US20030174973A1 - Connector component for optical fiber, manufacturing method thereof and optical member - Google Patents
Connector component for optical fiber, manufacturing method thereof and optical member Download PDFInfo
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- US20030174973A1 US20030174973A1 US10/196,661 US19666102A US2003174973A1 US 20030174973 A1 US20030174973 A1 US 20030174973A1 US 19666102 A US19666102 A US 19666102A US 2003174973 A1 US2003174973 A1 US 2003174973A1
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- optical fibers
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- connector component
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/06—Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
-
- 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
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
-
- 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
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
- G02B6/3838—Means for centering or aligning the light guide within the ferrule using grooves for light guides
- G02B6/3839—Means for centering or aligning the light guide within the ferrule using grooves for light guides for a plurality of light guides
-
- 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
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3854—Ferrules characterised by materials
-
- 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
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3812—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres having polarisation-maintaining light guides
-
- 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
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
- G02B6/3861—Adhesive bonding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
Definitions
- the present invention relates to a connector component for optical fibers, a manufacturing method therefor and an optical member for arranging optical fibers with good dimensional accuracy and good parallelism in a connector component for connecting optical fibers and in an optical communication device such as an isolator, a circulator, a splitter, a light guide, a thermochemical switch and an optical switch used in the optical communication field.
- an optical communication device such as an isolator, a circulator, a splitter, a light guide, a thermochemical switch and an optical switch used in the optical communication field.
- a connector component for optical fibers such as a single-core ferrule or a two-core ferrule using zirconia ceramics or glass-ceramic, and a fiber array as shown in FIG. 1 in which V-shaped grooves are formed on a board made of glass-ceramic, quartz glass, and silicon are used for setting the optical axis in a connector for connecting optical fibers, an isolator and a circulator, or a ferrule and a fiber array for optical fibers used for connecting to an AWG waveguide.
- the thermal expansion coefficient of the ferrule or the fiber array differs from the thermal expansion coefficient of the optical fibers. Therefore, the size of the ferrule or fiber array and the size of the optical fibers vary differently according to the environmental temperature. Thus, bonding surfaces of the ferrule or fiber array and the optical fibers are stressed. At the same time, there is a possibility that adhesion strength is deteriorated. Accordingly, such a connector component for optical fibers is not reliable. Further, when using the V-shaped groove type fiber array, two to three boards made of quartz are combined so as to fix optical fibers. Thus, more manufacturing processes are required. Additionally, since two to three kinds of costly adhesives are used, the assembling is complex and the cost increases. As a result, diffusion of optical communication is prevented.
- a manufacturing method for a connector component for optical fibers including a base material made of quartz glass and provided with at least two holes for inserting and fixing optical fibers
- the manufacturing method including the steps of: (a) arranging a plurality of inner components for forming holes for inserting optical fibers in a die for forming an outer form of the connector component with a dimensional accuracy equal to or less than 2 ⁇ m; (b) pouring slurry into the die, the slurry including quartz powder, a resin binder, a dispersant, water and a curing agent; (c) curing the poured slurry; and (d) heating the cured slurry under vacuum so as to vitrify the cured slurry to obtain the quartz glass.
- the quartz glass may be high purity quartz glass containing equal to or more than 99.9% SiO 2 , equal to or less than 10 ppm Al 2 O 3 , equal to or less than 1 ppm Li 2 O, equal to or less than 10 ppm MgO, equal to or less than 10 ppm TiO 2 , equal to or less than 10 ppm ZrO 2 , equal to or less than 10 ppm K 2 O, equal to or less than 10 ppm Na 2 O, equal to or less than 10 ppm ZnO, equal to or less than 10 ppm CaO, and equal to or less than 10 ppm BaO.
- the thermal expansion coefficient of the quartz glass of which the connector component is made is controlled to be in a range of 0.45 ⁇ 0.6 ⁇ 10 ⁇ 7 /° C., and the transmission rate of ultraviolet light having wavelength 356 nm is controlled to be equal to or more than 90%.
- the above-mentioned high purity quartz glass may include another component as long as the component thereof does not cause harm to the optical characteristics of the high purity quartz glass.
- an optical member including: optical fibers; and a connector component for optical fibers, the connector component including a base material made of quartz glass and provided with two or more holes for inserting and fixing the optical fibers therein, wherein the connector component is fixed to ends of the optical fibers by using epoxy thermosetting type adhesive or ultraviolet curing type adhesive.
- exposed strands of optical fibers are inserted into respective capillaries (holes), adhesive is filled in between the optical fibers and the capillaries, and a curing light is irradiated to the adhesive.
- the adhesive is solidified and the optical fibers and capillaries are fixed to each other. Since the irradiated light is transmitted in the capillaries, even when the outer side is covered with an armoring material, it is possible to irradiate the curing light inside the capillaries from the ends of the capillaries. Further, the capillaries and the exposed strands of the optical fibers are more positively adhered and fixed to each other inside the capillaries by the adhesive solidified by the irradiated working light.
