WO1999031166A1 - Gel faiblement reticule et procede de production - Google Patents
Gel faiblement reticule et procede de production Download PDFInfo
- Publication number
- WO1999031166A1 WO1999031166A1 PCT/JP1998/005515 JP9805515W WO9931166A1 WO 1999031166 A1 WO1999031166 A1 WO 1999031166A1 JP 9805515 W JP9805515 W JP 9805515W WO 9931166 A1 WO9931166 A1 WO 9931166A1
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- WO
- WIPO (PCT)
- Prior art keywords
- low
- gel
- density gel
- cross
- syringe
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- 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
- G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
- G02B6/382—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with index-matching medium between light guides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
-
- 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
- G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
Definitions
- the present invention relates to a low crosslink density gel applied to an optical relay conductor used for connecting end faces of an optical fiber, and a method for producing the same.
- an optical fiber connector Conventionally, an optical fiber connector, a fixed-type connecting device, an optical multiplexer / demultiplexer, and the like have been generally used for connecting end faces of optical fibers.
- a mechanical butting method is mainly employed as the connection between the end faces of the optical fibers in the optical fiber connector.
- ferrules are fitted to the element wires (cores) of both optical fibers, respectively, and are formed so as to communicate with both sides of the connector body in a state of being aligned in a straight line with each other.
- the ferrules are inserted into the fitting holes from both sides, and the end faces of the two wires fitted to the ferrules are fixed by abutting each other on the end faces.
- a conductor for optical relay is provided at a connecting portion.
- a lens using a lens or a matching oil as disclosed in JP-A-56-81807.
- optical relay conductor for connection of optical fibers in fixed connection devices and optical multiplexers / demultiplexers, matching oil, matching grease, epoxy resin, or the like is used as an optical relay conductor.
- the conventional method using matching oil as an optical relay conductor has problems such as oil loss and oxidation due to temperature rise and fall, and also has a problem of short life.
- silicone oil is used as the matching oil, it is difficult to prevent outflow due to its creep flow characteristics.
- the resin is hardened by heating or hardened at room temperature, and its performance is maintained for a long time.
- the coloring phenomenon due to oxidation can be avoided.
- it is necessary to mix a curing agent, remove air bubbles, and heat-harden at the time of construction. If there is a defect in the joining of the surfaces, this optical fiber must be discarded and the whole process must be restarted from the beginning, and it is used with a low yield, which is also of low industrial utility It is.
- the present invention has been made in view of the above-described circumstances, and a main object of the present invention is to provide a low bridge capable of effectively suppressing light scattering when joining end faces of strands of an optical fiber.
- An object of the present invention is to provide a density gel and a method for producing the same.
- Another object of the present invention is to provide a low-crosslink density gel capable of effectively suppressing light scattering at a joint between end faces of optical fibers and a method for producing the same.
- Another object of the present invention is to provide a low-crosslink density gel which does not flow out even if the temperature rises and falls due to a change in the use environment, and a method for producing the same.
- a method for producing a low-crosslinking density gel includes the steps of: adjusting a soft silicone gel material to a predetermined refractive index; And a reaction step of cross-linking the soft silicone gel material prepared in the above at a bonding region having a low cross-linking density to form a low cross-linking density gel.
- the method for producing a low-crosslinking density gel according to the present invention is characterized in that, in the blending step, the predetermined refractive index is set to be substantially the same as a refractive index of a strand of an optical fiber to be connected. And are doing.
- a low-crosslinking density gel it is characterized by using a polyorganosiloxane having a terminal bull group as the main ingredient of the corn gel material.
- the method for producing a low-crosslinking density gel according to the present invention is characterized in that a crosslinking agent is added in the reaction step.
- the method for producing a low-crosslinking density gel according to the present invention is characterized in that a polyorganosiloxane having atom-bonded hydrogen is added as the crosslinking agent. Further, in the method for producing a low-crosslinking density gel according to the present invention, the blending step and the reaction step are performed in a clean room.
