JP2019095574A - Method for assembling optical device - Google Patents

Abstract

To provide a method for assembling an optical device in which contamination on an optical coupling interface is suppressed.SOLUTION: A method for assembling an optical device includes a cleaning process in which an optical connector of an optical waveguide with an optical connector is cleaned. The optical waveguide with the optical connector is a tabular resin optical waveguide film on whose at least one end where an input-output side face in which light is input/output is formed, the optical connector is mounted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method of assembling an optical device.

  Various studies have been made on how to assemble an optical device. As a technique of this type, for example, the technique described in Patent Document 1 is known. Patent Document 1 describes an optical connector in which a flexible optical waveguide is mounted with sufficient positional accuracy, and a method of manufacturing an optical connector in which an alignment member of the optical connector and the flexible optical waveguide are integrated.

JP, 2014-41189, A

  However, as a result of the present inventor's investigation, the method of assembling the optical device of Patent Document 1 is not improved enough in terms of contamination at the optical coupling interface because the cleaning of the optical waveguide with the optical connector is not sufficient in the assembly process. It turned out that there was room.

According to the invention
Including a cleaning step of cleaning the optical connector of the optical waveguide with the optical connector,
The optical waveguide with an optical connector is a resin-made and plate-like optical waveguide film having one end on which an input / output side to which light is input / output is formed, wherein the optical connector is attached to at least one end. A method of assembling an optical device is provided.

  According to the present invention, there is provided a method of assembling an optical device in which contamination at the light coupling interface is suppressed.

(A) and (b) are flowcharts showing an example of the process flow of the method of assembling an optical device of the present embodiment. (A) is a top view which shows typically the optical waveguide with an optical connector, (b) is the model perspective view which expanded the (alpha) area | region of (a), (c) is a structure of (a) It is the schematic diagram which isolate | separated the member, (d) is a schematic diagram which shows the modification of (a). (A), (b) is process sectional drawing which shows the assembly process of an optical module typically. (A), (b) is process sectional drawing which shows the process of system connection typically.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In all the drawings, the same components are denoted by the same reference numerals, and the description thereof will be appropriately omitted. Also, the figure is a schematic view and does not match the actual dimensional ratio. In the present embodiment, as shown in FIG. However, this is conveniently defined to simply explain the relative relationship of components. Accordingly, there is no limitation on the direction of manufacture or use of a product embodying the present invention.
Further, in the present specification, the term “abbreviation” means including a range in which manufacturing tolerances, assembly variations, and the like are taken into consideration, unless explicitly described.

An overview of the method of assembling the optical device of the present embodiment will be described.
The assembling method of the optical device of the present embodiment includes a cleaning step of cleaning the optical connector of the optical waveguide with the optical connector. The optical waveguide with an optical connector used in this cleaning step is one in which an optical connector is attached to at least one end of a resin-made and plate-like optical waveguide film having one end on which an input / output side face for light input / output is formed. It is.

  According to the present embodiment, in the process of assembling the optical device, contamination at the optical coupling interface between the optical waveguide film and the other optical component through the optical connector is achieved by cleaning the optical connector of the optical waveguide with the optical connector. Can be reduced. Therefore, it is possible to realize a method of assembling an optical device excellent in manufacturing stability and light coupling stability. In addition, optical defects in the optical device can be suppressed.

  Specifically, the method of assembling an optical device according to the present embodiment can be used at the time of assembly or inspection of an optical module, at the time of system connection of the optical module, at the time of maintenance thereof, or the like.

  FIG. 1 is a flow chart showing an example of the process flow of the method of assembling an optical device of the present embodiment. FIG. 1A is a flow chart for explaining the flow of assembly of the optical module. FIG. 3 is a process cross-sectional view schematically showing an assembly process of the optical module shown in FIG.

