WO2015012183A1 - 光部品組立体、光レセプタクル、および光通信用送受信モジュール - Google Patents
光部品組立体、光レセプタクル、および光通信用送受信モジュール Download PDFInfo
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- WO2015012183A1 WO2015012183A1 PCT/JP2014/068998 JP2014068998W WO2015012183A1 WO 2015012183 A1 WO2015012183 A1 WO 2015012183A1 JP 2014068998 W JP2014068998 W JP 2014068998W WO 2015012183 A1 WO2015012183 A1 WO 2015012183A1
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- WIPO (PCT)
- Prior art keywords
- optical
- shell
- component assembly
- cylindrical member
- sleeve
- Prior art date
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Classifications
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
- G02B6/4208—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback using non-reciprocal elements or birefringent plates, i.e. quasi-isolators
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators
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- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3846—Details of mounting fibres in ferrules; Assembly methods; Manufacture with fibre stubs
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- G02B6/24—Coupling light guides
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- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
- G02B6/387—Connector plugs comprising two complementary members, e.g. shells, caps, covers, locked together
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- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
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- G02B6/3894—Screw-lock type
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- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4207—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms with optical elements reducing the sensitivity to optical feedback
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- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
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- 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
- G02B6/4262—Details of housings characterised by the shape of the housing
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- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- G02B6/3891—Bayonet type
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/02—Feature extraction for speech recognition; Selection of recognition unit
- G10L2015/025—Phonemes, fenemes or fenones being the recognition units
Definitions
- the present invention relates to an optical component assembly used for a connection portion between optical fibers, an optical receptacle using the optical component assembly, and a transmission / reception module for optical communication provided with these and a light emitting element or a light receiving element. is there.
- an optical communication transceiver module In optical fiber bidirectional communication, an optical communication transceiver module is used. 2. Description of the Related Art
- An optical communication transceiver module accommodates an optical transceiver circuit including a light emitting element such as an LD (laser diode) or a light receiving element such as a PD (photodiode) in a small package. Further, the transceiver module for optical communication includes an optical receptacle part attached to a housing of a small package. By connecting an optical fiber to this optical receptacle, it is possible to communicate with the other optical communication transceiver module.
- LD laser diode
- PD photodiode
- FIG. 7 shows a schematic cross-sectional structure of a conventional transceiver module for optical communication.
- a conventional optical communication transceiver module 50 includes an optical receptacle 30 and an optical element unit 40.
- the optical element unit 40 accommodates an optical element 41 such as a light emitting element such as an LD or a light receiving element such as a PD in a housing constituted by an element holder 42 and an element cover 43.
- the optical element unit 40 is fixed to the holder 37 of the optical receptacle 30 via the alignment adapter 44.
- the optical receptacle 30 includes a fiber stub 34, a sleeve 35, a sleeve case 36, and a holder 37.
- a fiber stub 34 an optical fiber is inserted at the center axis position.
- the holder 37 holds the fiber stub 34 inside, and covers the lower outer peripheral surface of the sleeve 35 to hold the sleeve 35.
- the sleeve case 36 is fixed to the holder 37 so as to cover the sleeve 35.
- the ferrule in the optical connector is guided by the sleeve 35, and the front end surface of the ferrule and the front end surface of the fiber stub 34 are brought into contact with each other with the center axis aligned. It is like that. As a result, the optical fiber in the ferrule and the optical fiber in the fiber stub 34 are brought into contact with each other, and the optical signal is connected.
- the sleeve case 36 of the optical receptacle 30 is formed of a resin molded product.
- the sleeve case 36 is formed with a slit-shaped fitting hole 36a extending in the circumferential direction at the lower portion.
- the holder 37 is provided with a fitting claw 37a to be fitted into the fitting hole 36a.
- the sleeve case 36 is fixed to the holder 37 by pressing the sleeve case 36 and fitting the fitting holes 36 a and the fitting claws 37 a together.
- the sleeve case 36 is made of resin, the sleeve case 36 does not become a noise antenna. Further, it can be manufactured at a low price and can be easily assembled.
- the conventional optical receptacle 30 cannot sufficiently cope with the entry of foreign matter, and if foreign matter such as dust enters inside the sleeve case 36 and the sleeve 35, the optical axis alignment between the counterpart ferrule and the fiber stub 34 is out of order. Therefore, there are cases where the optical connection is hindered. In addition, if a foreign object is caught between the optical fiber of the counterpart ferrule and the optical fiber of the fiber stub 34, a situation may arise in which the optical signal cannot be connected.
- an object of the present invention is to provide an optical component assembly for an optical receptacle and an optical receptacle that can easily recover from deterioration of connection performance due to foreign matter or the like.
- An optical component assembly includes a light guide member and a cylindrical member that holds the light guide member in the through hole.
