JP4076151B2 - Optical connector and assembly method thereof - Google Patents

Optical connector and assembly method thereof Download PDF

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Publication number
JP4076151B2
JP4076151B2 JP2003114023A JP2003114023A JP4076151B2 JP 4076151 B2 JP4076151 B2 JP 4076151B2 JP 2003114023 A JP2003114023 A JP 2003114023A JP 2003114023 A JP2003114023 A JP 2003114023A JP 4076151 B2 JP4076151 B2 JP 4076151B2
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Japan
Prior art keywords
optical fiber
optical connector
fixing means
end face
optical
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JP2003114023A
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Japanese (ja)
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JP2004317926A (en
Inventor
和男 保苅
則夫 村田
裕 村越
憲佳 松本
幸司 柴田
真二 長沢
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エヌ・ティ・ティ・アドバンステクノロジ株式会社
日本電信電話株式会社
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical connector to which single-core and multi-core optical fibers are connected, and an assembling method thereof.
[0002]
[Prior art]
Various optical connectors are used in optical communication systems. Until now, in order to easily attach and detach multi-fiber optical fiber tapes, MT type optical connectors and MPO type optical connectors that can be easily attached and detached by push-pull operation have been put into practical use. Both optical connectors use MT ferrules for connection.
[0003]
An optical connector using an MT ferrule has a structure in which optical fibers to be connected are easily aligned with a guide pin, in order to construct an optical fiber network in terms of simplicity, size, weight, cost, etc. This is a very useful technology.
[0004]
FIG. 7 is a sectional view in the longitudinal direction of an MT connector plug constituting a conventional MT type optical connector.
The structure of the MT type optical connector will be briefly described. The MT connector plug 2 having a multi-fiber ribbon 1 and a clamp spring (not shown in FIG. 7) for fastening the two MT connector plugs 2 together. Configured.
The MT connector plug 2 includes an optical fiber tape 1, a ferrule 4 to which the optical fiber tape 1 is bonded and fixed, and a boot portion 5 that holds the optical fiber tape 1 at an end portion where the MT connector plugs 2 do not face each other. At the end where the MT connector plugs 2 face each other, a guide pin (not shown in FIG. 7) is provided on the ferrule end surface 4a of one MT connector plug 2, and on the ferrule end surface 4a of the other MT connector plug 2 Is provided with a guide pin hole (not shown in FIG. 7) for fitting to the guide pin. Further, the optical fiber tape 1 is provided penetrating in the longitudinal direction of the ferrule 4 so that the cut surface 1d of the optical fiber tape 1 is disposed on the ferrule end surface 4a. With the above structure, the MT connector plugs 2 are correctly arranged by the guide pins and the guide pin holes and fastened by the clamp springs, so that the multi-fiber optical fiber tapes 1 can be connected simultaneously.
[0005]
Next, an outline of a conventional assembly method that is most commonly performed in the MT connector plug 2 will be described with reference to FIG.
First, the main component and the curing agent of the optical fiber thermosetting adhesive are sufficiently stirred to form the thermosetting adhesive 18, and a small amount of the thermosetting adhesive 18 is dropped from the ferrule window 7a. Next, the multi-fiber optical fiber tape 1 from which the coating of the tip portion has been removed is inserted into the fiber hole 9 of the ferrule 4. The fiber hole 9 is formed with fine holes 9a corresponding to the number of cores of the optical fiber tape 1 on the end face 4a side, and groove-shaped fiber installations corresponding to the number of cores of the optical fiber tape 1 are provided on the inner side. A portion 9b is formed. After the optical fiber tape 1 is inserted, in order to bond and fix the ferrule 4 and the optical fiber tape 1, the thermosetting adhesive 18 is dropped again from the ferrule window 7a and filled into the cavity 7b. Then, this is set in a heating device, and the thermosetting adhesive 18 filled in the ferrule 4 is heated and cured for 10 minutes or more. After the thermosetting adhesive 18 is heated and cured, the tip 1a of the optical fiber tape 1 protruding from the end face 4a of the ferrule 4 is cut in the same plane as the end face 4a, and the end face 4a is further cut off from the optical fiber tape 1. The optical connector is completed by polishing together with the cut surface 1d. A top view of the completed MT optical connector is shown in FIG. As described above, the conventional optical connector assembling method has the disadvantage that heating is required in the assembling process, and the assembling time becomes long.