- the composition of the connector component and the composition of the optical fibers are the same, and the thermal expansion coefficient of the connector component and the thermal expansion coefficient of the optical fibers are almost the same.
- stress to bonded parts does not increase since the stress is due to variation in the size of the connector component and the optical fibers caused by variation of environmental temperature. Accordingly, reliability of adhesion is higher.
- the above-mentioned connector component may be more useful since the sizes of fiber arrays have been increasing recently.
- the optical member and optical component using a ferrule made of quartz and a fiber array made of quartz have advantages in that various characteristics can be obtained almost the same as design targets in optical designing.
- the various characteristics there are the polarized wave dependent property according to a wavelength plate, reduction in loss in AWG (arrayed waveguide grating), dispersion property and transmission distance of optical fibers, for example.
- the optical member combining the connector component and optical fibers uses light-curing resin as an adhesive.
- capillaries are formed by using a material that can transmit working light.
- the adhesive is cured by irradiating the working light from the ends of the capillaries. Accordingly, besides the above-mentioned effects, the capillaries and the optical fibers are fixed to each other.
- a terminal structure formed by combining the connector component and optical fibers does not need a burdensome process for solidifying the adhesive, for example, stopping work on the terminal structure for a required reaction time so that the adhesive is solidified and performing heat treatment on the terminal structure. It is possible to simply manage the terminal treatment process of optical fibers with a predetermined irradiating process. As a result, the building process can be facilitated, efficiency can be improved, and manufacturing cost can be reduced.
- the connector component according to the present invention is suitable for quantity production.
- FIG. 2A is a front view of a fiber array according to an embodiment of the present invention.
- FIG. 3B is a longitudinal sectional view of the ferrule in FIG. 3A according to the embodiment of the present invention.
- the fiber array 1 is formed by a prismatic base material 3 having a plurality of fiber-insertion holes 5 therein.
- the fiber insertion holes 5 are arranged in a lattice state such as in an 8 rows ⁇ 8 lines arrangement.
- all edges of the fiber insertion holes on one side of the fiber array 1 are chamfered so as to form surfaces 5 a .
- the ferrule 11 is formed by a column-shaped base material 13 having a plurality of fiber insertion holes 15 .
- the fiber insertion holes 15 are arranged in a 2 ⁇ 2 latticed state, for example.
- a cone-shaped hollow 13 a is formed on one end of the ferrule 11 so that the hollow 13 a communicates with the fiber insertion holes 15 .
- the jumper cable 21 is structured by using the fiber array 1 and optical cables 23 . Additionally, as shown in FIG. 5, the jumper cable 31 is structured by using the ferrule 11 and optical fibers 33 .
- the thermal expansion coefficient of the obtained fiber array was 0.52 ⁇ 10 ⁇ 6 /° C., which was almost the same thermal expansion coefficient (0.5 ⁇ 10 ⁇ 6 /° C.) of quartz glass that is the material of the optical fibers. Further, the fiber array had a 92% transmission rate of ultraviolet light having wavelength 356 nm.
- optical fiber cable was maintained for 2000 hours under an atmosphere of 85% humidity and 85 ° C. Then, adhesion strength on the fiber array side was measured. As a result, adhesion strength not less than 12 N through 34 N was maintained. Thus, it was confirmed that the connector component according to the embodiment has high reliability in the adhesive characteristic.
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- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Glass Compositions (AREA)
Abstract
A connector component for optical fibers has good dimensional accuracy and parallelism. The connector component includes a base material. The base material is provided with at least two holes for inserting and fixing optical fibers therein. The base material is made of quartz glass. Inner components are arranged for forming holes for inserting optical fibers in a die for forming an outer form of the connector component with a dimensional accuracy equal to or less than 2 μm. Slurry is poured into the die, the slurry including quartz powder, a resin binder, a dispersant, water and a curing agent. The poured slurry is cured and heated under vacuum so as to vitrify the cured slurry to obtain the quartz glass.
Description
- 1. Field of the Invention
- The present invention relates to a connector component for optical fibers, a manufacturing method therefor and an optical member for arranging optical fibers with good dimensional accuracy and good parallelism in a connector component for connecting optical fibers and in an optical communication device such as an isolator, a circulator, a splitter, a light guide, a thermochemical switch and an optical switch used in the optical communication field.
- 2. Description of the Related Art
- In the optical communication field, a connector component for optical fibers such as a single-core ferrule or a two-core ferrule using zirconia ceramics or glass-ceramic, and a fiber array as shown in FIG. 1 in which V-shaped grooves are formed on a board made of glass-ceramic, quartz glass, and silicon are used for setting the optical axis in a connector for connecting optical fibers, an isolator and a circulator, or a ferrule and a fiber array for optical fibers used for connecting to an AWG waveguide.