- the method for producing a low cross-linking density gel includes a compounding step of adjusting the soft silicone gel material to a predetermined refractive index, and adding a crosslinking agent to the soft silicone gel material adjusted in the compounding step.
- a production step of producing a preparation a filling step of filling the preparation into a syringe; a sealing step of sealing the syringe; and heating the sealed syringe to form a bonding region having a low crosslinking density.
- a reaction step of producing a low cross-linking density gel in the syringe includes a compounding step of adjusting the soft silicone gel material to a predetermined refractive index, and adding a crosslinking agent to the soft silicone gel material adjusted in the compounding step.
- the syringe in the sealing step, is sealed by attaching a cap.
- the syringe may be configured such that after the low-crosslinking density gel is generated inside, the cap attached to the low-crosslinking gel is replaced with a nozzle to reduce the low crosslinking density gel. It is characterized by being attached to a dispenser for dispensing a fixed amount of gel.
- the low crosslink density gel according to the present invention is characterized in that it is produced by subjecting a soft silicone gel material adjusted to a predetermined refractive index to an addition reaction and crosslinking at a low crosslink density in a bonding region.
- the predetermined refractive index is set to be substantially the same as the refractive index of a strand of an optical fiber to be connected.
- the soft silicone gel material is a polyorganosiloxane having a Bier group at a terminal.
- the low crosslink density gel according to the present invention is characterized in that, prior to the crosslink reaction, a crosslinking agent is added and an addition reaction is performed with a platinum catalyst.
- the cross-linking agent is a polyorganosiloxane having atom-bonded hydrogen.
- the low-crosslinking density gel according to the present invention is characterized in that it is produced by encapsulating in a syringe at the time of the crosslinking reaction, followed by heating to effect an addition reaction. Further, the low crosslink density gel according to the present invention is characterized in that it is manufactured in a clean room. Summary of the Invention
- the first requirement for a material used to connect the end faces of an optical fiber is that the material be easily deformed during the connection work, such as an elastic body, and that the thickness be extremely small. In addition, it must not flow like a normal viscous substance or liquid, and contains a substance that hinders the light path, such as fillers, dirt, bubbles, etc. with different refractive indexes. It must not be.
- the second requirement is that the substance be able to withstand fluctuations in the external environment such as temperature, humidity, pressure, and vibration.
- the third requirement is that no ingress of dust, vapor, water, etc. into this material is allowed.
- connection using this substance must be performed easily and within a short time. Specifically, it is necessary to avoid the need for temperature rise for vacuum defoaming and curing required for connection work via epoxy resin.
- the inventor of the present application has developed various types of elastic bodies, Investigating the structure of the viscous material, focusing on the polymer having a three-dimensional network structure insoluble in the solvent and the gel structure that is the swollen body, A silicone gel material is selected as a base material, and the base material is gelled at a low cross-link density, and while maintaining fluidity, a low cross-link density gel (having the shape-retaining property characteristic of a gel elastic body) ( (A gel-fluid intermediate) has been established.
- a gel-fluid intermediate A gel-fluid intermediate
- the low cross-link density gel is produced as follows. Using a transparent soft silicone gel material with a predetermined refractive index as the main ingredient, a low-crosslink density gel that is tacky and capable of minimal flow is obtained by an addition reaction in a bonding region with low crosslink density. Obtainable. As a result of the addition reaction in the bonding region having a low cross-linking density, the total amount of active hydrogen contributes to the reaction, so that there is an advantage that the presence of free hydrogen is eliminated.
- a polyorganosiloxane having an atom-bonded hydrogen is added as a crosslinking agent to a polyorganosiloxane having a vinyl group at a terminal, which is a composition of the main agent, and crosslinking is performed by a platinum catalyst.
- the range of the crosslinking density was determined by the amount of the crosslinking agent, and the final crosslinking density could be controlled almost exactly.
- the cross-linking region of the low cross-link density gel ranges from 30% to 10% of the theoretical equivalent of the polyorganosiloxane containing an atom-bonded hydrogen.