[Assembly of optical module]
An example of the method of assembling the optical device of the present embodiment includes, as shown in FIG. 1A, a cleaning step S10 and an optical waveguide mounting step S20.
The cleaning step S10 has a cleaning step of cleaning the optical connector 30 of the optical waveguide 100 with an optical connector shown in FIG. 3 (a). The specific cleaning method will be described later.
The optical waveguide mounting step S20 includes a mounting step of mounting the optical waveguide 100 with an optical connector on the optical element mounting substrate 320, as shown in FIG. 3 (b).
According to the present embodiment, by performing the optical waveguide mounting step S20 after the cleaning step S10, the optical components in the optical module 300 such as the optical waveguide film 10 and the optical path conversion member 340 via the optical connector 30. It is possible to reduce contamination at the light coupling interface with Thereby, the optical module 300 (optical device) with reduced optical defects can be realized.

  The outline | summary of the optical waveguide with an optical connector 100 used for the said cleaning process S10 is demonstrated using Fig.2 (a)-(c). FIG. 2 (a) is a top view schematically showing the optical waveguide 100 with an optical connector, and FIG. 2 (b) is a schematic perspective view enlarging the α region in FIG. 2 (a). c) is the schematic diagram which isolate | separated the structural member of Fig.2 (a).

  As shown in FIG. 2 (c), the optical waveguide 100 with an optical connector shown in FIG. 2 (a) includes optical connectors 30 at both ends (one end 20 and the other end 22) of the optical waveguide 100 with a plate-like optical connector. Is worn. An incident / emission side surface 16 is formed at one end 20 and the other end 22. The elastic member 70 formed at the tip 46 of the optical connector 30 covers the incident / emission side surface 16 formed at the end (one end 20, the other end 22) of the optical waveguide film 10, as shown in FIG. 2 (b). Configured as. The elastic member 70 elastically deforms at the optical connection interface when the optical waveguide film 10 is optically connected to another optical component through the optical connector 30, and compared with the case where the optical waveguide film 10 is directly bonded by its cushion function. A stable light coupling efficiency can be realized with the optical component. Further, air can be removed from the optical bonding interface, and adhesion of foreign matter such as dust to the interface can be suppressed.

The cleaning step S10 is for cleaning the elastic member 70 formed at the tip of the optical connector 30. The elastic member 70 has slight adhesiveness, and foreign substances such as dust and dirt are easily attached. However, by cleaning the surface of the elastic member 70 in advance, the elastic member 70 and the optical waveguide film 10 can be used. Foreign matter can be suppressed from mixing into the optical coupling interface with other optical components.
The elastic member 70 may be in the form of a paste or a film.

The flow of assembly of the optical module using the optical waveguide 100 with an optical connector will be described based on FIG.
First, as shown in FIG. 3A, the optical waveguide with an optical connector 100 and the optical module are prepared. In terms of condition, the connection adapter 60 is attached to the optical connector 30 at one end 20 side of the optical waveguide 100 with the optical connector, the elastic member 70 a is not exposed, and the optical connector 30 at the other end 22 is The elastic member 70b is exposed. One of the optical modules includes a housing 310, an optical element mounting substrate 320 provided on the housing 310, an optical element 330 provided on the optical element mounting substrate 320, and an optical path conversion member optically connecting to the optical element 330. And 340.

  Subsequently, the elastic member 70 (at least the elastic member 70b in contact with the optical component in the optical module) in the optical connector 30 of the optical waveguide 100 with an optical connector is cleaned (cleaning step S10). Specifically, the surface of the elastic member 70b is cleaned. Thereafter, as shown in FIG. 3B, the optical waveguide film 10 and the optical path conversion member 340 (lens component) are optically connected via the optical connector 30 and the elastic member 70b (optical waveguide mounting step S20). Thereby, the optical module 300 in which the optical waveguide 100 with the optical connector is mounted on the optical element mounting substrate 320 is obtained.

  The optical module 300 of FIG. 3B is an example of the QSFP, but is not limited to this and can be applied to other known optical modules.

  In addition, before the cleaning step S10, as shown in FIG. 2D, a step of attaching a detachable protective cap (cap 80) to the tip of the optical connector 30 can be performed. Subsequently, the cleaning step S10 is performed, and the step of removing the cap 80 from the optical connector 30 can be performed before the optical waveguide mounting step S20 is performed. Thereby, after preparing the optical waveguide 100 with an optical connector, it can suppress that a foreign material adheres to the optical connector 30 or the elastic member 70, before implementing optical waveguide mounting process S20, such as a packing and a conveyance process.