- One end of the cylindrical member is provided with a protrusion that protrudes from the outer peripheral surface and engages with a groove that is bent in the circumferential direction from the axial direction provided in the cylindrical shell.
- the protrusions may be arranged at two or more positions symmetrical with respect to the central axis of the cylindrical member.
- the protrusion is provided on a side surface of a protruding portion protruding from one end surface of the cylindrical member.
- At least a part of the rear end surface of the light guide member is an inclined surface, and the inclination direction of the inclined surface and the protruding direction of the protrusion have a certain positional relationship. Is good.
- an optical isolator may be disposed on the optical path of the light guide member.
- the protruding direction of the protrusion and the direction of the polarization plane of the light transmitted through the optical isolator or the direction of the polarization plane of the blocked light have a fixed positional relationship.
- the light guide member may be a fiber stub in which an optical fiber is inserted through a ferrule.
- An optical receptacle covers the optical component assembly, a sleeve disposed at a distal end portion of the light guide member, an outer surface of the sleeve, and a peripheral end from the axial direction at the rear end portion. And a cylindrical shell having a groove bent in a direction and fixed by engaging the groove with the protrusion.
- the rear end surface of the sleeve is in contact with the front end surface of the protruding portion, and that there is a gap between the rear end surface of the sleeve and one end surface of the cylindrical member.
- the optical receptacle it is preferable that there is a gap between the outer peripheral surface of the cylindrical member and the inner peripheral surface of the shell.
- the circumferential portion of the groove is an inclined groove that is farther from the rear end face of the shell as it goes from the portion connected to the axial groove toward the distal side.
- the shell is provided with an identifiable marking.
- the marking is preferably in a color different from the appearance color of the shell.
- the marking is based on an inscription applied to the shell.
- the marking is made of a color colored on the shell.
- An optical communication transceiver module includes any one of the optical receptacles described above, and an optical communication package that houses an optical element therein and is fixed to the cylindrical member.
- An optical communication transceiver module includes any one of the optical component assemblies described above, and an optical communication package that houses an optical element therein and is fixed to the cylindrical member. .
- the optical component assembly includes a light guide member, a cylindrical member that holds the light guide member in the through hole, and an outer peripheral surface at one end of the cylindrical member. And a projection that engages with a groove that is bent in the circumferential direction from the axial direction provided on the cylindrical shell, so that the cylindrical shell can be easily attached and detached, exposing the light guide member, and The optical component assembly can be easily removed.
- the cylindrical shell when the protrusions are arranged at two or more positions symmetrical with respect to the central axis of the cylindrical member, the cylindrical shell can be fixed stably.
- the protrusion when the protrusion is provided on the side surface of the protruding portion protruding from the one end surface of the cylindrical member, the protrusion can be easily processed with high processing accuracy.
- the rear end surface is an inclined surface, and when the inclined direction of the inclined surface and the protruding direction of the protrusion have a certain positional relationship, The inclination direction of the inclined surface can be distinguished by the protruding direction of the protrusion.
- the optical path of the optical component assembly when an optical isolator is disposed on the optical path of the light guide member, the optical path of the optical component assembly can be an optical path through which an optical signal in one direction passes.
- the protrusion direction of the protrusion and the direction of the polarization plane of the light transmitted through the optical isolator or the direction of the polarization plane of the blocked light have a certain positional relationship
- the protrusion direction of the protrusion thus, the direction of the polarization plane of the optical isolator can be identified and fixed, and the optical component assembly can be easily assembled.
- the connection characteristics can be improved.
- the optical component assembly the sleeve disposed at the front end portion of the light guide member, the outer surface of the sleeve is covered, and the rear end portion is viewed from the axial direction. Since it has a groove that bends in the circumferential direction and has a cylindrical shell fixed by engaging this groove with a protrusion, it is possible to provide an optical receptacle that allows easy removal of foreign matter by removing the shell. .
- the optical receptacle when the rear end surface of the sleeve is in contact with the front end surface of the projecting portion and there is a gap between the rear end surface of the sleeve and one end surface of the cylindrical member, the optical receptacle can be easily attached and detached. It can be.
- the optical receptacle described above when there is a gap between the outer peripheral surface of the cylindrical member and the inner peripheral surface of the shell, the optical receptacle can be reduced in light output fluctuation.
- the circumferential portion of the groove is an inclined groove that is farther from the rear end face of the shell as it goes from the portion connected to the axial groove to the distal side, the shell is firmly fixed.
- the optical receptacle can be made.
- the optical receptacle when an identifiable marking is attached to the shell, for example, the optical receptacle can be determined according to the purpose of use.
- the optical receptacle when the marking is in a color different from the appearance color of the shell, the optical receptacle can be discriminated by printing or the like, for example.
- the optical receptacle when the marking is based on the marking applied to the shell, the optical receptacle can be discriminated by the marking.
- the optical receptacle when the marking is based on the color colored on the shell, the optical receptacle can be discriminated by the color of the shell.