[0006]
On the other hand, various types of adhesives have been developed and put into practical use. Among these, α-cyanoacrylate-based adhesives are known to easily undergo anionic polymerization by anion species such as the surface of an adherend and moisture in the air, and are polymerized and cured in a short time. It is used as an instant adhesive for bonding materials. Furthermore, it is also expected as an adhesive capable of bonding glass such as lenses contained in optical system equipment and engineering plastic in a short time.
[0007]
However, conventional α-cyanoacrylate adhesives have a problem in that long-term reliability is not obtained with respect to adhesion of glass-based materials, and peeling occurs with time. Even when this is used for the MT type optical connector, a problem of peeling similarly occurs. For example, FIG. 9 shows an example in which a conventional α-cyanoacrylate adhesive is dropped from the ferrule window 7a of the MT connector plug 2 and filled into the cavity 7b. As shown in FIG. 9, in the conventional fast-curing adhesive 19 (for example, a conventional α-cyanoacrylate adhesive), the shrinkage strain of the adhesive (curved by arrows in FIG. 9) generated during curing or due to environmental temperature changes. The occurrence of internal stress due to B) becomes greater than the adhesive strength with the adherend (arrow A in FIG. 9), or moisture penetrates into the adhesive surface and lowers the adhesive strength, causing peeling on the adhesive surface. It was.
[0008]
In order to solve such problems of strength reduction and peeling over time, a method of treating a surface to be bonded with an organic silane compound when bonding using an α-cyanoacrylate adhesive is disclosed. (See Patent Document 1). In addition, a method for improving adhesion to glass by adding and mixing organic titanium having a specific composition to α-cyanoacrylate is disclosed (see Patent Document 2). Furthermore, an adhesive composition in which a plasticizer and a silane are added to α-cyanoacrylate to improve adhesion to glass is disclosed (see Patent Document 3).
[0009]
However, even when using these methods, special treatment of the adherend surface is required before bonding, and further, there is no storage stability over time, or the curing speed is significantly reduced during storage. Had.
[0010]
[Patent Document 1]
JP 52-76344 A (pages 1-6)
[Patent Document 2]
JP 58-45140 A (page 1-2)
[Patent Document 3]
JP-T-2001-505235 (page 2-7)
[0011]
[Problems to be solved by the invention]
As described above, the assembly of the conventional MT type optical connector has the disadvantage that a heating process is required and the assembly time becomes long. In addition, the use of an adhesive that can be cured at a high speed improves the conventional defects at the time of assembly of the MT type optical connector. It has been difficult to ensure the reliability of the assembled optical connector against such changes.
[0012]
The present invention has been made in view of the above problems, and an object of the present invention is to provide an optical connector that can be assembled at high speed and has excellent adhesion durability and high reliability, and an assembling method thereof.
[0013]
[Means for Solving the Problems]
An optical connector according to the present invention that solves the above-mentioned problems is a single-core or multi-core optical fiber coated with a curing agent from which an end coating is removed and an adhesive is cured, and a cavity in which the optical fiber is disposed An optical fiber fixing means (ferrule) having
Reaction product of one molecule of a linear polymer having —OH groups at both terminals and two compounds having a polymerizable carbon-carbon unsaturated bond and an isocyanate group in the molecule with respect to 100 parts by weight of α-cyanoacrylate Is mixed with an inorganic filler such as silica or an organic filler such as an elastomer in an α-cyanoacrylate adhesive containing 5 to 40 parts by weight of organic polymer particles insoluble in α-cyanoacrylate. The optical fiber is bonded and fixed to the optical fiber fixing means by filling the adhesive into the cavity and curing at high speed without heating. The curing agent cures the α-cyanoacrylate adhesive.