  In addition, performance inspection may be performed on the optical module 300 before or after shipment. At the time of the performance inspection of the optical module 300, that is, after the optical waveguide mounting step S20, the cleaning step S10 may be performed again. At this time, in the cleaning step S10, the optical connector 30 on one end 20 side different from the other end 22 side connected to the optical component in the optical module 300 is cleaned. Specifically, the optical connector 30 in the connection adapter 60 and the elastic member 70a provided at the tip thereof are cleaned.

  Here, the connection adapter 60 enables connection with another connector that is not compatible with the optical connector 30, and can be detachably attached to the optical connector 30. The connection port of the connection adapter 60 is provided outside the housing 310 of the optical module 300, and thus facilitates optical connection with other optical components such as an optical fiber.

[System connection]
Next, system connection using the optical module 300 will be described based on FIGS. 1 (b) and 4. FIG. 1 (b) is a flow chart for explaining the flow of system connection of the optical module. FIG. 4: is process sectional drawing which shows typically the process of the system connection shown in FIG.1 (b).

  Another example of the method of assembling the optical device of the present embodiment includes, as shown in FIG. 1B, a cleaning step S30 and a system connection step S40.

  The cleaning step S30 is performed again after the optical waveguide mounting step S20, and also uses a cleaning method which is the same as or different from the cleaning step S10. In the cleaning step S30, as shown in FIG. 4A, the tip of the optical connector 30 and the surface of the elastic member 70a are cleaned from the connection port of the connection adapter 60 provided outside the optical module 300.

In the system connection step S40 (connection step), after the cleaning step S30, the optical fiber 410 is connected to the optical connector 30 of the optical waveguide 100 with the optical connector to optically couple the optical waveguide film 10 with the optical fiber 410. In the system connection step S40, as shown in FIG. 4B, the optical waveguide film 10 and the optical fiber 410 (optical components for external connection in the system via the optical connector 30, the elastic member 70a, the connection adapter 60 and the optical connector 420) ) And optical connection. Thereby, the system 400 (optical device) in which the light module 300 is incorporated can be realized.
According to the present embodiment, foreign matter is mixed into the optical coupling interface between the optical waveguide film 10 and the optical fiber 410 through the elastic member 70 a by cleaning the surface of the elastic member 70 a and the inside of the optical connector 30 in advance. Can be suppressed.

  In addition, the system 400 needs to be regularly maintained. At this time, after the system connection step S40, the removal step of removing the optical fiber 410 from the optical connector 30, the cleaning step S30 again, and the connection step (system connection step S40) again are performed in this order. That is, the cleaning process of the present embodiment may be performed at the time of maintenance. As a result, foreign matter adhering to the light coupling interface can be removed, so that reduction in light loss in the system 400 can be suppressed.

  Hereinafter, the optical waveguide film 10 and the optical connector 30 will be described, and then a specific cleaning method of the cleaning process will be described in detail.

[Optical waveguide film]
The optical waveguide film 10 is, for example, a resin optical waveguide containing a resin. The resin optical waveguide has a structure in which a plurality of resin layers are stacked. For example, the optical waveguide film 10 has a plate shape, that is, a sheet shape, and in the optical waveguide film 10, a cladding layer, a core layer, and a cladding layer are laminated in this order in the thickness direction. The plate-like optical waveguide film 10 has two main surfaces parallel to each other.
In the present specification, the peripheral surface other than the main surface of the optical waveguide film 10 is referred to as the “side surface”. The side surface of the light guide film 10 is, for example, substantially perpendicular to the main surface of the light guide film 10.

  For example, when the optical waveguide film 10 is viewed in the direction perpendicular to the main surface, one or more cores are formed in a pattern in the core layer, and the extending direction of the cores, ie, the longitudinal direction In contrast, it is long.

  In the optical waveguide film 10, light propagates in the core. Then, two or more input and output parts are formed on the surface of the light guide film 10. At each input / output unit, at least one of light input and output to the core is performed. At least one may be provided on the side surface, and the others may be provided on the main surface of the optical waveguide film 10 or may be provided on the other side surface.

