35results about "Fibre mechanical structures" patented technology

Techniques for monitoring the quality (e.g., optical and mechanical properties) in optical waveguides (e.g., photonic crystal fibers) are disclosed. Additionally, techniques for detecting and localizing defects in the waveguides are also described. Pulses of light are launched into one end of an optical waveguide. The amount of light scattered out of the same end of the waveguide (i.e., a backscattered or reflected signal) is monitored at certain wavelengths specific to the spectral characteristics of the waveguide. Transmission characteristics and defect localization can be determined from the backscattered signal.

The invention discloses a cable peeling device, which relates to the technical field of cable recovery. The cable peeling device comprises a bottom plate, wherein first fixed plates, a cutting block, a second fixed plate and a motor box are installed on the bottom plate from left to right in sequence; a first rotation roller is rotatably connected between the first fixed plates; the center of the cutting block is provided with a round cutting groove; the cutting block is also provided with a plurality of first cutting knives; the first cutting knives are installed along the radius direction of the cutting groove and can move along the radius direction of the cutting groove; a cutting cylinder is rotatably connected in the second fixed plate; one end of the cutting cylinder is provided with a second cutting knife; one end of the cutting cylinder penetrates through the motor box; the motor box provides rotation power for the cutting cylinder. According to the design, the cable can be continuously peeled, working efficiency is improved, in addition, the device automatically operates, manpower is reduced, and cost is reduced.

The invention discloses an inserting pin component of an optical cable connector and a tensile connecting structure of the inserting pin component and the optical cable. A conical surface with gradually reduced external diameter is arranged on the outer surface of the tail part of a rear sleeve of an inserting pin component; a conical sleeve of which an inner ring is in a conical surface closed structure is correspondingly sleeved on the conical surface; a screw nut is movably assembled on an outer ring of the conical sleeve; an axial meshed structure is arranged on the combining surface between the inner ring of the screw nut and the outer ring of the conical sleeve; screwing match structures are arranged on the inner wall at the front end of the screw nut and the outer wall of the rear sleeve; an aramid fiber exposed from the cutting position of the outer skin of the optical cable is clamped between the outer surface of the conical surface of the tail part of the rear sleeve and the inner ring of the conical sleeve; the aramid fiber, the conical sleeve and the rear sleeve are fixed into a whole by the function of screwing locked force between the screw nut and the rear sleeve; when the optical cable is pulled by external force, the pulling force is exerted on the conical sleeve and the rear sleeve by the aramid fiber, and a center optical fiber can not be pulled; when a flange or the rear sleeve of the inserting pin component is pulled, the whole optical fiber can be pulled to move by the aramid fiber, thereby being free from the damage of the center optical fiber by pulling and leading the installation of the inserting pin component to be more convenient.

The invention discloses a longitudinal seal underwater optical cable, which comprises an optical unit, a reinforcing device and a waterproof sheath, wherein a waterproof and anticorrosive material is filled in intervals among the optical unit, the reinforcing device and the waterproof sheath; the reinforcing device comprises a central line and the optical unit reinforcing device comprising a plurality of reinforcing pieces with circular sections, the optical unit and the plurality of reinforcing pieces with circular sections are closely arranged around the central line in a concentric circle manner, and the waterproof and anticorrosive material is solid at normal temperature. Through utilizing the technical scheme disclosed by the invention, the optical unit is distributed between the reinforcing pieces to generate very high effect of side pressure resistance and water leakage resistance. The longitudinal seal underwater optical cable disclosed by the invention has the advantages of simple structure, small cable diameter, good longitudinal sealing performance and excellent resistances on corrosion, tension, pressure and the like, improved product quality and reliability of underwater optical cables and reduced manufacturing cost of the optical cable. The invention further discloses a manufacturing method of the longitudinal seal underwater optical cable.