[0014]
An optical connector according to the present invention that solves the above-described problems is arranged such that it protrudes from the end face of the optical fiber fixing means, is adhesively fixed, and is cut at the same plane as the end face of the optical fiber fixing means. Is polished together with the end face of the optical fiber fixing means.
[0015]
In the optical connector according to the present invention for solving the above-mentioned problems, the end face of the optical fiber cut in advance with high precision is arranged on the same plane as the end face of the optical fiber fixing means polished in advance. It is characterized by being bonded and fixed.
[0017]
The optical connector according to the present invention for solving the above-described problems is characterized in that a silane coupling agent is mixed in a curing agent and cured at high speed.
[0018]
The method of assembling an optical connector according to the present invention for solving the above-mentioned problem is to arrange a single-core or multi-core optical fiber from which the coating of the end is removed, in the cavity of the optical fiber fixing means,
Reaction product of one molecule of a linear polymer having —OH groups at both terminals and two compounds having a polymerizable carbon-carbon unsaturated bond and an isocyanate group in the molecule with respect to 100 parts by weight of α-cyanoacrylate Is mixed with an inorganic filler such as silica or an organic filler such as an elastomer in an α-cyanoacrylate adhesive containing 5 to 40 parts by weight of organic polymer particles insoluble in α-cyanoacrylate. , Fill the cavity with the adhesive , cure at high speed without heating,
The optical fiber is bonded and fixed to the optical fiber fixing means. The curing agent cures the α-cyanoacrylate adhesive.
[0019]
An optical connector assembling method according to the present invention that solves the above-mentioned problems is that an optical fiber is disposed so as to protrude from the end face of the optical fiber fixing means, and is bonded and fixed. It cut | disconnects on a plane, and the front-end | tip part of the cut | disconnected optical fiber is grind | polished with the end surface of an optical fiber fixing means.
[0020]
An optical connector assembling method according to the present invention for solving the above-mentioned problems is provided by cutting an end face of an optical fiber with high accuracy in advance, polishing an end face of the optical fiber fixing means in advance, Are arranged on the same plane and fixed by adhesion.
[0022]
The optical connector assembling method according to the present invention for solving the above-described problems is characterized in that a curing agent containing a silane coupling agent is used and cured at high speed.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, in order to assemble an optical connector such as MT type in a short time, an adhesive having a property of non-heating and high-speed curing is used. Furthermore, a highly reliable optical connector is realized. Embodiments of the optical connector and its assembling method according to the present invention having such characteristics will be described below in detail with reference to the drawings.
[0024]
FIG. 1 is a perspective view of an optical connector showing an example of an embodiment according to the present invention. Here, an MT type optical connector is described as an example here, but the present invention is also applicable to other optical connectors having an equivalent structure. Moreover, it is applicable not only to multi-fiber optical fibers such as optical fiber tapes but also to single-fiber optical fibers.
[0025]
As shown in FIG. 1, the optical connector according to the present invention is mainly composed of two MT connector plugs 2 having a multi-fiber ribbon 1 and a clamp spring 3 for fastening the two MT connector plugs 2 together. Is done.
[0026]
The MT connector plug 2 includes an optical fiber tape 1, a ferrule 4 to which the optical fiber tape 1 is bonded and fixed, and a boot portion 5 that holds the optical fiber tape 1 at an end portion where the MT connector plugs 2 do not face each other. At the end where the MT connector plugs 2 face each other, a guide pin 6a is provided on the ferrule end surface 4a of one MT connector plug 2, and the ferrule end surface 4a of the other MT connector plug 2 is fitted to the guide pin 6a. A guide pin hole 6b is provided (see FIG. 2 because it is not shown in FIG. 1).