- However, in the connector component for optical fibers such as a ferrule for optical communication and a fiber array, when the material of the ferrule and the fiber array is zirconia ceramics, in a case where the ferrule and fiber array are mechanically stressed, the crystal structure of ceramics is transformed from tetragonal crystal to monoclinic crystal. The phase change causes an increase in the size of the ceramics. Thus, the distance between holes of the ferrule and the distance between the V-shaped grooves of a V-shaped groove type fiber array change. Accordingly, a high-accuracy optical connection cannot be maintained for the long term.
- Additionally, when the material of the ferrule or the fiber array is different from the material of the optical fibers, the thermal expansion coefficient of the ferrule or the fiber array differs from the thermal expansion coefficient of the optical fibers. Therefore, the size of the ferrule or fiber array and the size of the optical fibers vary differently according to the environmental temperature. Thus, bonding surfaces of the ferrule or fiber array and the optical fibers are stressed. At the same time, there is a possibility that adhesion strength is deteriorated. Accordingly, such a connector component for optical fibers is not reliable. Further, when using the V-shaped groove type fiber array, two to three boards made of quartz are combined so as to fix optical fibers. Thus, more manufacturing processes are required. Additionally, since two to three kinds of costly adhesives are used, the assembling is complex and the cost increases. As a result, diffusion of optical communication is prevented.
- It is a general object of the present invention to provide an improved and useful connector component for optical fibers, manufacturing method therefor and an optical member in which the above-mentioned problems are eliminated.
- A more specific object of the present invention is to provide a connector component for optical fibers, manufacturing method therefor and an optical member that can arrange optical fibers with good dimensional accuracy and good parallelism.
- In order to achieve the above-mentioned object, according to one aspect of the present invention, there is provided a connector component for optical fibers, the connector component including a base material provided with at least two holes for inserting and fixing optical fibers therein, wherein the base material is made of quartz glass (fused silica glass).
- According to the above-mentioned aspect of the present invention, both optical fibers and the base material of the connector component for optical fibers (referred to as “connector component”, hereinafter) are made of quartz glass. Quartz glass has a small thermal expansion coefficient. Thus, matching of thermal expansion coefficients of the optical fibers and the base material is improved. Accordingly, adhesion of the optical fibers and the connector component, such as a ferrule or a fiber array, becomes more reliable. Additionally, compared with V-shaped grooves, surface treatment of bonding surfaces is easier and the process for polishing, for example, is better. Further, the connector component is provided with two or more holes for inserting the optical fibers such that the holes are arranged with a predetermined distance there between. Therefore, by using the ferrule or the fiber array structured by a single component, it is possible to arrange and fix a plurality of optical fibers with high accuracy. The holes in the connector component for optical fibers may be arranged in not only a single line but also in a plurality of lines. For example, 8 rows×1 line, 12 rows×1 line, 40 rows×1 line, 2 rows×2 lines, 4 rows×2 lines, 4 rows×4 lines, 8 rows×8 lines, and 10 rows×8 lines.
- Additionally, according to another aspect of the present invention, there is provided a manufacturing method for a connector component for optical fibers, the connector component including a base material made of quartz glass and provided with at least two holes for inserting and fixing optical fibers, the manufacturing method including the steps of: (a) arranging a plurality of inner components for forming holes for inserting optical fibers in a die for forming an outer form of the connector component with a dimensional accuracy equal to or less than 2 μm; (b) pouring slurry into the die, the slurry including quartz powder, a resin binder, a dispersant, water and a curing agent; (c) curing the poured slurry; and (d) heating the cured slurry under vacuum so as to vitrify the cured slurry to obtain the quartz glass.
- According to the above-mentioned aspect of the present invention, it is possible to manufacture the connector component for optical fibers with high dimensional accuracy.
- Additionally, according to another aspect of the present invention, the quartz glass may be high purity quartz glass containing equal to or more than 99.9% SiO2, equal to or less than 10 ppm Al2O3, equal to or less than 1 ppm Li2O, equal to or less than 10 ppm MgO, equal to or less than 10 ppm TiO2, equal to or less than 10 ppm ZrO2, equal to or less than 10 ppm K2O, equal to or less than 10 ppm Na2O, equal to or less than 10 ppm ZnO, equal to or less than 10 ppm CaO, and equal to or less than 10 ppm BaO. It is preferable that, by using the above-mentioned high purity quartz glass, the thermal expansion coefficient of the quartz glass of which the connector component is made is controlled to be in a range of 0.45˜0.6×10−7/° C., and the transmission rate of ultraviolet light having wavelength 356 nm is controlled to be equal to or more than 90%. It should be noted that the above-mentioned high purity quartz glass may include another component as long as the component thereof does not cause harm to the optical characteristics of the high purity quartz glass.
- Additionally, according to another aspect of the present invention, there is provided an optical member, including: optical fibers; and a connector component for optical fibers, the connector component including a base material made of quartz glass and provided with two or more holes for inserting and fixing the optical fibers therein, wherein the connector component is fixed to ends of the optical fibers by using epoxy thermosetting type adhesive or ultraviolet curing type adhesive.