- the gel When the gel is manufactured beyond the cross-linking region described above, the gel exhibits properties closer to an elastic body as the ratio of the cross-linking agent increases, and as a result, the gel loses fluidity and has a breaking point. This is not desirable. On the other hand, if the gel is manufactured below the cross-linking area, the gel will have a greater degree of freedom for the non-cross-linked base material, and as a result, the behavior as a fluid will be remarkable, and the creep flow peculiar to silicone will occur. It will be preferable.
- the refractive index of the low-crosslinking density gel can be adjusted to a value substantially equal to the refractive index of the core of various optical fibers by adjusting the refractive index of the transparent silicone oligomer serving as the main agent in advance. As a result, it is possible to minimize the light loss caused by light reflection and scattering due to the difference in refractive index between the core of the optical fiber to be connected and the low bridge density gel.
- the distance between the end faces of the core is preferably as short as possible.
- the low-crosslinking density gel of the present invention easily flows and deforms due to pressure welding, reliably eliminates the air layer between the end faces of the core, and can fill in fine scratches, polishing marks, and the like. Light loss due to the presence can be minimized.
- Oxidation Does not oxidize. Stable to most chemicals;
- the low-crosslinking density gel is used in an extremely narrow region where the diameter of the optical fiber core is 10 to 50 / m, there should be no adhesion of fine dust or the like on the surface. No. In this manufacturing process, an environment in which foreign matter such as dust is allowed is not allowed. For this reason, in order for the low crosslinked density gel to be used as a conductor for optical relay, the container used to produce this low crosslinked density gel must be a container ( Syringe). In other words, it is important that the prepared material once filled in a container be kept in a sealed state from the reaction process to the actual use.
- this container has at least a cylindrical body whose inner peripheral surface is straight and whose both ends are open, and one open end of which is Since it serves as a material injection port or a discharge port for low-crosslinking density gel, it has a dual-purpose mounting section to which a sealing cap for manufacturing or a nozzle for use can be selectively attached. Sealing packing, which becomes a receiving part when is filled, is stored movably along the axial direction.
- the material of the container and the packing for sealing may be any material as long as it does not inhibit the addition reaction of silicone.
- FIG. 1 is a vertical cross-sectional view showing a configuration of a syringe in a state of functioning as a reaction vessel when the production method for producing a low crosslinked density gel according to the present invention is performed.
- FIG. 4 is a longitudinal sectional view showing a configuration of a syringe in a state where the syringe functions as a storage container when storing a density gel,
- Fig. 3 is a longitudinal sectional view showing an intermediate state when a preparation is injected into a syringe
- Fig. 4 is a longitudinal sectional view showing a dispenser configuration for quantitatively discharging a low-crosslink density gel.
- FIG. 5 is a longitudinal cross-sectional view showing the dispenser in a state where the piston rod has been sent from the state shown in FIG. 4 and all the low-crosslink density gel in the syringe has been discharged.
- a transparent soft silicone gel material as a base material specifically, a transparent silicone oligomer is refracted.
- the ratio is adjusted so as to be in the range of 1.43 to 1.50, and the transparent silicone oligomer thus adjusted, and the atom-bonded hydrogen-containing polyorganosiloxane added as a crosslinking agent to the base material, Is subjected to an addition reaction using a platinum catalyst in a binding region having a low crosslinking density in which the addition ratio of the crosslinking agent is 30% equivalent to prepare a preparation.
- the preparation thus prepared was filled into the syringe 10 shown in Fig. 1 and crosslinked in a thermostat at a maximum temperature of 100 ° C and a reaction time of at least 1 hour and a maximum of 6 hours.
- a low cross-link density gel having low viscosity and three-dimensional cross-linkability, yet having adhesiveness and capable of minimal flow is obtained in the syringe 10.
- Such a production method is carried out in a clean room, and it is preferable that all the storage, preparation, filling into the syringe 10 and the reaction process of the raw materials are performed in the clean room.
- the low crosslink density gel produced as described above has the following physical properties.
- Composition Silicone mixture ( ⁇ ) Refractive index 1.46 (adjustable within the range from 1.43 to 1.50)
- the low-crosslinking density gel having such physical properties has the following effects in a state used for a conductor for optical relay.
