方法 | |
US11415761B2 (en) | Optical fiber guide component, optical connection structure and method for producing same | |
Krähenbühl et al. | High-precision, self-aligned, optical fiber connectivity solution for single-mode waveguides embedded in optical PCBs | |
CN211348742U (zh) | 光学收发模块及光纤缆线模块 | |
CN112748502A (zh) | 光学收发模块及光纤缆线模块 | |
CN113419315A (zh) | 一种光模块 | |
US11385409B2 (en) | Connection structure for optical waveguide chip | |
Janta-Polczynski et al. | Towards co-packaging of photonics and microelectronics in existing manufacturing facilities | |
US8636426B2 (en) | Photoelectric conversion system with optical transceive module | |
WO2019105048A1 (zh) | 光发射次模块及光收发组件 | |
JP2006010891A (ja) | 光結合装置及びその実装構造 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21919251 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022574875 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18259451 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202180090189.6 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2021919251 Country of ref document: EP Effective date: 20230814 |