- According to the above-mentioned aspect of the present invention, exposed strands of optical fibers are inserted into respective capillaries (holes), adhesive is filled in between the optical fibers and the capillaries, and a curing light is irradiated to the adhesive. Thereby, the adhesive is solidified and the optical fibers and capillaries are fixed to each other. Since the irradiated light is transmitted in the capillaries, even when the outer side is covered with an armoring material, it is possible to irradiate the curing light inside the capillaries from the ends of the capillaries. Further, the capillaries and the exposed strands of the optical fibers are more positively adhered and fixed to each other inside the capillaries by the adhesive solidified by the irradiated working light.
- According to the above-mentioned aspects of the present invention, when the connector component for the optical fibers is combined with optical fibers, the composition of the connector component and the composition of the optical fibers are the same, and the thermal expansion coefficient of the connector component and the thermal expansion coefficient of the optical fibers are almost the same. Thus, stress to bonded parts does not increase since the stress is due to variation in the size of the connector component and the optical fibers caused by variation of environmental temperature. Accordingly, reliability of adhesion is higher.
- The above-mentioned connector component may be more useful since the sizes of fiber arrays have been increasing recently. On the other hand, the optical member and optical component using a ferrule made of quartz and a fiber array made of quartz have advantages in that various characteristics can be obtained almost the same as design targets in optical designing. As for the various characteristics, there are the polarized wave dependent property according to a wavelength plate, reduction in loss in AWG (arrayed waveguide grating), dispersion property and transmission distance of optical fibers, for example.
- Additionally, the optical member combining the connector component and optical fibers uses light-curing resin as an adhesive. At the same time, in the optical member, capillaries are formed by using a material that can transmit working light. Thus, the adhesive is cured by irradiating the working light from the ends of the capillaries. Accordingly, besides the above-mentioned effects, the capillaries and the optical fibers are fixed to each other.
- Therefore, a terminal structure formed by combining the connector component and optical fibers does not need a burdensome process for solidifying the adhesive, for example, stopping work on the terminal structure for a required reaction time so that the adhesive is solidified and performing heat treatment on the terminal structure. It is possible to simply manage the terminal treatment process of optical fibers with a predetermined irradiating process. As a result, the building process can be facilitated, efficiency can be improved, and manufacturing cost can be reduced. Thus, the connector component according to the present invention is suitable for quantity production.
- Other objects, features and advantages of the present invention will become more apparent from the following detailed description when read in conjunction with the following drawings.
- FIG. 1 is a perspective view of a conventional V-shaped groove array;
- FIG. 2A is a front view of a fiber array according to an embodiment of the present invention;
- FIG. 2B is a longitudinal sectional view of the fiber array in FIG. 2A according to the embodiment of the present invention;
- FIG. 3A is a front view of a ferrule according to another embodiment of the present invention;
- FIG. 3B is a longitudinal sectional view of the ferrule in FIG. 3A according to the embodiment of the present invention;
- FIG. 3C is a rear view of the ferrule in FIG. 3A according to the embodiment of the present invention;
- FIG. 4 is a schematic diagram showing the structure of a jumper cable using the fiber array shown in FIGS. 2A and 2B; and
- FIG. 5 is a schematic diagram showing the structure of another jumper cable using the ferrule shown in FIGS. 3A, 3B and3C.
- A description will be given of embodiments of the present invention, by referring to the drawings.
- FIG. 2A is a front view of a fiber array1 according to an embodiment of the present invention. FIG. 2B is a cross sectional view of the fiber array 1.
- FIG. 3A is a front view of a
ferrule 11 according to another embodiment of the present invention. FIG. 3B is a cross sectional view of theferrule 11, and FIG. 3C is a rear view of theferrule 11. - As shown in FIG. 2A, the fiber array1 is formed by a
prismatic base material 3 having a plurality of fiber-insertion holes 5 therein. Thefiber insertion holes 5 are arranged in a lattice state such as in an 8 rows×8 lines arrangement. Additionally, as shown in FIG. 2B, all edges of the fiber insertion holes on one side of the fiber array 1 are chamfered so as to formsurfaces 5 a. In addition, as shown in FIG. 3A, theferrule 11 is formed by a column-shapedbase material 13 having a plurality of fiber insertion holes 15. The fiber insertion holes 15 are arranged in a 2×2 latticed state, for example. As shown in FIGS. 3B and 3C, a cone-shaped hollow 13 a is formed on one end of theferrule 11 so that the hollow 13 a communicates with the fiber insertion holes 15. - Next, a description will be given of an optical member to which the connector component for optical fibers according to the above-mentioned embodiments of the present invention is applied. It should be noted that in this specification, the word “connector component” refers to a fiber array and a ferrule, and the like
- FIG. 4 is a schematic diagram showing the structure of a
jumper cable 21 using the above-mentioned fiber array 1. FIG. 5 is a schematic diagram showing the structure of anotherjumper cable 31 using the above-mentionedferrule 11. - As shown in FIG. 4, the
jumper cable 21 is structured by using the fiber array 1 andoptical cables 23. Additionally, as shown in FIG. 5, thejumper cable 31 is structured by using theferrule 11 andoptical fibers 33. - The connector components for optical fibers structured as mentioned above have the same material composition as optical fibers. Thus, thermal expansion coefficients of the connector components and a thermal expansion coefficient of optical cables are almost the same. Accordingly, when the connector component is combined with the optical fibers, higher reliability of adhesion is achieved since stresses to bonded parts do not increase. In this case, the stresses are caused by variations of the sizes of the connector components and optical fibers according to the variation of environmental temperature.