- connection loss could be reduced to about one-tenth and the transmittance could be improved by nearly 30% as compared with the case of the mechanical butting method.
- results of a comparative experiment in an experimental example for verifying the light transmittance of a low cross-link density gel are as follows. Light Polished state of the end face Light transmittance when a low cross-link density gel is just abutted Light transmittance when
- a low-crosslinking density gel is a condensate that is an intermediate between an elastic body and a liquid.It has an extremely low-density cross-linking structure, yet is sticky, deforms freely under pressure, and It comes into close contact with the pressure body and returns to its original shape when the pressure is released. Softens by heating-does not fluidize. Also, chemically, since there is no free hydrogen as a tentacle, there are very few factors that hinder the light path without binding to the core-clad composition of the optical fiber.
- the low cross-linking density gel sealed as an optical relay conductor at the connection of the optical fiber fills the unevenness of the end face of the core of the optical fiber with the bonding pressure, and the reflection and scattering of light are reduced. It is stable for a long time without spills.
- a small amount of the low-crosslinking gel was sandwiched between a pair of glass plates in a small amount, placed vertically in a thermostat at 120 ° C., and stored for 1000 hours. After that, the displacement state of both glass plates was measured, but no displacement or fluidization was observed. Next, approximately 5 mg of the low crosslink density gel was sealed in the FC type optical fiber connector, and the operation of attaching and detaching the optical fiber was repeated 50 times, and the light transmittance was measured each time. The original transmittance was maintained up to 20 times, and after 20 times, slight variation was observed, but this was not in the range that hinders practicality.
- FC-type optical fiber connector was removed from the outer socket, and the optical fiber was dropped into water with the optical fiber connected by a structure consisting of only a ferrule and a sleeve, and the low-crosslink density gel was exposed to water.
- the light transmittance was measured as it was, this value was stable without change over time.
- the conductor for optical relaying which is sealed in the connection portion of the optical fiber with the low cross-linking density gel, can sufficiently withstand temperature, humidity, pressure, vibration, dust, water, steam, and the like. It can contribute to the simplification of the structure of conventional optical connectors, fixed connection devices, optical multiplexers / demultiplexers, etc., and has extremely high industrial applicability. Description of syringe 10 ⁇
- the above-described syringe 10 is used for the following two purposes. That is,
- a nozzle 20 is attached to the discharge end of this syringe 10 as shown in Fig. 2 to supply (coat) the manufactured low-crosslinking density gel to the connection site.
- a storage container to be incorporated in a dispenser.
- the syringe 10 includes a cylindrical syringe main body 12.
- the syringe main body 12 is formed to have a straight inner peripheral surface and open at both ends.
- the syringe body 12 has a uniform thin thickness, and thus has a straight outer peripheral surface.
- the opening on the left side of the syringe body 12 in the figure is commonly defined as an injection opening into which the above-described preparation 14 is injected and a discharge opening from which the low-crosslinking density gel is discharged.
- An external thread 12 2 is threaded on the outer peripheral surface of the end where the opening is defined.
- a cap 16 is detachably attached to the outer periphery of the injection / discharge opening. For this reason, a female screw 16 A that can be screwed to the male screw 12 A is threaded on the inner peripheral surface of the cap 16.
- a sealing packing 18, which serves as a receiving portion when the above-mentioned preparation 14 is filled is housed movably in the axial direction.
- the syringe 10 filled with the preparation 14 in this way is then placed as it is in a thermostat (not shown), where it is heated under predetermined heating conditions. Due to this heating, the preparation 14 in the syringe 10 undergoes an addition reaction to form a low cross-link density gel 22.
- the low bridge density gel 22 that has been subjected to an additional reaction in a separate reaction container is sucked up with, for example, a syringe-shaped thing and then injected into such a syringe 10 and injected.
- air bubbles may be mixed into the low cross-linked density gel 22 at the time of injection.
- a unique effect can be obtained by producing a low-crosslinking density gel 22 by subjecting the preparation 14 to an addition reaction in a syringe 10 serving as a storage container to be attached to the dispenser 30 described later. Will be done.