The planar shape of the optical waveguide film 10 is not particularly limited, and may be designed according to the application and the like.
The optical waveguide film 10 of an example has a long rectangular shape, as shown to Fig.2 (a). An incident / emission side surface 16 (in / out portion) is formed on each of the one end 20 and the other end 22.

The optical waveguide film 10 of the modified example has an entrance / exit side surface 16 at one end 20 and a wide portion at the other end 22. When viewed in the direction perpendicular to the main surface of the light guide film 10, the width of the wide portion is wider than the width of the other portions. A groove is formed in at least one (surface) of the main surface of the wide portion as an entering / exiting portion. The groove functions as a mirror that performs optical path conversion of an optical signal passing through the core.
The optical waveguide film 10 of the other modification may have a branched structure (two-forked shape, three-forked shape, etc.) branched in plural from one end 20 to the other end 22. The light guide film 10 may have a plurality of incident and exit side surfaces 16 and a plurality of incident and exit side surfaces 16.

  The optical waveguide film 10 is made of, for example, acrylic resin, methacrylic resin, polycarbonate, polystyrene, cyclic ether resin such as epoxy resin or oxetane resin, polyamide, polyimide, polybenzoxazole, polysilane, polysilazane, silicone resin , Fluorocarbon resin, polyurethane, polyolefin resin, polybutadiene, polyisoprene, polychloroprene, polyester such as PET and PBT, polyethylene succinate, polysulfone, polyether, cyclic such as benzocyclobutene resin and norbornene resin It contains one or more resins selected from the group consisting of olefin resins and phenoxy resins.

[Optical connector]
The optical connector 30 is attached to at least one end 20 of the optical waveguide film 10. The other end 22 of the optical connector 30 may or may not have the optical connector 30. The optical connectors 30 mounted at both ends may be the same type or different types.

  The optical connector 30 is fixed to the optical waveguide film 10 by a known method. For example, as shown in FIG. 2B, in the state where one end 20 of the optical waveguide film 10 is inserted into the opening 32 of the optical connector 30, these are fixed. Specifically, bonding may be performed by chemical means using various adhesives such as a photocurable adhesive, a thermosetting adhesive and an anaerobic adhesive, or pressing on the inner wall of the opening 32 of the optical connector 30 May be joined by physical means. When an adhesive is used, the surface of one end 20 of the optical waveguide film 10 and the upper surface of the inner wall of the opening 32 of the optical connector 30 may be fixed with an adhesive, and the back surface 12 and the lower surface of the inner wall are It may be fixed via an adhesive. A space may be formed between the side surface of the optical waveguide film 10 and the side surface of the inner wall of the opening 32 of the optical connector 30 from the viewpoint of reducing damage to the optical waveguide film 10.

  The optical connector 30 may be, for example, an MT connector, an MPO connector, an MPX connector, a PMT connector, a PT connector, or a connector compatible with these. A guide hole 90 may be formed in the optical connector 30, as shown in FIG. 2 (b). When the optical connector 30 is connected to another connector or the like, the guide pin is inserted into the guide hole 90, whereby accurate alignment with the connection target is achieved.

As shown in FIG. 2 (b), the optical connector 30 has a substantially rectangular parallelepiped ferrule body 40 accommodating one end 20 of the optical waveguide film 10 and a rear end portion of the ferrule body 40 from the outer peripheral surface of the ferrule body 40. And the ridge portion 50 formed to project outward. The flange portion 50 has a projecting structure that protrudes beyond the side surface and / or the main surface (upper surface, back surface) of the ferrule body 40. The ferrule body 40 may have a projection 36 a portion of which protrudes from the tip 46. At this time, the surface of the elastic member 70 may protrude more than the protrusion 36.
In addition, although the optical connector 30 may be comprised by one member, it may be comprised by the assembly member which combined the several member.

  The ferrule main body 40 and the flange portion 50 can have various shapes, for example, a cubic shape or a rectangular solid shape. The ferrule main body 40 and the flange portion 50 are made of a known resin material, but are made of, for example, a resin harder than the optical waveguide film 10.

[Cleaning process]
The cleaning process in the method of assembling the optical device of the present embodiment uses one or more devices selected from the group consisting of an adhesive type cleaning tool, a wiping type cleaning tool, an air blow tool, and a cleaning liquid application tool.