- In the following, a description will be given of an experiment performed by the inventors of the present invention.
- First, quartz powder (average particle diameter: 0.5 μm) of 99.9% purity was dispersed in alkaline solution with epoxy resin as an organic binder and an organic dispersant. Thus obtained material was put through a sieve having 200 meshes, and a hardening agent was added thereto. Thereafter, the material was defoamed by agitation under vacuum so as to obtain slip (slurry). Then, the slip was poured into a die for forming the outer form of the connector component for optical fibers. Twelve inner components for forming holes for inserting optical fibers were previously arranged in the die with a dimensional accuracy equal to or less than 2 μm. When the slip was cured, a formed material was obtained. The formed material was naturally dried for one night. Then, the formed material was tentatively sintered for an hour at 850° C. Thereafter, the formed material was sintered under vacuum atmosphere (equal to or less than 10−2 Torr).
- Thus obtained sintered material was in a transparent and colorless glass state (referred to as “high purity quartz glass”, hereinafter). The holes provided in the sintered material were polished using a PC wire and diamond slurry so as to form holes with a predetermined hole diameter. Then, the holes were cleaned and a desired fiber array was obtained. Table 1 shows measured results of a distance between the holes for inserting the optical fibers of the above-mentioned fiber array having 12 cores. As shown in Table 1, the holes were arranged with an accuracy of 250 μm±1 μm with respect to a design target value of 250 μm.
TABLE 1 sample distance between holes No. 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 1 250.6 250.2 294.6 249.1 250.3 250.9 249.1 250.6 250.4 249.5 250.5 2 250.1 250.3 250.9 250.4 249.6 250.1 249.1 250.5 249.5 249.9 205.7 3 250.3 250.2 249.8 249.6 250.3 250.8 249.6 249.7 249.3 250.9 250.4 4 250.1 249.8 249.6 250.4 250.6 250.7 249.7 249.3 250.1 250.0 250.4 5 249.4 250.6 250.1 250.3 250.0 249.7 249.9 250.6 250.1 250.2 250.7 - Additionally, the thermal expansion coefficient of the obtained fiber array was 0.52×10−6 /° C., which was almost the same thermal expansion coefficient (0.5×10−6/° C.) of quartz glass that is the material of the optical fibers. Further, the fiber array had a 92% transmission rate of ultraviolet light having wavelength 356 nm.
- An ultraviolet curing type adhesive was filled in the holes for inserting optical fibers of the fiber array made of glass. Thereafter, single-mode optical fibers were inserted in the respective holes. The optical fibers were fixed by irradiating ultraviolet light for 15 minutes.
- An SC type single-core ferrule was fixed on the other ends of the single-mode optical fibers by using a thermosetting adhesive. An optical fiber cable (optical member) was obtained by optically polishing ends of the fiber array and the ends of the SC type single-core ferrule.
- Thus obtained optical fiber cable was maintained for 2000 hours under an atmosphere of 85% humidity and 85 ° C. Then, adhesion strength on the fiber array side was measured. As a result, adhesion strength not less than 12 N through 34 N was maintained. Thus, it was confirmed that the connector component according to the embodiment has high reliability in the adhesive characteristic.
- In the optical member, it is preferable that polarized wave holding fibers are used for the optical fibers, so that an extinction rate is equal to or greater than 25 dB.
- Additionally, in the optical member, it is preferable that each of the thermosetting type adhesive and the ultraviolet curing type adhesive has equal to or less than 0.2 dB insertion loss, equal to or more than 55 dB reflection loss, and equal to or more than 10 N tensile strength.
- The present invention is not limited to the specifically disclosed embodiments, and variations and modifications may be made without departing from the scope of the present invention.
- The present application is based on Japanese priority application No. 2002-072710 filed on Mar. 15, 2002, the entire contents of which are hereby incorporated by reference.
Claims (8)
1. A connector component for optical fibers, said connector component comprising a base material provided with at least two holes for inserting and fixing optical fibers therein,
wherein said base material is made of quartz glass.
2. The connector component for optical fibers as claimed in claim 1 , wherein the quartz glass is high purity quartz glass containing equal to or more than 99.9% SiO2, equal to or less than 10 ppm Al2O3, equal to or less than 1 ppm Li2O, equal to or less than 10 ppm MgO, equal to or less than 10 ppm TiO2, equal to or less than 10 ppm ZrO2 equal to or less than 10 ppm K2O, equal to or less than 10 ppm Na2O, equal to or less than 10 ppm ZnO, equal to or less than 10 ppm CaO, and equal to or less than 10 ppm BaO.