- the dispenser 30 includes a hollow cylindrical outer cylinder 32 in which the above-described syringe 10 is accommodated.
- the outer cylinder 32 is formed such that the left end in the drawing is closed and the right end is completely open.
- a through hole 34 through which the nozzle 20 attached to the syringe 10 described above is inserted is formed in a state penetrating in the thickness direction.
- the left end surface of the syringe 10 housed in the outer cylinder 32 abuts on the left side of the inner peripheral surface of the outer cylinder 32 in the drawing, and the outer cylinder 3 2 of the syringe 10
- a step 36 for defining the position inside is formed.
- a female screw 32A is threaded on the inner peripheral surface of the right end of the outer cylinder 32 in the drawing.
- a mounting block 40 in which a later-described piston rod 38 is supported so as to be able to advance and retreat along the axial direction is mounted in the right end of the outer cylinder 32 in the drawing.
- the outer peripheral surface of the mounting block 40 is divided into a left part and a right part in the figure, and the left part is formed larger in diameter than the right part.
- a male screw 40 A screwed to the above-described female screw 32 A is threaded, and the female screw 32 A and the male screw 4 OA are screwed together. by, mounting block 4 0 will be fixedly attached to the outer cylinder 3 2.
- a center hole 40 mm is formed in the center of the mounting block 40 so as to extend along the axial direction, and a lead groove 40 mm is formed in the inner peripheral surface of the center hole 40 mm. C is threaded.
- a piston rod 38 is inserted through the center hole 40 ⁇ so as to be able to advance and retreat in the axial direction. Groove 38 mm is threaded. As described above, the piston rod 38 is supported by the mounting block 40 via the lead grooves 38 ⁇ and 40 C which are screwed to each other, so that when the mounting block 40 is fixed, The mouth opening 38 moves back and forth in the axial direction by being rotated around the axis.
- the left end of the piston hole 38 in the figure is in contact with the seal packing 18 in the syringe 10 attached to the outer cylinder 32 from the right side.
- the packing for sealing 18 is pushed to the left in the figure, and the low-crosslinking density gel 22 contained in the syringe 10 is pressed, and this is applied to the tip of the nozzle 20. It is possible to discharge from the formed discharge outlet. That is, by mounting the syringe 10 functioning as a storage container in the dispenser 30, the packing 18 for sealing functions as a cylinder head.
- a slot nut 42 is fixedly attached to the right end of the biston opening 38 in the drawing via a bolt 44.
- the rotary cylinder 46 is attached so as to cover the piston rod 38 from the right side in the figure.
- a spline groove 46 ⁇ is formed on the inner peripheral surface of the rotary cylinder 46, and the spline groove 46 A is engaged with an engagement groove 42 A formed on the outer peripheral surface of the slit nut 42.
- the left part of the rotary cylinder 46 in the drawing extends to a position facing the radially outward of the outer peripheral surface of the small-diameter portion on the right side of the mounting block 40 described above. And this In order to lock the rotating cylinder 46 of the mounting block 40 at a rotating position at a predetermined angle, the outer peripheral surface of the small diameter portion of the mounting block 40 is provided with a recess 4 for defining the rotating position at a predetermined angle along the circumferential direction. 8 are formed in large numbers.
- the rotating cylinder 46 is provided with a locking ring 50 having a tip portion that selectively engages with the recess 48.
- the locking ring 50 is formed of a spring member, and the distal end thereof is set so as to elastically engage with the recess 48.
- the locking ring 50 is a so-called snap ring that regulates the rotation angle of the rotary cylinder 46 and locks the rotary cylinder 46 so that it does not fall off the mounting block 40 in the axial direction. It is also set to fulfill the function of.
- the state in which the distal end of the locking ring 50 is engaged with the certain recess 48 is elastically held, whereby the rotating position of the rotary cylinder 46 is also locked energetically. Will be done.