(Adhesive cleaning tool)
The above-mentioned adhesive type cleaning tool is provided with the adhesive cleaning part which has adhesiveness on the surface, and the holding part which holds this adhesive cleaning part.

  The adhesion cleaning unit is formed of a member having a slight adhesion, and thus can adsorb foreign substances such as dust. Since the foreign matter can be collected without rubbing the cleaning surface, the cleaning surface can be prevented from being scratched or damaged. By setting the adhesion to be slightly smaller than the adhesion between the optical connector 30 and the elastic member 70, breakage of the elastic member 70 can be suppressed.

  Moreover, since the adhesion cleaning part is comprised by the member which can be elastically deformed, it can suppress that local stress generate | occur | produces in a cleaning surface, and can prevent the failure | damage. Since deformation is possible along the uneven surface at the tip of the optical connector 30, it is possible to suppress variation in the cleaning state of the uneven surface. In addition, even when the guide pin is inserted into the guide hole 90, the guide pin can be inserted into the adhesive cleaning portion. For this reason, even when the end of the optical connector 30 has irregularities or protrusions, the surface of the elastic member 70 or the end face (the incident / emission side surface 16) of the optical waveguide film 10 can be in contact with the surface of the adhesive cleaning portion.

  The surface of the adhesion cleaning part may have a planar shape from the viewpoint of widening the cleaning area, but may have a curved surface shape from the viewpoint of enhancing foreign matter adsorption.

  For example, an adhesive such as an acrylic material, an epoxy material, or a silicone material is used as a member having a slight adhesiveness and an elastic deformability. In the adhesive, additives such as a tackifier and a filler may be appropriately blended, for example, according to the purpose.

  The holding part of the adhesive type cleaning tool may be a long rod member from the viewpoint of easy handling, or may be a plate tray from the viewpoint of a large area cleaning surface, and may be wound from the viewpoint of surface cleanliness maintenance. It can be comprised by the storage case which accommodates the film-like adhesive cleaning part (tape) which can be taken inside. Specifically, the adhesive cleaning tool as described above accommodates a film-like adhesion cleaning part and a film-like adhesion cleaning part which can be wound so that the surface is on the outside, and a part of the surface is And a storage case having an exposed opening. By the winding operation, the surface of the unused adhesive cleaning portion is exposed. The tape is replaceable and replaceable and easy to throw away.

  Adhesive cleaners may be used with guide jigs to reduce the pressure on unintended cleaning surfaces.

  The adhesive cleaning tool can be used repeatedly by cleaning the surface of the adhesive cleaning unit after the cleaning process. For washing, for example, pure water, an organic solvent such as ethanol or acetone, or a washing solution such as an aqueous solution containing a surfactant is used.

(Wipe-off cleaning tool)
The above-mentioned wiping type cleaning tool is provided with a porous cleaning part made of a porous material and a holding part which holds this porous cleaning part. By wiping (scrubbing) the cleaning surface on the surface of the porous cleaning portion, foreign matter such as dust can be adsorbed.

  As the porous material, a fiber material or a resin material such as foamed polyurethane is used. The fiber material is flexible and it is preferred to use relatively long fibers. It is possible to suppress the short fibers from remaining on the cleaning surface.

  The porous cleaning portion may be used in a wet state or a dry state depending on the material of the light guide film 10 and the elastic member 70. For example, a porous cleaning part wetted with a quick-drying cleaning liquid such as ethanol can be used for the cleaning step. By cleaning, the wiping type cleaning tool is used repeatedly.

  The holding portion of the wiping type cleaning tool may be constituted by a long-axis shaped bar member from the viewpoint of easy handling. The holding portion has a storage portion capable of storing the cleaning liquid provided to the rod member, is formed inside the rod member, and is communicated from the storage portion to the porous cleaning portion held at the tip of the rod member It may have a guide opening. As a result, cleaning efficiency can be enhanced because the porous cleaning portion can be appropriately filled with the cleaning solution.

  The wiping type cleaning tool is stored in a multi-capacity accommodating case, and can be taken out and used at the time of use.