[0027]
Further, the optical fiber tape 1 is provided in a longitudinal direction of the ferrule 4 so as to penetrate a cavity portion described later so that the tip portion 1 a of the optical fiber tape 1 is disposed on the ferrule end surface 4 a. Therefore, with the above structure, the MT connector plugs 2 are correctly arranged by the guide pin hole 6b provided in the ferrule 4 and the guide pin 6a inserted in the guide pin hole 6b, and fastened by the clamp spring 3, so that These optical fiber tapes 1 can be connected simultaneously.
[0028]
Also in the optical connector according to the present invention, the optical fiber tape 1, the ferrule 4 and the boot portion 3 are fixed by an adhesive, but the present invention is characterized by using a non-heating fast-curing adhesive 7 as an adhesive. Specifically, the use of an α-cyanoacrylate adhesive having the composition shown below is greatly different from the conventional one.
[0029]
In the present invention, as the non-heat fast curing adhesive 7, and relative ethyl -α- cyanoacrylate, and the base monomer obtained by addition of hydroquinone 500ppm as S0 2 50 ppm and a radical polymerization inhibitor as an anionic polymerization inhibitor, both 10 parts by weight of a reaction product of 2-isocyanate acrylate as 1 molecule of polyester as a linear polymer having an OH group at the terminal, 2 molecules of a polymerizable carbon-carbon unsaturated bond and an isocyanate group in the molecule, As organic polymer particles insoluble in α-cyanoacrylate, an α-cyanoacrylate adhesive containing 20 parts by weight of polyethylene powder (average particle size 50 μm) was used. By assembling the optical connector using this α-cyanoacrylate-based adhesive, heat treatment is unnecessary and the curing time is shortened to improve the working efficiency.
[0030]
In the above-mentioned examples, ethyl-α-cyanoacrylate is used as α-cyanoacrylate, but the present invention is not limited to this. For example, an equivalent such as methyl-α-cyanoacrylate is used. It may be used. Similarly, linear polymers having OH groups at both terminals are not limited to polyesters, but are also equivalents such as modified epoxy resins and polyurethanes, and have polymerizable carbon-carbon unsaturated bonds and isocyanate groups in the molecule. In addition to 2-isocyanate acrylate, not only 2-isocyanate acrylate but also equivalents such as allyl isocyanate, and also organic polymer particles insoluble in α-cyanoacrylate, not only polyethylene powder but also equivalents such as polyethylene A thing may be used.
[0031]
Next, a method for assembling the optical connector according to the present invention using the α-cyanoacrylate adhesive will be described with reference to FIG.
FIG. 2 is an example of an embodiment according to the present invention and is a schematic view showing an optical connector assembling method.
First, the coating on the end of the single-fiber or multi-fiber is removed. FIG. 2 shows a state where the coating of the end portion of the optical fiber tape 1 is removed and the core portion 1b is not exposed. Next, the optical fiber tape 1 from which the coating of the end portion has been removed passes through the boot portion 5 and is further inserted into the fiber hole 9 of the ferrule 4 so that the tip end portion 1a protrudes from the end face 4a. It arrange | positions to the cavity part 7b of the ferrule 4 which is an optical fiber fixing means. The hollow portion 7b is provided with a ferrule window 7a, and the α-cyanoacrylate adhesive is filled into the hollow portion 7b from the ferrule window 7a. The optical fiber tape 1 is preliminarily coated with a curing agent that cures the α-cyanoacrylate-based adhesive, and is cured at a high speed, thereby adhering and fixing the optical fiber tape to the cavity portion 7 b of the ferrule 4. After curing, the tip 1a of the optical fiber tape 1 protruding from the end face 4a is cut in the same plane as the end face 4a, and the end face 4a is further polished to complete the optical connector.