The invention relates to an indoor-laying optical fiber and a manufacture method thereof. The optical fiber comprises a naked optical fiber, the periphery of the naked optical fiber is sequentially coated with a buffer layer and a transient layer, and the transient layer is wrapped with an external protection layer. The processing of the optical fiber is carried out on a same assembly from optical fiber pre-manufactured rod drawing, coating and extrusion molding to be formed in one step. The invention has the beneficial effects that: 1. the invention has simple structure, thin diameter, good bending performance, certain drawing-resistant capacity and flame-retardant water-proof performance, low cost and high cost performance; 2. the invention can be directly used for wiring the interior, ships and automobiles, and the wiring is continuous, convenient and room-saving; and 3. the whole optical fiber is formed from drawing in one step, thus enhancing working efficiency and lowering manufacture cost; and the processed optical fiber is good in quality and low in inner stress, can resist the influence of external force on the optical fiber during manufacturing and using, and avoid the damage and influence on the optical fiber caused by re-processing and heating on the optical fiber.

The present invention relates to an optical fiber and an optical cable which can be used for a long term even under environments in which an oil content migrates into them, and the optical fiber has a glass fiber extending along a predetermined axis, and a coating. The coating is composed of a plurality of layers each of which is comprised of an ultraviolet curable resin or a thermosetting resin, and swelling rates of the respective coating layers are set so that they increase from an outer peripheral surface of the glass fiber to an outer peripheral surface of the cable jacket.

The invention relates to the technical field of optical fiber access, in particular to an optical splitter no-jumper-connection distribution box and a wiring method thereof. The optical splitter no-jumper-connection distribution box structurally comprises a box body, wherein a wiring board is arranged on a top plate at the top inside the box body; a box-type optical divider fixing module is arranged on a right side plate in the box body; a right guide rail plate bracket is arranged on a right side plate in the box body; a right slide rail plate is arranged on the right guide rail plate bracket; a baseplate mounting plate is arranged at the lower part in the box body; a left slide rail plate is arranged between the top plate and the baseplate mounting plate; a 12-core fused and matched integrated module is erected between the left guide rail plate and the right guide rail; a wire management ring bracket is arranged on the left side of the left guide rail plate; wire management rings are arranged on the wire management ring bracket; a baseplate is arranged below the baseplate mounting plate inside the box body; and a ground plate is arranged on the baseplate, and is provided with optical cable stripping devices. The optical splitter no-jumper-connection distribution box and the wiring method thereof can realize the maximum capacity of wiring for optical cables; an optical fiber circuit can be distinct and clear, without winding; and an optical network signal route can be randomly exchanged, and the routine maintenance is facilitated.

The invention relates to a marine low-smoke halogen-free low-toxicity frame-retardant fire-resistant soft optical cable and a manufacturing method thereof, and belongs to the technical field of optical communication special optical cable manufacturing. The marine low-smoke halogen-free low-toxicity frame-retardant fire-resistant soft optical cable is a special fire-resistant optical cable for data communication, and is composed of ultra-low-loss low-temperature-resistant tightly-sleeved optical fiber units, a high-modulus aramid fiber and waterproof aramid fiber mixed reinforcing piece, a halogen-free low-smoke flame-retardant polyolefin oxygen-isolation layer inner protective sleeve, a fire-resistant white mica tape wrapping layer, a stainless steel wire woven wire layer and a crosslinked polyolefin outer protective sleeve. The ultra-low-loss low-temperature-resistant tightly-sleeved optical fiber units are twisted, high-modulus aramid fiber and waterproof aramid fiber are adopted for making the high-modulus aramid fiber and waterproof aramid fiber mixed reinforcing piece, the oxygen-isolation layer inner protective sleeve wraps the reinforcing piece in an extruded mode, the fire-resistant white mica tape wrapping layer wraps the oxygen-isolation layer inner protective sleeve, stainless steel wires are woven outside the fire-resistant white mica tape wrapping layer to form the stainless steel wire woven wire layer, and the crosslinked polyolefin outer protective sleeve wraps the fire-resistant white mica tape wrapping layer and the stainless steel wire woven wire layer in an extruded mode.