(Air blow equipment)
The air blow apparatus has an injection nozzle for injecting the compressed cool gas (cleaning gas). The cleaning gas ejected from the tip of the nozzle can remove foreign matter on the cleaning portion (the surface of the elastic member 70 or the inside of the opening 32 of the optical connector 30). At this time, the elastic member 70 is preferably in the form of a film in which the adhesiveness is reduced more than in the form of paste. As a result, foreign substances on the surface of the elastic member 70 can be easily removed by the cleaning gas. The use of an air blowing device reduces waste during cleaning as compared to using a disposable device.

  It is preferable to properly adjust the injection nozzle so that the cleaning gas is ejected substantially perpendicularly to the surface (cleaning surface) of the elastic member 70. For example, the cleaning gas is injected in a state where the injection surface of the injection nozzle and the cleaning surface are parallel to each other. Thereby, breakage of the elastic member 70 can be suppressed.

  As a cleaning gas, a gas used for a known OA cleaner or the like is used, but for example, a compressed gas containing a volatile liquid may be used.

After cleaning with the above-mentioned cleaning liquid, it can be cleaned by the cleaning gas using the above-mentioned air blow tool. Thereby, a greater cleaning effect can be obtained. At this time, the cleaning liquid jetted to the cleaning surface is sucked by the suction nozzle. As a result, it is possible to suppress contamination of the area other than the cleaning surface with the cleaning liquid. The injection nozzle may have not only the cleaning gas but also the above-mentioned air blow apparatus that can eject the cleaning gas including the cleaning liquid.
The air blowing device may be configured as a portable and portable device.

(A cleaning fluid supply device)
The cleaning solution applying device has a discharge nozzle for discharging the cleaning solution.
As the cleaning liquid, although the above-described one may be used, a liquid in which the elastic member 70 is easily wettable can be selected. As such a liquid, an aqueous solution in which a solvent or a neutral detergent is dissolved in water can be used. Thus, foreign matter on the surface of the elastic member 70 can be floated and removed. At this time, removal of foreign matter can be promoted by applying ultrasonic vibration. The discharge nozzle may have ultrasonic vibration capability. Since the cleaning liquid can be cleaned, damage on the cleaning surface can be suppressed.

  By causing the cleaning liquid discharged from the discharge nozzle to flow inside the opening 32 of the optical connector 30, foreign matter can be removed. The cleaning solution can be made to flow by continuous discharge and repetition of discharge and suction. After cleaning with the cleaning liquid, the cleaning surface may be dried. The cleaning solution applicator may have a drying nozzle having a drying function in addition to the discharge nozzle. After washing with the washing liquid using the washing liquid application device, the washing liquid can be dried. The cleaning efficiency can be enhanced by performing the cleaning with the cleaning solution and the drying thereof in a series of steps. In addition, contamination by the cleaning solution can be suppressed.

  The cleaning solution applicator may have a tank for storing the cleaning solution. The tank may be configured with a refillable cartridge type. The cleaning solution applicator may be battery-powered and portable.

  Further, the cleaning solution applying device may be configured by a syringe capable of sucking and discharging the cleaning solution. The discharge nozzle of the dropper has a capillary structure, and at its tip end has a member (for example, a brush) that is relatively softer than the elastic member 70. As a result, it is possible to suppress damage to the cleaning surface due to the tip while cleaning with a small amount of cleaning liquid.

  As mentioned above, although the present invention was concretely explained based on an embodiment, these are illustration of the present invention and various composition except the above can also be adopted.

DESCRIPTION OF SYMBOLS 10 optical waveguide film 16 input-output side 20 one end 22 other end 30 optical connector 32 opening 36 protrusion 40 ferrule main body 46 tip 50 flange 60 connection adapter 70 elastic member 70a elastic member 70b elastic member 80 cap 90 guide hole 100 optical connector Optical waveguide 300 Optical module 310 Housing 320 Optical element mounting substrate 330 Optical element 340 Optical path conversion member 400 System 410 Optical fiber 420 Optical connector S10 Cleaning process S20 Optical waveguide mounting process S30 Cleaning process S40 System connection process

Claims (20)