- the tip of the locking ring 50 is elastically deformed and comes out of the recess 48 which has been engaged so far. After being rotated by the angle, the adjacent recesses 48 will be engaged again. In this way, the rotating cylinder 46 is rotated by a predetermined angle and its position is elastically held, so that the low crosslink density gel 22 in the syringe 10 has an amount corresponding to the rotation of the rotating cylinder 46. Therefore, the ink is discharged from the tip of the nozzle 20.
- the rotating cylinder 46 continues to rotate, and as shown in FIG. 5, the cylinder head 18 moves to the left end in the syringe 10 to discharge the low crosslink density gel 22 in the syringe 10. It has been exhausted.
- the rotary cylinder 46 is made of a transparent material, and the advance / retreat position (that is, the axial position) of the internal biston rod 38 can be visually checked.
- a low cross-linking density gel 22 is filled into the outer cylinder 32 through the above-described manufacturing method, and a syringe 10 having a nozzle 20 replaced is inserted into the tip thereof. From the insertion hole 34. After that, the mounting block 40 to which the piston rod 38 has been attached in advance is screwed into the male screw 4 OA and the female screw 32 A of the outer cylinder 32, and fixed to the outer cylinder 32. Attach it. At this time, the tip of the piston rod 38 does not accidentally abut the cylinder head 18 in the syringe 10 and the low-crosslinking density gel 22 filled therein does not leak from the nozzle 20. Thus, the piston rod 38 is retracted to the position where the piston rod 38 enters the mounting block 40 most.
- the slot nut 42 is fixedly attached to the rear end of the piston rod 38 via the bolt 44, and the rotary cylinder 46 is inserted from the right side in the figure. Insert so that it is located on the outer circumference of block 40.
- a locking ring 50 is attached to the outer peripheral surface of the distal end of the rotary cylinder 46, and the distal end of the locking ring 50 is engaged with one of the recesses 48. In this way, the rotating cylinder 46 is prevented from falling off from the mounting block 40 force, and is elastically held at the current rotational position.
- an FC-type optical fiber connector (hereinafter simply referred to as a connector) in which a low bridge density gel 22 is encapsulated as an optical relay conductor.
- the structure of the connector 60 is stipulated by the Japanese Industrial Standards (JIS).
- JIS Japanese Industrial Standards
- the FC type the two optical fibers 62 A, 62
- the wires 64 A and 64 B are exposed in the optical repeater conductor 66 without any ferrules. Inserted.
- the connector 60 includes a split cylindrical adapter 68, and the adapter 68 is formed in a hollow cylindrical shape with both ends opened.
- An optical relay conductor 66 is fitted into the central through hole of the adapter 68 in a state of being located at the center in the axial direction.
- the optical relay conductor 66 is made of a plastic sleeve 70 and a low cross-link density gel 22 sealed in the sleeve 70 by using the dispenser 30 described above. It is composed of
- the center through-hole of the adapter 68 is located at the center in the axial direction, and the first through-hole portion 68 A into which the optical relay conductor 66 described above is tightly fitted, and A second through-hole portion 86 B, which is adjacent to the right side of the first through-hole portion 68 in the drawing and has a smaller diameter than the first through-hole portion 86 A;
- the third through-hole portion 8 6 is formed adjacent to the left side of the portion 86 A in the drawing, is formed to be larger in diameter than the first through-hole portion 86 A, and into which a cushion ring 72 described later is tightly fitted.
- the third through-hole portion 86C is adjacent to the left side in the drawing, is opened at the left end surface of the adapter 68, and is formed to be larger in diameter than the second through-hole portion 86C,
- An adapter 6 is adjacent to the fourth through hole 86 D into which a first fitting 74 to be described later is removably fitted and the second through hole 86 B described above on the right side in the drawing. 8 and has a diameter larger than that of the second through hole 6 8 B And a fifth through-hole portion 68E into which a second fitting 76 to be described later is detachably fitted.
- the first and second fittings 74, 76 described above are formed in the same shape, and both optical fibers 62, 64A and 64B project from the end faces in a bare state.