- the optical communication transmission / reception module for optical communication according to an embodiment of the present invention, since any one of the optical receptacles or the optical component assembly described above is provided, the optical communication transmission / reception module can be easily removed.
- FIG. 1 is a partially exploded side view of an optical component assembly and an optical receptacle according to an example of an embodiment of the present invention. It is sectional drawing which shows an example of embodiment of the transmission / reception module for optical communications of this invention. It is a perspective view which shows the other example of embodiment of the optical component assembly of this invention. It is sectional drawing for demonstrating the optical output fluctuation
- FIG. 1 is an exploded perspective view showing an example of an embodiment of an optical receptacle 1 of the present invention.
- FIG. 2 is a side view showing the optical receptacle 1 before the cylindrical member 6, the light guide member (fiber stub) 4 and the sleeve 7 are assembled and the shell 8 is assembled thereto.
- FIG. 3 is a cross-sectional view of the optical communication transceiver module 3 including the optical receptacle 1 including a central axis. In FIG. 3, the details of the interior of the optical communication package 11 are omitted and hatched.
- the optical receptacle 1 includes an optical component assembly in which a light guide member 4 and a cylindrical member 6 are combined.
- the optical receptacle 1 is formed by combining a sleeve 7 and a shell 8 with this optical component assembly.
- the cylindrical member 6 is manufactured by processing metal, ceramics, resin, or the like.
- the cylindrical member 6 is a generally cylindrical member having a through hole formed in the central axis portion.
- the cylindrical member 6 includes a protrusion 6d that protrudes outward from the outer peripheral surface 6c at the end 6a.
- a flange portion having a larger outer diameter may be provided on the other end 6b side.
- the end face of one end 6 a of the cylindrical member 6 is provided with a protruding portion 6 e that protrudes in the axial direction of the cylindrical member 6.
- the side surface of the protruding portion 6e is a surface continuous with the outer peripheral surface 6c, and is formed as a part of the outer peripheral surface 6c.
- the protrusion 6d is provided to protrude outward from the outer peripheral surface 6c from the side surface of the protrusion 6e.
- the protrusion 6d may be simply protruded from the outer peripheral surface 6c on the one end 6a side of the cylindrical member 6.
- the protrusion 6e and the protrusion 6d shown in FIGS. 1 and 2 have the same shape as that obtained by cutting a portion of the surface of the end 6a of the cylindrical member 6 except the protrusion 6e downward in FIG.
- the cylindrical member 6 is processed into a flange shape having an outer periphery with the same outer diameter as the protrusion height of the protrusion 6d while rotating the cylindrical member 6 about the central axis.
- the portion excluding the protrusion 6e and the protrusion 6d is cut in the axial direction from the surface of the one end 6a.
- the protrusions 6d are preferably provided on two or more outer peripheral surfaces 6c that are symmetrical with respect to the axis of the cylindrical member 6. Moreover, when providing with two or more, it is preferable to provide in the position which divides the outer peripheral surface 6c equally. For example, when provided at three locations, it is preferably provided at the apex positions of equilateral triangles having an angle of 120 ° with respect to each other. 1 and 4 show an example in which protrusions 6d are arranged at two locations with respect to the central axis of the cylindrical member 6. FIG. As described above, the protrusions 6d are preferably provided at least at two places, and the shell 8 can be fixed stably. Further, the shell 8 can be fixed so that the inclination of the shaft is difficult to occur.
- the light guide member 4 has a function of transmitting light.
- 1, 2, and 3 show examples using the fiber stub 4, for example, a glass plate, a glass molded body, other transparent crystals, and the like may be used.
- the fiber stub 4 is obtained by inserting an optical fiber 5 from a rear end 4a to a front end 4b of a central hole of a cylindrical ferrule.
- an example in which the fiber stub 4 is used as the light guide member 4 is shown, and the light guide member 4 is also referred to as a fiber stub 4.
- the fiber stub 4 is a stub ferrule 4c in which an optical fiber 5 is inserted.
- the stub ferrule 4c is a cylindrical metal body or electrical insulator, and has a thin through hole at the center axis position.
- the optical fiber 5 is inserted through this hole over the entire length of the stub ferrule 4c.
- the rear end portion including the rear end surface 4 a of the fiber stub 4 is fixed to the inner hole of the cylindrical member 6 by press-fitting or bonding, and is held by the cylindrical member 6.
- the rear end surface 4 a of the fiber stub 4 is preferably an inclined surface that is at least partially inclined with respect to a surface orthogonal to the axis of the fiber stub 4.
- the part of the rear end surface 4 a that is the inclined surface is a surface that includes the incident / exit end surface of the optical fiber 5.
- the rear end surface 4a of the fiber stub 4 shown in FIG. 3 is an end surface of a portion protruding from the center of the end surface of the fiber stub 4, and the rear end surface 4a is an inclined surface.