The invention discloses an optical cable with a new structure and a production method thereof, and belongs to the technical field of optical cables. The optical cable with the new structure comprisesa reinforcement piece positioned in the centre of the optical cable, a plurality of loose sleeves which surround the periphery of the reinforcement piece and are internally embedded with a plurality of optical fibers, and an outer sheath positioned on the outer layer of the optical cable, and is characterized in that the gap between the plurality of the loose sleeves and the outer sheath is filledwith a PP thin film; and the loose sleeves and the reinforcement piece are tightly combined together through the PP thin film. In a layering stranding process of the production method for the opticalcable with the new structure, a layer of the PP thin film is extruded through a plastic extruding machine; the PP thin film is compressed to wrap the plurality of the loose sleeves by utilizing a compressing mould and fills the gap between adjacent two loose sleeves; after being cooled, the PP thin film is fixed on the periphery of the loose sleeves to form a cable core; and the optical cable with the new structure disclosed by the invention can effectively prevent the sleeves from deforming so as to keep the optical cable structure stable.

The invention provides a high-sensitivity metal baseband armored vibration sensing optical cable. The vibration sensing optical cable comprises optical cables, metal basebands, metal through holes, and adhesive. The optical fibers are placed in the metal basebands with semi-elliptic slots, and the two metal basebands and the optical fibers are solidified into a whole armored optical cable through opposite adhesion. By designing the metal baseband armored vibration sensing optical cable, a simple-to-process and low-cost way of armored enhanced protection is provided for optical fibers. The service life of the vibration sensing optical cable is prolonged greatly. The sensing optical cable can be welded onto an area to be monitored, and can be kept in a high-sensitivity vibration to-be-received state for a long time. By designing the metal baseband armored vibration sensing optical cable, more vibration disturbance can be converted into deformation of the optical fibers, the vibration sensing sensitivity is improved greatly, and long-distance distributed optical fiber real-time monitoring of ultra-weak vibration signals such as sound wave is realized. The high-sensitivity metal baseband armored vibration sensing optical cable can be applied to the field of distributed optical fiber vibration sensing applications.

The invention relates to an optical fiber ribbon coating paste used in a band shape optical cable. The paste is mainly composed of a base oil, an oil separation inhibitor, a pour-point depressant, an anti-oxidant, a tackifying lubricant, an organic densifier and a thixotropic agent. The invention also provides a preparation method of the paste. The optical fiber ribbon coating paste is mainly characterized by good colloid stability, oxidation stability, hear resistance and weatherability, free oil separation system, low acid value, large penetration degree, strong clunging, good permeability and low viscosity. The paste can help the optical fiber ribbon of the band shape optical cable always stay at a most stress-free state in the loose cannula and the cable core of the cable.

The invention provides a miniature optical cable, a method for preparing the same and an outer sheath material for the miniature optical cable. The miniature optical cable comprises a cable core. The cable core comprises a central reinforcement steel wire and a plurality of bundle tubes around reinforcement components, the central reinforcement steel wire and the bundle tubes are stranded to form the cable core, and a plurality of optical fibers are arranged in each bundle tube; a stainless steel band is lapped on the outside of the cable core, and a rat-proof and flame-retardant outer sheath is extruded on an outermost layer of the cable core; a stainless steel band layer is of a double-layer lapped structure, and heat-insulation films are coated on the surface of the stainless steel band layer; a plurality of auxiliary reinforcement steel wires are inserted into the rat-proof and flame-retardant outer sheath. The miniature optical cable, the method and the outer sheath material have the advantages that the diameter of the miniature optical cable is reduced on the premise that the structural strength and the tensile properties are guaranteed, the method is simple and convenient, the outer sheath for the miniature optical cable is abrasion-resistant, ultralow-smoke, halogen-free and rat-repellent, and the like.

The invention provides a para-aramid fiber fault connection component and a connection method thereof, and relates to the technical field of para-aramid fiber fault connection. In the invention, the para-aramid fiber fault connection component comprises a hose (201) clinging to a para-aramid fiber fault, a first fastening ring (202) and a second fastening ring (203) which are used for hooping a connection part, and a tubular coating layer (204) arranged outside the hose (201); a first outer area (205) and a second outer area (211) which are used for nesting aramid fibers at the fault are arranged at the two ends of the hollow hose (201) respectively, and the fiber direction of the connection aramid fibers (3) arranged in the middle body (208) is consistent with the axial direction of the hose (201). Compared with the prior art, the hose (201) does not damage aramid fibers, is made of an elastic material, is easy to deform, and can be pre-tightened and pressed; the hose is stacked and tightly clamped with the middle connection aramid fibers at the fracture ends of the two sections of broken aramid fibers in a staggered manner to keep the strength of the broken part after connection;and moreover, the structure is simple, and the operation is easy.