[0032]
FIG. 3, FIG. 4, and FIG. 4 show the change in strength over time of the α-cyanoacrylate adhesive in the examples of the present invention and the environmental resistance characteristics of the MT-type optical connector manufactured using the α-cyanoacrylate adhesive. As shown in FIG.
[0033]
First, a sample in which a heat-resistant glass plate and a PPS (polyphenylene sulfide) plate, which are substantially the same constituent materials as the MT type optical connector, are bonded to each other with a bonding area of 4.2 cm 2 is produced, and the sample is formed at a temperature of 60 ° C. and a humidity of 95% RH. The time-dependent change in shear bond strength when left in this state was measured. A curing agent was applied to each plate, and then the α-cyanoacrylate adhesive was applied and cured. The curing time of the adhesive is about 30 seconds or less, and the shear rate applied at the time of measurement is 5 mm / min. As the curing agent, dimethyl paratoluidine, which is an amine curing agent, was used, and acetone was used as the solvent. As a solvent, ethanol or the like can be used in addition to acetone. The measurement results are shown in FIG. The measurement was performed for 5 samples at a time.
[0034]
For comparison, the same measurement was performed with a commercially available cyanoacrylate adhesive as a conventional adhesive, and the results are also shown in FIG. As is apparent from FIG. 3, the commercially available cyanoacrylate adhesive has an adhesive strength of almost zero when left at a temperature of 60 ° C. and a humidity of 95% RH for one week. In the adhesive, although the strength is slightly lower than the initial value, the adhesive strength is maintained even after 4 weeks. Thus, it was confirmed that the α-cyanoacrylate adhesive has high reliability.
[0035]
Next, in order to confirm the characteristics of the optical connector when the α-cyanoacrylate adhesive is applied to the MT optical connector, a sample of the 4-fiber MT optical connector is prepared using the α-cyanoacrylate adhesive. Produced. The sample was produced using the assembly method described in FIG. Two types of ferrules were used: a type having a ferrule window as shown in FIGS. 1 and 2 and a type having no ferrule window. In the case of a type without a ferrule window, the α-cyanoacrylate adhesive was filled from the boot portion into the ferrule. The curing time of the adhesive is about 30 seconds or less. Moreover, the same thing (dimethyl para toluidine) as the time of measuring shearing adhesive strength was used as a hardening | curing agent, 20 cycles were implemented by temperature -40 degreeC-85 degreeC and humidity 0-95% RH for 1 cycle 6 hours. The measurement was carried out by measuring optical fibers for all three samples of the 4-fiber MT type optical connector.
[0036]
The measurement results are shown in FIGS. 4 and 5 show the optical loss change in each cycle, and Table 1 shows the maximum value of the loss change during the measurement. For comparison, the same measurement was performed on a thermosetting adhesive conventionally used in an MT type optical connector.
[0037]
[Table 1]
[0038]
As is apparent from FIGS. 4 and 5 and Table 1, the characteristics are the same as those obtained using the conventional adhesive, and the loss is sufficiently small with respect to the design standard, confirming that the characteristics are stable. . From the above results, according to the present invention, it is confirmed that the MT type optical connector can be assembled in a short time and can be provided with high reliability against changes in the external environment and the like. did it.
[0039]
FIG. 6 is another example of the embodiment according to the present invention and is a schematic view showing another assembling method of the optical connector.
This is applicable to the MT type optical connector as a high-speed assembly method capable of further shortening the assembly time. That is, as shown in FIG. 6, the ferrule 4 whose ferrule end surface 4a has been polished in advance, and the optical fiber tape 1 in which the coating of the end portion is removed and the end surface (cut surface 1d) is cut in advance with high accuracy. After inserting the front end portion 1a of the optical fiber tape 1 into the fiber hole 9 of the ferrule 4, the dummy ferrule 10 is used to align the cut surface 1a of the optical fiber tape 1 on the same plane as the ferrule end surface 4a. Deploy.