- this fiber stub 4 is fixed to the cylindrical member 6, it is preferable to fix so that the inclination direction of the rear end surface 4a and the protruding direction of the protrusion 6d are in a fixed positional relationship.
- the fiber stub 4 shown in FIG. 3 is fixed so that the inclined direction of the rear end face 4a and the protruding direction of the protrusion 6d are parallel to each other. Thereby, the inclination direction of the inclined surface of the fiber stub 4 can be determined from the outside according to the protrusion direction of the protrusion 6d.
- An optical isolator 9 may be disposed on the rear end surface 4a of the fiber stub 4.
- the optical isolator element 9 is obtained by, for example, laminating a polarizer 9a, a Faraday rotator 9b, and an analyzer 9c in order.
- the polarizer 9a and the analyzer 9c are rotationally aligned so that the angle of the transmission polarization plane is 45 °, and each is bonded with an adhesive. And it cuts into the rectangular parallelepiped shape of the magnitude
- the cut optical isolator element 9 is fixed to the rear end surface 4a of the fiber stub 4 by a method such as adhesion.
- a liquid adhesive is dropped on the rear end surface 4a of the fiber stub 4, it wets and spreads on the rear end surface 4a so as to rise up roundly due to the surface tension of the adhesive.
- the optical isolator element 9 is placed thereon, the optical isolator element 9 moves to the center position of the rear end face 4a due to the surface tension of the adhesive, and the optical isolator element 9 is pressed against the rear end face 4a at that position. It is recommended that the adhesive be solidified.
- the optical isolator element 9 may be disposed on the optical path of the fiber stub 4.
- it is disposed on the rear end face 4a, but a groove that crosses the optical fiber 5 may be provided in the axial center portion of the fiber stub 4, and the optical isolator element 9 may be disposed in the groove.
- the optical isolator element 9 has an incident surface and an output surface inclined with respect to a surface perpendicular to the optical axis by a predetermined angle according to the inclination angle of the rear end surface 4a, and the side surface with respect to the optical axis. It is preferable that they are parallel parallelepipeds. Since the rear end face 4a is inclined with respect to the plane perpendicular to the optical axis, the rear end face 4a is elliptical in this case.
- the light incident surface and the light exit surface of the optical isolator element 9 may be rectangular, and for example, the long side having a predetermined angle relationship with the polarization angle may be pasted so as to be in the major axis direction of the rear end surface 4a.
- the optical isolator element 9 may be attached to the rear end face 4a so that the positional relationship between the direction of the long side and the protrusion 6d is constant.
- the angle of the polarization plane of the optical isolator element 9 can be easily determined by the protruding direction of the protrusion 6d.
- a magnet 10 that applies a magnetic field to the Faraday rotator 9 b may be disposed around the optical isolator element 9. Strictly speaking, a device obtained by adding the magnet 10 to the optical isolator element 9 may be referred to as an optical isolator 9, but in this description, such a strict distinction is not made.
- the optical component assembly thus assembled is joined to the optical communication package 11 containing the optical elements via the alignment adapters 12a and 12b, thereby completing the optical communication transceiver module of the present invention.
- position adjustment is performed so that the optical element and the optical fiber 5 are optically coupled.
- the sleeve 7 and the shell 8 may be further fixed to the optical component assembly to form the optical receptacle 1, and then joined to the optical communication package 11 containing the optical element via the alignment adapters 12a and 12b.
- the optical receptacle 1 is moved in the XYZ directions, and the alignment adapters 12a, 12b, the cylindrical member 6, and the optical communication package 11 are joined by YAG welding or the like at a position where the optical element and the optical fiber 5 are optically coupled. And fix. Thereby, the transceiver module for optical communication of the present invention is completed.
- the optical receptacle 1 is completed by attaching the sleeve 7 and the shell 8 to the optical component assembly as shown in the following example.
- the sleeve 7 has a cylindrical shape, and a rear end (lower end in FIG. 1) is put on a front end 4b (upper end in FIG. 1) of the fiber stub 4 and fixed.
- the distal end portion of the plug ferrule through which the optical fiber is inserted is inserted inside the tube on the distal end (upper end in FIG. 1) side of the sleeve 7, and the distal end surface of the fiber stub 4 is It is abutted against the front end surface 4b.
- the optical fiber 5 in the fiber stub 4 and the optical fiber in the plug ferrule are abutted concentrically, and the optical fibers are connected to each other.
- the sleeve 7 is preferably a split sleeve 7 with slits in the axial direction.
- the split sleeve 7 has an inner diameter slightly smaller than the outer diameter of the fiber stub 4 or the plug ferrule.
- the slit expands to increase the inner diameter of the split sleeve 7 and the fiber stub 4 and the plug ferrule are gripped by the elastic force of the split sleeve 7 so as to be coaxial.