An organizer assembly includes a primary basket extending along a longitudinal axis between a first open end and a second closed end, the primary basket defining an interior. The organizer assembly further includes a bracket assembly extending along a transverse axis at the first open end of the basket, the bracket assembly including a plurality of hinge assemblies. The organizer assembly further includes a plurality of organizer trays, each of the plurality of organizer trays rotatably connectable to the bracket assembly at one of the plurality of hinge assemblies. Each of the plurality of organizer trays is rotatable between a first position wherein the organizer tray is aligned along the longitudinal axis and a second position wherein the organizer tray is aligned along the transverse axis.

Present invention discloses a method of producing a local illumination patch cord and the corresponding patch cord, based on the technology of a multi-fiber optic cable, from the entrance of supplies till the final product—the local illumination patch cord. Among various available cables, none of those on which tests were carried out met the following final product requirements: flexibility, light efficiency, and decrease of factors affecting its resistance, namely the heat. In opposition to the current accessories available in the market, present invention decentralizes the thermal filter from the cable to the coupling, enabling heat dissipation before entering the illumination cable. Regarding the luminous efficiency, present invention defines a technique with a more effective manner of aggregating the multi-fibers of the cable, with significant savings in production times, and raises polishing quality to the highest level of light transmission.

The invention relates to a plug-in type fusion and distribution separated optical fiber distribution module and a distribution frame, which are used for fusion and storage of separated jumpers, and comprise a distribution box provided with a distribution part; the welding and distribution separation type distribution board and the drawing are arranged in the distribution part, the two surfaces of the welding and distribution separation type distribution board are respectively provided with an optical fiber welding disc and a tail fiber storage disc, the welding and distribution separation type distribution board is provided with a through hole for a tail fiber to pass through, the end part of the welding and distribution separation type distribution board is provided with an SC adapter connected with a connector, and the connector is connected with the SC adapter after the connector is connected with the SC adapter. The tail fiber passes through the through hole and is connected with the communication optical cable, and the redundant jumper tail fiber is wound in the tail fiber storage disc. According to the invention, the tail fiber welding and storage of the jumper are separated, the redundant tail fiber of the jumper is stored and managed, the welding process is ensured not to be influenced by the redundant tail fiber, the use habit of the welding and distribution separation operation is met, the drawing type distribution module is set, the modular operation habit of maintenance personnel is facilitated, and the overall wiring of the distribution frame is clear.

The invention belongs to the technical field of communication optical cables, and discloses a layer-stranded optical cable applicable to different space environments. The optical cable is provided with a communication component and a reinforcing element, and is characterized in that the optical cable also comprises n unit components; each unit component consists of a tubular body, a connecting body and a rotating body, wherein one end of each connecting body is connected with the corresponding tubular body, and the other end of each connecting body is connected with the corresponding rotating body; a tube body hole is formed in the tubular body, rotating holes are formed in the rotating bodies, gaps are formed between the adjacent rotating bodies, gaps are formed between the adjacent connecting bodies, the connecting bodies and the rotating bodies appear in pairs, the distance between the adjacent rotating bodies is (L1), the width of the rotating bodies is (L2), the communication component is located in the pipe body hole, the reinforcing element penetrates through all the rotating holes, and the rotating bodies are distributed along the reinforcing element; the unit components can rotate around the reinforcing elements; L1 is not less than (n-1) times of L2, and n is a positive integer and is greater than 1. The invention has the main beneficial effects of simple structure, easiness in manufacturing, wide application range and low requirement on space environment.

The invention discloses an improved optical cable clamp, which comprises a U-shaped hanging ring, wherein a right-angular ring is hung under the U-shaped hanging ring; a hanging head is hung under theright-angular ring. The improved optical cable clamp is characterized in that a discharging component is arranged on the right-angular ring in a sleeving way; the discharging component comprises a metal discharging layer; an insulation layer is arranged between the metal discharging layer and the hanging head; the upper surface of the meal discharging layer is provided with a plurality of spine bulges. Through the metal discharging layer arranged on the discharging component, grounding leakage current on an ADSS (all-dielectric self-supporting optic fiber cable) can be partially released; particularly through the spine bulges arranged on the metal discharging layer, the discharging effect can be effectively achieved, so that the intensity of the grounding leakage current can be reduced; the formation of continuous electric arc on the ADSS can be prevented.