[0040]
Then, the ferrule 4, the optical fiber tape 1, and the boot 5 are bonded and fixed by dropping the non-heated high-speed curable adhesive 8 from the ferrule window 7 a and filling and curing the cavity 7 b. By this assembling method, the polishing step can be omitted at the time of assembling, and the assembling time can be further shortened.
[0041]
The α-cyanoacrylate adhesive can also be applied to the MT optical connector assembling method, and the assembly time of the MT optical connector can be further increased by shortening the adhesion time and omitting the polishing process. In addition, it is possible to provide an MT type optical connector having high reliability against changes in the external environment and the like.
[0042]
In the above-described embodiment, by adding an inorganic filler such as silica to the α-cyanoacrylate adhesive, internal stress generated due to the curing of the adhesive or due to a temperature change can be reduced. The reliability of the optical connector can be further increased. At this time, since the filler to be mixed needs to reduce the viscosity of the adhesive in consideration of the workability of assembling the MT type optical connector, the filler has a large particle size, for example, 1 to several It is preferable to select one having a particle size of μm (1 to 200 μm). The reason why the particle size is 1 to 200 μm is that the viscosity increases when the particle diameter is 1 μm or less, and the filling is poor when the particle diameter is 200 μm or more.
[0043]
Further, in order to reduce the internal stress generated when the adhesive is cured or due to temperature changes, a filler having a relatively low elastic modulus (10 7 to 10 9 dyn / cm 2 ) is selected. For example, organic fillers such as soft rubber particles (such as ethylene elastomer) are used. Here, the reason why the elastic modulus is 10 7 to 10 9 dyn / cm 2 is that if it is smaller than this, the strength becomes small, and if it is larger than this, the generation of stress becomes large. The MT type optical connector manufactured using the α-cyanoacrylate adhesive mixed with the filler selected on the basis of such criteria is highly reliable against environmental changes such as external temperature and humidity changes. Can be secured.
[0044]
Moreover, strength deterioration of adhesive force can be suppressed by using a silane coupling agent. In general, a silane coupling agent is one in which a silicon (Si) atom has an organic functional group such as an amino group or a vinyl group and a hydrolyzable group such as a methoxy group or an ethoxy group in one molecule. An inorganic substance and an organic resin can be combined, and the physical strength and adhesiveness of the material can be improved. Therefore, by using this silane coupling agent mixed in the curing agent, the MT type optical connector can be assembled in a short time without deteriorating the assembly workability, and the external environment and the like. It is possible to provide an MT type optical connector having higher reliability against changes.
[0045]
【The invention's effect】
As described above, in the present invention, since the α-cyanoacrylate adhesive having excellent adhesion durability to glass and the like and excellent in storage stability is used, the optical connector can be assembled in a short time. And an optical connector having high reliability against changes in the external environment or the like. Further, since the curing time can be shortened, the optical connector can be assembled in a short time, and the cost of the optical connector can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of an MT optical connector showing an example of an embodiment according to the present invention.
FIG. 2 is a schematic view of an MT type optical connector assembling method showing an example of an embodiment according to the present invention.
FIG. 3 is a graph showing changes in strength over time of an α-cyanoacrylate adhesive according to the present invention.
FIG. 4 is a graph showing environmental resistance characteristics of an MT type optical connector (with a ferrule window) manufactured using an α-cyanoacrylate adhesive according to the present invention.
FIG. 5 is a graph showing environmental resistance characteristics of an MT-type optical connector (without a ferrule window) manufactured using an α-cyanoacrylate adhesive according to the present invention.
FIG. 6 is a schematic view of an MT type optical connector assembling method showing another example of the embodiment according to the present invention.
FIG. 7 is a cross-sectional view from the side of a conventional MT type optical connector.
FIG. 8 is a top view of a conventional MT type optical connector.