- the sleeve 7 is brought into close contact with the outer peripheral surface of the fiber stub 4 and the plug ferrule by the elastic force of the sleeve 7, and the fiber stub 4 and the plug ferrule are held with a small clearance. It becomes possible to efficiently combine the propagating light.
- the sleeve 7 is preferably inserted to a position where the rear end surface thereof abuts against the front end surface of the protruding portion 6e. Or when the cylindrical member 6 shown by FIG. 4 is used, it is good to insert to the position which abuts on the front end surface 6a of the cylindrical member 6 by which C cut surface 6f was formed in the outer peripheral part.
- the sleeve 7 is fixed to the fiber stub 4 with a small clearance so that it cannot be easily removed.
- the space between the cylindrical member 6 formed on the rear end surface of the sleeve 7 can be reduced.
- the sleeve 7 can be removed easily and safely by inserting a tool into the gap.
- the rear end surface of the sleeve 7 is fixed so as to abut against the front end surface of the protruding portion 6e. Then, a gap is formed between the rear end surface of the sleeve 7 and the one end 6a surface of the cylindrical member 6, and a tool can be inserted therein.
- the length of insertion of the sleeve 7 into the fiber stub 4 can be easily managed by being abutted against and fixed to the front end surface of the protruding portion 6e or the front end surface 6a of the cylindrical member 6.
- the outside of the sleeve 7 is covered with a shell 8 that protects the sleeve 7 and prevents the sleeve 7 from falling off the fiber stub 4.
- the shell 8 may be formed by molding resin or metal. Since the resin has good moldability, is inexpensive and is an insulator, the resin is suitable for the shell 8 of the present embodiment.
- the shell 8 includes an axial groove 8ca of the shell 8 provided in a portion on the rear end 8a side, and a groove 8cb provided in the circumferential direction of the shell 8 from the end of the groove 8ca.
- the L-shaped groove 8c is formed.
- the shell 8 can be fixed to the cylindrical member 6 by engaging the projection 6d of the cylindrical member 6 with the groove 8c.
- the cylindrical member 6 and the shell 8 are attached by a so-called bayonet mount type fixing method.
- the protrusion 6d functions as a claw or a radial pin
- the groove 8c functions as an L-shaped slot.
- the projection 6d is aligned with the end portion of the groove 8ca formed in the axial direction
- the shell 8 is put on the fiber stub 4 and the sleeve 7, and inserted in the axial direction.
- the shell 8 is rotated to slide the protrusion 6d along the circumferential groove 8cb and rotate until the protrusion 6d reaches the end position of the groove 8cb.
- the groove 8cb is formed slightly wider in the direction of the rear end of the shell 8, and the protrusion 6d is fixed so as to drop and stay there.
- the groove 8cb is preferably formed so as to be slightly inclined in the direction farther from the rear end 8a of the shell 8 as it goes from the portion connected to the groove 8ca to the terminal side. Accordingly, as the shell 8 is rotated and fixed, the rear end 8a surface of the shell 8 is pressed against the cylindrical member 6 and is firmly fixed, and the stress repelling the compressive force applied to the shell 8 becomes a spring force. The shell 8 can be fixed to the cylindrical member 6.
- the diameter of the inner peripheral surface of the shell 8 is preferably set to be 0.001 mm to 0.1 mm larger than the diameter of the outer peripheral surface 6 c of the cylindrical member 6.
- a gap is formed between the outer peripheral surface 6 c of the cylindrical member 6 and the inner peripheral surface of the shell 8.
- FIG. 5 is a cross-sectional view for explaining light output fluctuations that occur when the plug ferrule 13 is connected to the optical receptacle 1.
- a lower lateral load F is applied to the plug ferrule 13
- the plug ferrule 13 moves so as to rotate about the opening 8 b opening of the shell 8, and the tip of the plug ferrule 13 with respect to the tip of the fiber stub 4. Will shift upward.
- the shell 8 since the shell 8 is only locked by the projection 6d and the groove 8c, if there is a gap between the outer peripheral surface 6c of the cylindrical member 6 and the inner peripheral surface of the shell 8, the shell 8 The whole moves in the direction of the load F, a gap G is formed, and the fulcrum by the opening of the tip 8b moves downward. By moving the fulcrum, the amount of displacement of the tip of the plug ferrule 13 with respect to the fiber stub 4 is reduced, and the wiggle characteristic can be improved.
- the shell 8 made of a resin having elasticity contributes to the improvement of the wiggle characteristics as well.
- the difference between the inner diameter of the shell 8 and the outer diameter of the outer peripheral surface of the cylindrical member 6 is 0.03 mm and a load of 1.1 N is applied to a position 27 mm from the tip of the plug ferrule 13 of the plug ferrule 13, It was confirmed that the optical output fluctuation can be suppressed to 0.2 to 0.3 dB as compared with the optical receptacle in which the metal shell is press-fitted into the metal holder.
- two flange-shaped projecting portions 8d and 8e are formed on the rear end 8a portion side of the shell 8.