Including a cleaning step of cleaning the optical connector of the optical waveguide with the optical connector,
The optical waveguide with an optical connector is a resin-made and plate-like optical waveguide film having one end on which an input / output side to which light is input / output is formed, wherein the optical connector is attached to at least one end. How to assemble an optical device. A method of assembling an optical device according to claim 1, wherein
The method of assembling an optical device, wherein the optical waveguide with the optical connector is an elastic member formed at the tip of the optical connector so as to cover the incident / emission side of the optical waveguide film. A method of assembling an optical device according to claim 2, wherein
A method of assembling an optical device, wherein the cleaning step is for cleaning the elastic member formed at the tip of the optical connector. A method of assembling an optical device according to any one of claims 1 to 3,
A method of assembling an optical device, comprising a mounting step of mounting the optical waveguide with an optical connector on an optical element mounting substrate after the cleaning step. A method of assembling an optical device according to claim 4.
Attaching a removable protective cap to the tip of the optical connector;
Removing the protective cap from the optical connector before performing the mounting step. A method of assembling an optical device according to claim 4 or 5,
After the mounting step, after the cleaning step is performed again, an optical fiber is connected to the optical connector of the optical waveguide with the optical connector, and a connecting step of optically coupling the optical waveguide film and the optical fiber How to assemble the device. A method of assembling an optical device according to claim 6.
A method of assembling an optical device, comprising the step of removing the optical fiber from the optical connector, the step of cleaning again, and the step of connecting again in this order after the connecting step. A method of assembling an optical device according to any one of claims 1 to 7,
The method of assembling an optical device, wherein the optical connector is a kind selected from the group consisting of an MT connector, an MPO connector, an MPX connector, a PMT connector, a PT connector, and a connector compatible with them. A method of assembling an optical device according to any one of claims 1 to 8,
A method of assembling an optical device, wherein the cleaning step uses one selected from the group consisting of an adhesive type cleaning tool, a wiping type cleaning tool, an air blow tool, and a cleaning liquid application tool. A method of assembling an optical device according to claim 9.
The method for assembling an optical device, wherein the adhesive cleaning tool includes an adhesive cleaning unit having adhesiveness on the surface. A method of assembling an optical device according to claim 10.
The adhesive cleaning tool is
A film-like adhesion cleaning unit which can be wound so that the surface is on the outside;
A method of assembling an optical device, comprising: a storage case that accommodates the film-like adhesion cleaning portion and includes an opening that exposes a portion of the surface. A method of assembling an optical device according to claim 9.
A method of assembling an optical device, wherein the wiping type cleaning tool comprises a porous cleaning portion made of a porous material. A method of assembling an optical device according to claim 12.
The wiping type cleaning tool includes a holding unit for holding the porous cleaning unit,
The holding unit is
A rod member for holding the porous cleaning portion at its tip;
A reservoir for storing the cleaning solution;
The rod member is internally formed, and has a guide port communicating with the storage part to the tip of the rod member.
How to assemble an optical device. A method of assembling an optical device according to claim 13.
The method of assembling an optical device, wherein the cleaning solution has quick drying properties. A method of assembling an optical device according to claim 9.
A method of assembling an optical device, wherein the air blowing device comprises an injection nozzle for injecting compressed cleaning gas. A method of assembling an optical device according to claim 15.
A method of assembling an optical device, wherein the cleaning gas is injected by using the air blow tool with the injection surface of the injection nozzle and the cleaning surface parallel to each other. A method of assembling an optical device according to claim 15 or 16.
A method of assembling an optical device, wherein the cleaning gas is a compressed gas containing a volatile liquid. A method of assembling an optical device according to claim 9.
The method for assembling an optical device, wherein the cleaning liquid deposition tool includes a discharge nozzle that discharges the cleaning liquid. A method of assembling an optical device according to claim 18.
The method of assembling an optical device, wherein the discharge nozzle has ultrasonic vibration capability. A method of assembling an optical device according to claim 18 or 19,
The cleaning solution applying device has a drying nozzle for drying the discharged cleaning solution,
A method of assembling an optical device, wherein the cleaning solution is cleaned after being cleaned with the cleaning solution using the cleaning solution applying device.

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