- the first and second fittings 74, 76 are fitted in the fourth and fifth through-holes 68D, 68E, respectively, and the corresponding fixing nuts 78, respectively. , 80 so that the fitted state to the adapter 68 is maintained, respectively.
- the optical relay conductor 66 in which the low crosslink density gel 22 is sealed is inserted into the center through hole of the adapter 68 from the left side in the figure. It fits tightly into the first through hole 68A. Then, the optical relay conductor 66 is brought into contact with the step portion with the second through-hole portion 68B to define the fitting position. Then, similarly, the attachment ring 72 is inserted into the center through hole from the left side in the figure, and is tightly fitted into the third through hole 68C. Then, the cushion ring 72 is brought into contact with the optical relay conductor 66 to maintain the fitted state of the optical relay conductor 66.
- the first fitting 74 into which the one optical fiber 62 A is fitted is inserted into the fourth through-hole portion 68 D from the left in the figure, and the first fixing nut is inserted. According to 78, the fitted state is maintained. In this manner, with the first fitting 74 fitted in the adapter 68, as shown in the figure, the distal end face of the strand 64B protruding from the optical fiber 62A held therein. Will enter the low crosslink density gel 22 of the optical relay conductor 66.
- the second fitting 76 to which the other optical fiber 62B is fitted is fitted into the fifth through hole 68E from the right side in the figure, and the second fixing nut 80 is inserted. Thereby, the fitted state is maintained.
- the distal end face of the strand 64B protruding from the optical fiber 62B held therein is formed as shown in FIG.
- the polymer enters the low crosslink density gel 22 of the optical relay conductor 66.
- the tip surfaces of the strands 64 A and 64 B enter the low crosslink density gel 22, but the strands 64 A and The projecting length of 64 B is set so that the first and second fittings 74, 76 are fitted to the adapter 68, respectively, and both end faces are just opposite to each other. Have been. Thus, both wires 6 4 A, / JP98 / 055t5
- both ends must be accurately positioned in the case of the conventional mechanical butting method. Compared with the necessity of abutting, the cutting position can be set rather smoothly, thereby improving the workability.
- the low-crosslinking density gel 22 is sealed in such an optical relay conductor 66, even if the end faces of both strands 64A and 64B are not closely opposed to each other, both ends are not required.
- the low-crosslink density gel 22 intervenes between the surfaces, and as described above, the low-crosslink density gel 22 allows the transmission from one optical fiber 62A to the other optical fiber 62B. Loss of the generated light at the joint portion of the connector 60 can be minimized.
- the optical relay conductor 66 includes a sleeve 70 and a low cross-linking density gel 22 sealed in the sleeve 70.
- the low-crosslink density gel 22 itself may be used to constitute the conductor for optical relay without using the sleeve 70.
- the low cross-link density gel 22 is sealed in the sleeve 70 of the optical relay conductor 66 mounted on the connector 60 via the dispenser 30.
- the present invention is not limited to such a configuration, and can be sealed via a gel injection device of another configuration.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69835344T DE69835344T2 (de) | 1998-12-07 | 1998-12-07 | Gel mit niedriger Vernetzungsdichte und Verfahren zu dessen Herstellung |
JP53233599A JP4019385B2 (ja) | 1997-12-12 | 1998-12-07 | 低架橋密度ジェル、及び、これの製造方法 |