- the groove 8c is formed into a U-shaped groove with a bottom at the protruding portions 8d and 8e, and is formed as a slot-shaped hole at the portion without the protruding portions 8d and 8e.
- the groove 8c may be formed as a slot 8c penetrating from the inner surface to the outer surface of the shell 8, or a part thereof may be formed as a groove and the remaining portion may be formed as a slot as in the present embodiment.
- a notch 8ea is provided in the protruding portion 8e of the shell 8.
- the position of the groove 8c can be easily understood.
- the notch 8ea can be used to function as a marking for identifying the shell 8.
- a plurality of optical receptacles 1 or optical transmission / reception modules 3 may be used in parallel.
- two types of optical transmission / reception modules 3 called TOSA (Transmitter-Optical-SubAssembly) and ROSA (Receiver-Optical-SubAssembly) may be used side by side in an optical transceiver.
- TOSA Transmitter-Optical-SubAssembly
- ROSA Receiver-Optical-SubAssembly
- channel identification can be facilitated by checking the shell 8.
- the shell 8 Since the shell 8 is disposed at a position close to the connection portion of the optical receptacle 1 to which the optical connector with a built-in plug ferrule is connected, it is suitable for performing such marking. Moreover, since the shell 8 can be attached lastly after assembling the optical transceiver module 3, after the assembly of the optical transceiver is finished, an appropriate shell 8 is attached according to the use of the optical transceiver module 3 for identification purposes. Can be used.
- the markings only need to be distinguishable from each other, and various methods can be used. For example, like the example shown in FIG. 6, it can be performed by printing a character or a symbol in the marking area 8f. Different colors may be used for characters or symbols to improve the discrimination. In addition, characters and symbols may be stamped in the marking area 8f. You may stick the sticker which marked the character or the symbol to the marking area
- the method of identifying with a stamp includes a method using a notch 8ea. By making the position or number of the notches 8ea different from each other in the shell 8, the notches 8ea can be made identifiable markings.
- the shell 8 may be identified by changing the ground color.
- the shell 8 having a red ground color can be distinguished and used as TOSA, and the shell 8 having a blue ground color can be distinguished.
- the position of the marking area 8f shown in FIG. 6 is an example, and the marking area 8f may be provided at the most appropriate position on the outer surface of the shell 8.
- the method of performing the marking by printed characters or symbols has an advantage that a lot of information can be shown in an easily understandable manner.
- the stamping method has an advantage that a stamp is provided in advance on the mold.
- the method of changing the background color of the shell 8 has an advantage that it can be performed by changing the coloring of the material.
- the marking method may be a combination of the various methods described above. Even when the ground color of the shell 8 is varied, it is preferable to select a coloring material to such an extent that the shell 8 does not lose translucency. When the shell 8 is made of a transparent or translucent material, the shell 8 can be easily attached, and the attached state of the inner sleeve 7 can be confirmed.
- the outer diameter of the fiber stub 4 is determined by the outer diameter size of the plug ferrule of the optical connector abutted against the fiber stub 4.
- the outer diameter is about 1.25 mm.
- the outer diameter is about 2.5 mm.
- the outer diameter is 2 mm.
- a plug ferrule of about 0 mm is used.
- the fiber stub 4 basically has the same outer diameter as that of the plug ferrule.
- the ferrule of the fiber stub 4 is made of a plastic material such as metal, epoxy resin, or liquid crystal polymer resin, or a ceramic material such as alumina ceramic or zirconia ceramic. From the viewpoint of mechanical performance, the ferrule is preferably formed of zirconia ceramics. Specifically, partial stabilization mainly comprising tetragonal crystals, containing ZrO 2 as a main component, at least one of Y 2 O 3 , CaO, MgO, CeO 2 , Dy 2 O 3 and the like as a stabilizer. Ferrules using zirconia ceramics are preferred. Such partially stabilized zirconia ceramics is advantageous in being fixed to the cylindrical member 6 because it has excellent wear resistance and is appropriately elastically deformed.
- the ferrule of the fiber stub 4 is formed from, for example, zirconia ceramics
- a cylindrical or rectangular parallelepiped shaped body is obtained from a zirconia ceramic raw material in advance by a predetermined molding method such as injection molding, press molding, or extrusion molding. Thereafter, the molded body is fired at 1300 ° C. to 1500 ° C., and then the outer peripheral surface is manufactured by cutting or polishing the fiber stub 4 to a predetermined dimension.
- a predetermined shape may be formed in advance on the molded body before firing by cutting or the like, and then firing may be performed.
- the front end surface 4b of the fiber stub 4 is mirror-polished into a curved surface with a curvature radius of about 5 mm to 30 mm in order to reduce the connection loss with the plug ferrule of the optical connector, and the rear end surface 4a is made of an LD (laser diode) or the like. 4 degrees with respect to the plane perpendicular to the axis of the fiber stub 4 together with the optical fiber 5 in order to prevent generation of reflected light that is reflected from the end face of the optical fiber 5 and returns to the optical element. Polished to an inclined surface of about 10 °.