3. The connector component for optical fibers as claimed in claim 1 , wherein a thermal expansion coefficient of the quartz glass is within a range of 0.45˜0.6×10−7/° C.
4. The connector component for optical fibers as claimed in claim 1 , wherein the quartz glass has equal to or more than 90% transmission rate for an ultraviolet light having a wavelength of 356 nm.
5. A manufacturing method for a connector component for optical fibers, said connector component comprising a base material made of quartz glass and provided with at least two holes for inserting and fixing optical fibers, said manufacturing method comprising the steps of:
(a) arranging a plurality of inner components for forming holes for inserting optical fibers in a die for forming an outer form of the connector component with a dimensional accuracy equal to or less than 2 μm;
(b) pouring slurry into said die, said slurry including quartz powder, a resin binder, a dispersant, water and a curing agent;
(c) curing the poured slurry; and
(d) heating the cured slurry under vacuum so as to vitrify the cured slurry to obtain the quartz glass.
6. An optical member, comprising:
optical fibers; and
a connector component for optical fibers, said connector component including a base material made of quartz glass and provided with two or more holes for inserting and fixing the optical fibers,
wherein said connector component is fixed to ends of the optical fibers using epoxy thermosetting type adhesive or ultraviolet curing type adhesive.
7. The optical member as claimed in claim 6 , wherein polarized wave holding fibers are used for the optical fibers, so that an extinction rate is equal to or greater than 25 dB.
8. The optical member as claimed in claim 6 , wherein each of the thermosetting type adhesive and the ultraviolet curing type adhesive has equal to or less than 0.2 dB insertion loss, equal to or more than 55 dB reflection loss, and equal to or more than 10 N tensile strength.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/602,754 US20070065073A1 (en) | 2002-03-15 | 2006-11-21 | Connector component for optical fiber, manufacturing method thereof and optical member |
US13/087,861 US8202010B2 (en) | 2002-03-15 | 2011-04-15 | Connector component for optical fiber, manufacturing method thereof and optical member |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002072710A JP3801933B2 (en) | 2002-03-15 | 2002-03-15 | Manufacturing method of optical member |
JP2002-072710 | 2002-03-15 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/602,754 Division US20070065073A1 (en) | 2002-03-15 | 2006-11-21 | Connector component for optical fiber, manufacturing method thereof and optical member |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030174973A1 true US20030174973A1 (en) | 2003-09-18 |
Family
ID=28035188
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/196,661 Abandoned US20030174973A1 (en) | 2002-03-15 | 2002-07-16 | Connector component for optical fiber, manufacturing method thereof and optical member |
US11/602,754 Abandoned US20070065073A1 (en) | 2002-03-15 | 2006-11-21 | Connector component for optical fiber, manufacturing method thereof and optical member |
US13/087,861 Expired - Lifetime US8202010B2 (en) | 2002-03-15 | 2011-04-15 | Connector component for optical fiber, manufacturing method thereof and optical member |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/602,754 Abandoned US20070065073A1 (en) | 2002-03-15 | 2006-11-21 | Connector component for optical fiber, manufacturing method thereof and optical member |
US13/087,861 Expired - Lifetime US8202010B2 (en) | 2002-03-15 | 2011-04-15 | Connector component for optical fiber, manufacturing method thereof and optical member |
Country Status (4)
Country | Link |
---|---|
US (3) | US20030174973A1 (en) |
JP (1) | JP3801933B2 (en) |
CN (1) | CN1212530C (en) |
DE (1) | DE10233974B4 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040050110A1 (en) * | 2002-08-29 | 2004-03-18 | Berkey George E. | Methods for fabricating optical fibers and optical fiber preforms |
US20040247249A1 (en) * | 2003-04-21 | 2004-12-09 | Gauthier Leo R. | High temperature light guide |
US9341780B2 (en) | 2011-12-09 | 2016-05-17 | Hewlett Packard Enterprise Development Lp | Optical connections |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010134415A (en) * | 2008-10-30 | 2010-06-17 | Kyocera Corp | Multi-fiber connector ferrule for optical communication, method of manufacturing the same and optical fiber pigtail using the connector ferrule |