The invention discloses a manufacturing process of an optical cable. The manufacturing process comprises the following steps: 1) winding a water-blocking tape on the outer side of a cable core at intervals; (2) enabling the cable core to enter a paste coating device to be coated with ointment; (3) enabling the cable core to enter an extrusion molding device, and processing an outer sheath on the outer side of the cable core; and 4) cooling and drying the outer sheath, and then spraying an identification mark at the corresponding position of the outer sheath and the dry-type waterproof jacket. According to the application, the water-blocking tapes are arranged at intervals before the cable core is coated with the ointment, so that after the cable core is coated with the ointment, the sections where the water-blocking tapes are located basically have no ointment. During actual construction, the optical cable is cut off at the identification mark, at the moment, no ointment flows out of the section of the optical cable between the cable core and the outer sheath, and the optical cable is more convenient to construct.

A Hi-Fi audio signal optical fiber cable has an optical fiber bundle provided coaxially inside a snake tube. The optical fiber bundle has multiple optical fibers. Both ends of the optical fiber bundle protrude from the snake tube and are installed with a connector respectively. An air gap is formed between the optical fiber bundle and the snake tube so that ordinary air fills in the air gap. When a signal source inputs an optical signal via one connector, the optical signal is transmitted within each optical fiber by total reflection and goes out from the other connector. Since the refractive indices of the optical fiber bundle and the air have a significant difference, the total reflection is better, thereby achieving high fidelity. Each optical fiber has a smaller numerical aperture, and the optical path of the optical signal is shorter and signal attenuation in the material is avoided.

The invention provides an optical fiber take-up and pay-off device. The optical fiber take-up and pay-off device comprises a base, a rotating roller, a reciprocating lead screw, a reciprocating moving part, two clamping rollers and a synchronous driving assembly. The base is provided with a guide cavity; the rotating roller and the reciprocating lead screw are rotationally arranged in the guide cavity channel; the reciprocating moving part is in threaded connection with the reciprocating lead screw and is provided with a guide hole; the two clamping rollers are arranged in front of the reciprocating moving part in parallel, and a reverse driving structure is arranged between the two clamping rollers; the synchronous driving assembly is connected with the rotating roller, the reciprocating lead screw and one clamping roller. During use, the synchronous driving assembly drives the rotating roller, the reciprocating lead screw and the corresponding clamping roller to rotate; the rotating roller rotates to realize optical fiber take-up and pay-off; the reciprocating lead screw drives the reciprocating driving piece to move to adjust the take-up and pay-off track of the optical fiber; and under the action of the reverse driving structure, the two clamping rollers rotate reversely to clamp the optical fiber, so that the optical fiber is straightly wound and unwound. According to the optical fiber take-up and pay-off device, the more stable optical fiber take-up and pay-off process can be achieved, and the optical fiber take-up and pay-off efficiency is ensured.

The invention discloses a combined residual cable coiling storage device suitable for an ADSS (All Dielectric Self-Supporting) optical fiber cable. The device comprises a horizontal bracket, a vertical bracket, a residual cable fixing element and a joint box fixing frame, wherein the horizontal bracket is used for providing support in a horizontal direction; the vertical bracket is used for providing support in a vertical direction; the residual cable fixing element is used for fixing the residual cable; the joint box fixing frame is used for fixing the joint box; the end parts of the horizontal bracket and the vertical bracket are connected with the residual cable fixing element; and the joint box fixing frame is connected to the vertical bracket and comprises a first fixed component anda second fixed component, wherein the first fixed component is used for connecting the vertical bracket with the bottom of the joint box, and the second fixing component is used for connecting the vertical bracket with the top of the joint box. The optical fiber cable fixing of the scheme is suitable for the ADSS optical fiber cable with an own load bearing structure. In addition, the device is convenient in assembling, is integrally subjected to lightweight design and is convenient for constructing a suspension point which is planned in advance.