- the sleeve 7 is made of a material such as zirconia ceramics, alumina ceramics, or copper. In consideration of wear resistance, ceramic materials such as zirconia ceramics are often used.
- a processing method for example, in the case of forming with a ceramic material such as zirconia, like the above fiber stub 4, a cylinder that becomes the sleeve 7 by a predetermined molding method such as injection molding, press molding, or extrusion molding in advance. A shaped or columnar shaped body is obtained, and then the shaped body is fired at 1300 ° C. to 1500 ° C. and cut or polished to a predetermined size. Note that a predetermined shape may be formed in advance on the molded body by cutting or the like, and then firing may be performed.
- the surface roughness of the inner diameter of the sleeve 7 is preferably set to an arithmetic average roughness (Ra) of 0.2 ⁇ m or less in consideration of insertability.
- the tolerance between the outer diameter of the fiber stub 4 and the inner diameter of the sleeve 7 is preferably ⁇ 1 ⁇ m or less in order to reduce connection loss.
- it is desirable that the inner diameter of the sleeve 7 is designed to have an insertion force of 0.98 N or more in order to securely hold the fiber stub 4.
- the cylindrical member 6 is made of a material such as stainless steel, copper, iron, nickel, plastics, zirconia ceramics or alumina ceramics. From the viewpoint of workability and elasticity, it is preferable to use a metal material, and a stainless steel material is often used. As the processing method, for example, a metal wire thicker than the outer diameter of the tubular member 6 is cut by a lathe process or the like.
- the shell 8 is made of a plastic material such as polyetherimide, polysulfone or polyphenylene sulfide, or a metal material such as stainless steel, copper, iron or nickel. From the viewpoint of moldability, it is preferable to use a plastic material such as polyetherimide and injection-mold it.
- the optical component assembly presses and fixes the rear end 4a of the fiber stub 4 into the inner hole of the tubular member 6 while applying pressure to the tip 4b of the fiber stub 4. Note that a portion thicker than the outer diameter of the fiber stub 4 is provided on the one end 6a side of the inner hole of the cylindrical member 6, and the press-fitting length of the fiber stub 4 is adjusted.
- the sleeve 7 is inserted into the tip 4b of the fiber stub 4, and the shell 8 is inserted as described above so as to cover the sleeve 7 and fixed to the bayonet mount type.
- the alignment adapters 12a and 12b are joined to the cylindrical member 6 of the optical component assembly or the optical receptacle 1, and the elements of the optical communication package 11 containing the optical elements are fixed, thereby transmitting and receiving optical communication according to the present invention.
- Module 3 is produced.
- the optical receptacle 1 or the optical component assembly can be moved in the XYZ directions to a position where the optical element in the optical communication package 11 and the optical fiber 5 are optically coupled.
- the transceiver module 3 for optical communication of the present invention is completed.
- the shell 8 that can be easily attached or detached can be fixed to the protrusion 9d of the optical component assembly, and the sleeve 7 can be attached or detached. Or exchange is also easy. And when removing a foreign material, the shell 8 and the sleeve 7 are removed, the fiber stub 4 is exposed, and the foreign material adhering to the inside can be sufficiently cleaned. Therefore, it is possible to provide the optical receptacle 1 and the optical communication transceiver module 3 that can easily return the connection performance.
- the optical component assembly is used for the optical receptacle 1.
- the present invention is not limited to this.
- it can also be used in an optical receptacle type having a function of a sleeve or the like on the side of the optical connector connected to the optical communication transceiver module 3.