US7726808B1 (en) | 2009-05-20 | 2010-06-01 | Gentex Optics, Inc. | Rimless spectacle lens bore polishing method and apparatus |
EP2939056A1 (en) * | 2012-12-26 | 2015-11-04 | Commscope Inc. of North Carolina | Flutes for ferrule to fiber bonding |
CN105301704B (en) * | 2015-11-09 | 2017-05-03 | 西北工业大学 | Optical fiber high-precision clamping and positioning device |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4137060A (en) * | 1977-07-18 | 1979-01-30 | Robert Bosch Gmbh | Method of forming a lens at the end of a light guide |
US4157907A (en) * | 1976-01-20 | 1979-06-12 | Kroyer K K K | Method of producing a mouldable material having a high content of a crystallizable glass |
US4680047A (en) * | 1985-03-29 | 1987-07-14 | U.S. Philips Corporation | Method for the manufacture of glass bodies |
US4859224A (en) * | 1986-06-10 | 1989-08-22 | U.S. Philips Corp. | Method of manufacturing glass or ceramic bodies |
US4902328A (en) * | 1986-10-22 | 1990-02-20 | U.S. Philips Corporation | Method of manufacturing shaped bodies from ceramics or glass |
US5063179A (en) * | 1990-03-02 | 1991-11-05 | Cabot Corporation | Process for making non-porous micron-sized high purity silica |
US5120444A (en) * | 1990-03-14 | 1992-06-09 | U.S. Philips Corp. | Method of and devices for manufacturing glass bodies |
US5183489A (en) * | 1990-11-08 | 1993-02-02 | Alcatel Fibres Optiques | Method of making multi-ferrules having a series of channels with parallel axes |
US5216733A (en) * | 1991-03-11 | 1993-06-01 | Nippon Telegraph And Telephone Corporation | Polarization maintaining optical fiber connector including positioning flange and method utilizing same |
US5295210A (en) * | 1992-12-31 | 1994-03-15 | Corning Incorporated | Optical waveguide fiber achromatic coupler |
US5665133A (en) * | 1994-10-14 | 1997-09-09 | Tosoh Corporation | Process for production of pure transparent quartz |
US5710850A (en) * | 1995-06-26 | 1998-01-20 | Sumitomo Electric Industries, Ltd. | Optical fiber coupling member, method of producing the same and method of connecting optical fibers |
US5922099A (en) * | 1997-03-10 | 1999-07-13 | Samsung Electronics Co., Ltd. | Apparatus and method for fabricating tube-shaped glass monolith using sol-gel process |
US6012304A (en) * | 1991-09-30 | 2000-01-11 | Loxley; Ted A. | Sintered quartz glass products and methods for making same |
US6185962B1 (en) * | 1996-05-02 | 2001-02-13 | Owens Corning Fiberglas Technology, Inc. | Method for forming pre-impregnated fibers suitable for processing into a composite article |
US6331081B1 (en) * | 1997-03-13 | 2001-12-18 | Sumitomo Electric Industries, Ltd. | Optical transmission member and manufacturing method therefor |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4031423A (en) * | 1969-04-30 | 1977-06-21 | American Optical Corporation | Channel structure for multi-channel electron multipliers and method of making same |
US3754882A (en) * | 1972-12-01 | 1973-08-28 | Philips Corp | Method of manufacturing a light conductive perforated plate |
US4028082A (en) * | 1976-02-10 | 1977-06-07 | American Optical Corporation | Method of making artificial intraocular lenses with holes |
US4084308A (en) * | 1976-11-22 | 1978-04-18 | Bell Telephone Laboratories, Incorporated | Slicing method in fiber end preparation |
US4261638A (en) * | 1978-10-02 | 1981-04-14 | Bell Laboratories | Optical switch with rotating, reflective, concave surface |
JPS61163133A (en) | 1985-01-07 | 1986-07-23 | Seiko Epson Corp | Preparation of single polarization optical fiber |
CA1321089C (en) * | 1988-05-06 | 1993-08-10 | Adc Telecommunications, Inc. | Optical switch |
JPH05323216A (en) * | 1990-01-19 | 1993-12-07 | Adc Telecommun Inc | Method of assembling optical switch |
JP2849486B2 (en) | 1991-03-11 | 1999-01-20 | 日本電信電話株式会社 | Ferrule for polarization maintaining optical fiber connector |
US5364433A (en) * | 1991-06-29 | 1994-11-15 | Shin-Etsu Quartz Products Company Limited | Optical member of synthetic quartz glass for excimer lasers and method for producing same |
FR2712278B1 (en) | 1993-11-08 | 1995-12-29 | Alcatel Cable Interface | Process for producing a blank for a multiferule made of silica glass, and blank thus obtained. |
US5742720A (en) * | 1995-08-30 | 1998-04-21 | Matsushita Electric Industrial Co., Ltd. | Optical coupling module and method for producing the same |
JPH09243863A (en) | 1996-03-05 | 1997-09-19 | Sumitomo Electric Ind Ltd | Member for two-dimensionally arranging optical fiber and its production |
US5745626A (en) * | 1996-06-20 | 1998-04-28 | Jds Fitel Inc. | Method for and encapsulation of an optical fiber |