EP98957199A EP0960899B1 (en) | 1997-12-12 | 1998-12-07 | Low cross-linking-density gel and process for producing the same |
US09/367,483 US6797797B2 (en) | 1997-12-12 | 1998-12-07 | Low cross-linking-density gel and process for producing the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/369768 | 1997-12-12 | ||
JP36976897 | 1997-12-12 | ||
JP15511398 | 1998-04-28 | ||
JP10/155113 | 1998-04-28 |
Publications (2)
Publication Number | Publication Date |
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WO1999031166A1 true WO1999031166A1 (fr) | 1999-06-24 |
WO1999031166A8 WO1999031166A8 (fr) | 1999-07-29 |
Family
ID=26483195
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005515 WO1999031166A1 (fr) | 1997-12-12 | 1998-12-07 | Gel faiblement reticule et procede de production |
PCT/JP1998/005516 WO1999030984A1 (fr) | 1997-12-12 | 1998-12-07 | Distributeur et connecteur a fibres optiques |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005516 WO1999030984A1 (fr) | 1997-12-12 | 1998-12-07 | Distributeur et connecteur a fibres optiques |
Country Status (5)
Country | Link |
---|---|
US (2) | US6797797B2 (ja) |
EP (2) | EP0962400B1 (ja) |
JP (2) | JP4069261B2 (ja) |
DE (1) | DE69829168T2 (ja) |
WO (2) | WO1999031166A1 (ja) |
Families Citing this family (10)
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US9335532B2 (en) * | 2001-10-16 | 2016-05-10 | Hamilton Thorne, Inc. | Laser assembly for use with a microscope |
US7315418B2 (en) * | 2005-03-31 | 2008-01-01 | 3M Innovative Properties Company | Polarizing beam splitter assembly having reduced stress |
US8183184B2 (en) * | 2006-09-05 | 2012-05-22 | University Of Kansas | Polyelectrolyte complexes for oil and gas applications |
JP5676104B2 (ja) * | 2006-09-29 | 2015-02-25 | スリーエム イノベイティブ プロパティズ カンパニー | ポリマーベースの光学素子におけるアーチファクトの生成を抑制する接着剤 |
EP2447750A1 (en) * | 2010-10-27 | 2012-05-02 | Alcatel Lucent | Assembly Comprising At Least One Optical Fibre And A Mounting Device |
US8985867B2 (en) | 2011-09-07 | 2015-03-24 | Adc Telecommunications, Inc. | Optical fiber connection system |
WO2013036566A1 (en) * | 2011-09-09 | 2013-03-14 | Ams Research Corporation | Split surgical laser fiber |
CN106459588B (zh) | 2014-06-23 | 2019-11-12 | 信越化学工业株式会社 | 硅氧烷组合物及其制造方法 |
DE102014012171B4 (de) * | 2014-08-18 | 2018-11-08 | Edwin Kreuzeder | Vorrichtung zum Auspressen von viskosen Massen aus Behältern |
CN109893439B (zh) * | 2019-04-10 | 2021-08-10 | 重庆工商大学 | 一种多功能定量取药药瓶 |
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- 1998-12-07 EP EP98957200A patent/EP0962400B1/en not_active Expired - Lifetime
- 1998-12-07 JP JP53233699A patent/JP4069261B2/ja not_active Expired - Fee Related
- 1998-12-07 WO PCT/JP1998/005515 patent/WO1999031166A1/ja active IP Right Grant
- 1998-12-07 EP EP98957199A patent/EP0960899B1/en not_active Expired - Lifetime
- 1998-12-07 US US09/367,483 patent/US6797797B2/en not_active Expired - Fee Related
- 1998-12-07 DE DE69829168T patent/DE69829168T2/de not_active Expired - Fee Related
- 1998-12-07 WO PCT/JP1998/005516 patent/WO1999030984A1/ja active IP Right Grant
- 1998-12-07 JP JP53233599A patent/JP4019385B2/ja not_active Expired - Fee Related
- 1998-12-07 US US09/367,482 patent/US6367986B1/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP0962400B1 (en) | 2005-03-02 |
EP0960899A4 (en) | 2001-08-08 |
JP4069261B2 (ja) | 2008-04-02 |
DE69829168T2 (de) | 2005-12-29 |
JP4019385B2 (ja) | 2007-12-12 |
WO1999031166A8 (fr) | 1999-07-29 |
EP0960899A1 (en) | 1999-12-01 |
EP0962400A1 (en) | 1999-12-08 |
US6797797B2 (en) | 2004-09-28 |
WO1999030984A1 (fr) | 1999-06-24 |
DE69829168D1 (de) | 2005-04-07 |
EP0962400A4 (en) | 2001-10-17 |
US6367986B1 (en) | 2002-04-09 |
US20030191266A1 (en) | 2003-10-09 |
EP0960899B1 (en) | 2006-07-26 |
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