- Optical receptacle 2 Optical element storage unit 3: Transmission / reception module for optical communication 4: Light guide member (fiber stub) 4a: one end 4b: other end 5: optical fiber 6: cylindrical member 6a: one end 6b: other end 6c: outer peripheral surface 6d: protrusion 6e: protrusion 6f: C surface 7: sleeve 8: shell 8a: rear end 8b: front end 8c: Groove 8d, 8e: Projection 8f: Marking area 9: Optical isolator 9a: Polarizer 9b: Faraday rotator 9c: Analyzer 10: Magnet 11: Optical communication packages 12a, 12b: Alignment adapter
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Optical Couplings Of Light Guides (AREA)
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Abstract
Description
2:光素子収納部
3:光通信用送受信モジュール
4:導光部材(ファイバスタブ)
4a:一端
4b:他端
5:光ファイバ
6:筒部材
6a:一端
6b:他端
6c:外周面
6d:突起
6e:突出部
6f:C面
7:スリーブ
8:シェル
8a:後端
8b:先端
8c:溝
8d,8e:突出部
8f:マーキング領域
9:光アイソレータ
9a:偏光子
9b:ファラデー回転子
9c:検光子
10:磁石
11:光通信用パッケージ
12a,12b:調芯アダプタ
Claims (17)
- 導光部材と、該導光部材を貫通孔内に保持する筒部材と、該筒部材の一端において外周面より突出し、筒状のシェルに設けられた軸方向から周方向に折れ曲がる溝に係合される突起とを具備する光部品組立体。
- 前記突起は、前記筒部材の中心軸に関して対称な2箇所以上に配置されていることを特徴とする請求項1記載の光部品組立体。
- 前記突起は、前記筒部材の一端面から突出する突出部の側面に設けられていることを特徴とする請求項1または2記載の光部品組立体。
- 前記導光部材は、後端面の少なくとも一部が傾斜面とされており、該傾斜面の傾斜方向と前記突起の突出方向とが一定の位置関係を有することを特徴とする請求項1乃至3のいずれか1つに記載の光部品組立体。
- 前記導光部材の光路上に光アイソレータが配置されていることを特徴とする請求項1乃至4のいずれか1つに記載の光部品組立体。
- 前記突起の突出方向と前記光アイソレータを透過する光の偏波面の方向または遮断される光の偏波面の方向とが一定の位置関係を有することを特徴とする請求項5記載の光部品組立体。
- 前記導光部材は、フェルールに光ファイバが挿通されたファイバスタブであることを特徴とする請求項1乃至6のいずれか1つに記載の光部品組立体。
- 請求項1乃至7のいずれか1つに記載の光部品組立体と、前記導光部材の先端部に配置されたスリーブと、該スリーブの外側面を覆うとともに、後端部に軸方向から周方向に折れ曲がる溝を有し、該溝を前記突起に係合させて固定された筒状のシェルとを具備することを特徴とする光レセプタクル。
- 前記スリーブの後端面は、前記突出部の先端面に当接しており、前記スリーブの後端面と前記筒部材の一端面との間に隙間があることを特徴とする請求項8記載の光レセプタクル。
- 前記筒部材の外周面と前記シェルの内周面との間に隙間があることを特徴とする請求項8または9記載の光レセプタクル。
- 前記溝の周方向の部分は、軸方向の溝と接続される部分から末端側に行くほど前記シェルの後端面から遠くなる傾斜溝とされていることを特徴とする請求項8乃至10のいずれか1つに記載の光レセプタクル。
- 前記シェルに識別可能なマーキングが付されていることを特徴とする請求項8乃至11のいずれか1つに記載の光レセプタクル。
- 前記マーキングは、前記シェルの外観色と異なる色によるものであることを特徴とする請求項12記載の光レセプタクル。
- 前記マーキングは、前記シェルに施された刻印によるものであることを特徴とする請求項12または13記載の光レセプタクル。
- 前記マーキングは、前記シェルに着色された色によるものであることを特徴とする請求項12乃至請求項14のいずれか1つに記載の光レセプタクル。
- 請求項8乃至15のいずれか1つに記載の光レセプタクルと、内部に光素子を収容し、前記筒部材に固定された光通信用パッケージとを具備する光通信用送受信モジュール。
- 請求項1乃至7のいずれか1つに記載の光部品組立体と、内部に光素子を収容し、前記筒部材に固定された光通信用パッケージとを具備する光通信用送受信モジュール。
Priority Applications (3)
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CN201480003754.0A CN104884987A (zh) | 2013-07-26 | 2014-07-17 | 光部件组装体、光学插座以及光通信用收发模块 |
JP2015528249A JP6110493B2 (ja) | 2013-07-26 | 2014-07-17 | 光部品組立体、光レセプタクル、および光通信用送受信モジュール |
US14/758,793 US9810863B2 (en) | 2013-07-26 | 2014-07-17 | Optical component assembly, optical receptacle, and transceiver module for optical communications |
Applications Claiming Priority (6)
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JP2013155455 | 2013-07-26 | ||
JP2013-155455 | 2013-07-26 | ||
JP2013245775 | 2013-11-28 | ||
JP2013-245775 | 2013-11-28 | ||
JP2014-064433 | 2014-03-26 | ||
JP2014064433 | 2014-03-26 |
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WO2015012183A1 true WO2015012183A1 (ja) | 2015-01-29 |
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PCT/JP2014/068998 WO2015012183A1 (ja) | 2013-07-26 | 2014-07-17 | 光部品組立体、光レセプタクル、および光通信用送受信モジュール |
Country Status (4)
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US (1) | US9810863B2 (ja) |
JP (1) | JP6110493B2 (ja) |
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Also Published As
Publication number | Publication date |
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US9810863B2 (en) | 2017-11-07 |
JP6110493B2 (ja) | 2017-04-05 |
US20150378107A1 (en) | 2015-12-31 |
CN104884987A (zh) | 2015-09-02 |
JPWO2015012183A1 (ja) | 2017-03-02 |
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