US6366720B1 (en) * | 1999-07-09 | 2002-04-02 | Chiaro Networks Ltd. | Integrated optics beam deflector assemblies utilizing side mounting blocks for precise alignment |
JP2001058870A (en) | 1999-08-23 | 2001-03-06 | Kyocera Corp | Sintered quartz and its production |
KR100334763B1 (en) * | 2000-04-18 | 2002-05-03 | 윤종용 | Fabrication method and device of holey optical fiber |
US6379053B1 (en) * | 2000-05-30 | 2002-04-30 | Infineon Technologies North America Corp. | Multi-fiber fiber optic connectors |
US6681473B1 (en) * | 2002-02-15 | 2004-01-27 | Calient Networks, Inc. | Method and apparatus for hermetically sealing fiber array blocks |
-
2002
- 2002-03-15 JP JP2002072710A patent/JP3801933B2/en not_active Expired - Lifetime
- 2002-07-16 US US10/196,661 patent/US20030174973A1/en not_active Abandoned
- 2002-07-22 CN CN02126469.4A patent/CN1212530C/en not_active Expired - Lifetime
- 2002-07-25 DE DE10233974A patent/DE10233974B4/en not_active Expired - Fee Related
-
2006
- 2006-11-21 US US11/602,754 patent/US20070065073A1/en not_active Abandoned
-
2011
- 2011-04-15 US US13/087,861 patent/US8202010B2/en not_active Expired - Lifetime
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4157907A (en) * | 1976-01-20 | 1979-06-12 | Kroyer K K K | Method of producing a mouldable material having a high content of a crystallizable glass |
US4137060A (en) * | 1977-07-18 | 1979-01-30 | Robert Bosch Gmbh | Method of forming a lens at the end of a light guide |
US4680047A (en) * | 1985-03-29 | 1987-07-14 | U.S. Philips Corporation | Method for the manufacture of glass bodies |
US4859224A (en) * | 1986-06-10 | 1989-08-22 | U.S. Philips Corp. | Method of manufacturing glass or ceramic bodies |
US4902328A (en) * | 1986-10-22 | 1990-02-20 | U.S. Philips Corporation | Method of manufacturing shaped bodies from ceramics or glass |
US5063179A (en) * | 1990-03-02 | 1991-11-05 | Cabot Corporation | Process for making non-porous micron-sized high purity silica |
US5120444A (en) * | 1990-03-14 | 1992-06-09 | U.S. Philips Corp. | Method of and devices for manufacturing glass bodies |
US5183489A (en) * | 1990-11-08 | 1993-02-02 | Alcatel Fibres Optiques | Method of making multi-ferrules having a series of channels with parallel axes |
US5216733A (en) * | 1991-03-11 | 1993-06-01 | Nippon Telegraph And Telephone Corporation | Polarization maintaining optical fiber connector including positioning flange and method utilizing same |
US6012304A (en) * | 1991-09-30 | 2000-01-11 | Loxley; Ted A. | Sintered quartz glass products and methods for making same |
US5295210A (en) * | 1992-12-31 | 1994-03-15 | Corning Incorporated | Optical waveguide fiber achromatic coupler |
US5665133A (en) * | 1994-10-14 | 1997-09-09 | Tosoh Corporation | Process for production of pure transparent quartz |
US5710850A (en) * | 1995-06-26 | 1998-01-20 | Sumitomo Electric Industries, Ltd. | Optical fiber coupling member, method of producing the same and method of connecting optical fibers |
US5891210A (en) * | 1995-06-26 | 1999-04-06 | Sumitomo Electric Industries, Ltd. | Method of connecting optical fibers |
US6185962B1 (en) * | 1996-05-02 | 2001-02-13 | Owens Corning Fiberglas Technology, Inc. | Method for forming pre-impregnated fibers suitable for processing into a composite article |
US5922099A (en) * | 1997-03-10 | 1999-07-13 | Samsung Electronics Co., Ltd. | Apparatus and method for fabricating tube-shaped glass monolith using sol-gel process |
US6331081B1 (en) * | 1997-03-13 | 2001-12-18 | Sumitomo Electric Industries, Ltd. | Optical transmission member and manufacturing method therefor |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040050110A1 (en) * | 2002-08-29 | 2004-03-18 | Berkey George E. | Methods for fabricating optical fibers and optical fiber preforms |
US20040247249A1 (en) * | 2003-04-21 | 2004-12-09 | Gauthier Leo R. | High temperature light guide |
US7156559B2 (en) * | 2003-04-21 | 2007-01-02 | The Johns Hopkins University | High temperature light guide |
US9341780B2 (en) | 2011-12-09 | 2016-05-17 | Hewlett Packard Enterprise Development Lp | Optical connections |
Also Published As
Publication number | Publication date |
---|---|
CN1212530C (en) | 2005-07-27 |
JP3801933B2 (en) | 2006-07-26 |
US20070065073A1 (en) | 2007-03-22 |
US20110194819A1 (en) | 2011-08-11 |
CN1445573A (en) | 2003-10-01 |
US8202010B2 (en) | 2012-06-19 |
JP2003270486A (en) | 2003-09-25 |
DE10233974B4 (en) | 2006-04-20 |
DE10233974A1 (en) | 2003-10-09 |
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