FIG. 9 is a diagram showing a force acting on an adhesive in a ferrule window of a conventional MT type optical connector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical fiber tape 1a Front-end | tip part 1b Core part 1c Tape part 1d Cut surface 2 MT connector plug 3 Clamp spring 4 Ferrule 4a End surface 5 Boot part 6a Guide pin 6b Guide pin hole 7a Ferrule window 7b Cavity part 8 Non-heating fast curing type Adhesive 9 Fiber hole 10 Dummy ferrule

Claims (8)

  1. In an optical connector comprising a single-core or multi-core optical fiber having an end portion removed and a curing agent applied to cure an adhesive, and an optical fiber fixing means having a cavity in which the optical fiber is disposed ,
    For 100 parts by weight of α-cyanoacrylate, a reaction product of one molecule of a linear polymer having —OH groups at both terminals and two molecules of a compound having a polymerizable carbon-carbon unsaturated bond and an isocyanate group in the molecule. A filler is mixed in an α-cyanoacrylate adhesive containing 1 to 30 parts by weight and containing 5 to 40 parts by weight of organic polymer particles insoluble in α-cyanoacrylate, and the cavity is filled with the adhesive. By curing it,
    An optical connector characterized in that the optical fiber is bonded and fixed to the optical fiber fixing means.
  2. The optical connector according to claim 1,
    The tip of the optical fiber, which is disposed so as to protrude from the end face of the optical fiber fixing means, is bonded and fixed, and cut on the same plane as the end face of the optical fiber fixing means, together with the end face of the optical fiber fixing means An optical connector that is polished.
  3. The optical connector according to claim 1,
    The end face of the optical fiber cut in advance with high precision is arranged on the same plane as the end face of the optical fiber fixing means polished in advance, and the optical fiber is bonded and fixed. connector.
  4. The optical connector according to any one of claims 1 to 3 ,
    An optical connector comprising a silane coupling agent mixed in the curing agent.
  5. A single-core or multi-core optical fiber having an end coating removed and a curing agent that cures the adhesive is disposed in the cavity of the optical fiber fixing means,
    Reaction product of one molecule of a linear polymer having —OH groups at both terminals and two compounds having a polymerizable carbon-carbon unsaturated bond and an isocyanate group in the molecule with respect to 100 parts by weight of α-cyanoacrylate 1 to 30 parts by weight , a filler is mixed into an α-cyanoacrylate adhesive containing 5 to 40 parts by weight of organic polymer particles insoluble in α-cyanoacrylate, and the cavity is filled with the adhesive And cured
    An optical connector assembling method, wherein the optical fiber is bonded and fixed to the optical fiber fixing means.
  6. The method of assembling an optical connector according to claim 5 .
    The optical fiber is disposed so as to protrude from the end face of the optical fiber fixing means, and is bonded and fixed.
    Cutting the tip of the optical fiber on the same plane as the end face of the optical fiber fixing means;
    A method for assembling an optical connector, comprising polishing the cut end portion of the optical fiber together with the end face of the optical fiber fixing means.
  7. The method of assembling an optical connector according to claim 5 .
    Cutting the end face of the optical fiber with high accuracy in advance,
    Polishing the end face of the optical fiber fixing means in advance,
    An optical connector assembling method, wherein the end face of the optical fiber and the end face of the optical fiber fixing means are arranged on the same plane and bonded and fixed.
  8. In the assembly method of the optical connector in any one of Claim 5 thru | or 7 ,
    A method of assembling an optical connector, wherein a curing agent containing a silane coupling agent is used.
JP2003114023A 2003-04-18 2003-04-18 Optical connector and assembly method thereof Active JP4076151B2 (en)

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JP4957503B2 (en) * 2007-10-16 2012-06-20 住友電気工業株式会社 Optical module and optical module manufacturing method
EP2548068A4 (en) * 2010-03-16 2017-08-23 OFS Fitel, LLC Multifiber connectors for multicore optical fiber cables
JP2012063648A (en) * 2010-09-17 2012-03-29 Furukawa Electric Co Ltd:The Manufacturing method of optical connector

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