25 results about "Optical fiber cable" patented technology

The invention discloses an optical fiber distribution combination comprising an optical fiber distribution module and an optical fiber plug, wherein the optical fiber distribution module comprises a distribution module structure body, an adapter fixed on the distribution module structure body and a signal port plug which is fixedly arranged on the distribution structure body and used for receivingan identification signal; the optical fiber plug comprises a connecting head which is used for being matched with an optical fiber interface of the adapter and transmitting an optical signal and an identification plug which is arranged at one side of the connecting head convexly, wherein the identification plug is combined with the signal port plug when the connecting head is inserted in the adapter. The invention can achieve the intelligent optical fiber distribution function based on ID and ensure the reliable transmission of a signal of a chip. In addition, the complexity of an electrically connected structure of the adapter and the optical fiber plug is lowered, the structures of the adapter and the optical fiber plug are simplified, the manufacture cost of the whole optical fiber distribution combination is lowered, and the convenient maintenance and debugging is achieved.

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.

An optical fiber holder includes a holder main body and cord receiving groove. The holder main body has a fiber receiving groove and a first cord receiving groove. The fiber receiving groove receives and positions a coated optical fiber of an optical fiber cord with a cord jacket removed at the tip of the optical fiber cord. The cord receiving groove receives the cord jacket. A cord holding cover and a fiber pressing cover 13 are attached to the holder main body 6 for movement between respective open closed positions. The cord holder cover includes a second cord receiving groove that cooperates with the first cord receiving groove to form an insertion through hole having a circular cross-section that allows for insertion of the optical fiber. The fiber pressing cover presses the coated optical fiber against the holder main body with the coated optical fiber in the fiber receiving groove.

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 discloses an optical fiber laying and imaging device and method for sensing a phreatic surface of a dam. The device comprises at least five layers of optical fibers laid layer by layer along the height direction of the dam, the optical fibers laid layer by layer along the height direction of the dam are alternately laid according to the shape as shown in the description, one ends ofthe optical fibers are connected with a pulse transmitting device, and the other ends of the optical fibers are connected to a computer through an optical fiber connector. The device obtains points ona phreatic line of different sections by means of layered laying of the distributed optical fibers, interpolating point distribution is conducted on center of gravity in the area, iterative computation is conducted to form the phreatic line, the points on the different sections are connected to generate the complete phreatic surface, and the device has a great significance in achieving the wholeregion real-time monitoring of seepage behavior of the dam.

The invention discloses a novel optical cable sensing system for pipeline leakage detection and belongs to the technical field of monitoring. The novel optical cable sensing system is mainly used forautomatic real-time detection on leakage of liquid or gas in a pipeline. A sensing ring surrounds the periphery of the pipeline and is connected with an elastic plate below the pipeline through a connecting belt; and a sensing optical cable is paved on the elastic plate. An impact vibration signal generated when liquid or gas leaks is detected by the sensing ring and transmitted to the sensing optical cable on the elastic plate; the vibration signal modulates a laser signal in the sensing optical cable, the laser signal is sent back to a signal analysis and recognition computer system in a monitoring room through the optical cable, the specific position and the signal type of leakage are worked out through the demodulation algorithm, a monitoring staff is helped to precisely judge the failure in real time and carry out corresponding timely emergency maintenance. The novel optical cable sensing system can realize full-automatic real-time detection on leakage of the long-distance pipeline, can effectively replace traditional manual inspection tour and is simple and convenient in operation, high in economic benefit and wide in application prospect.

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 discloses a remote control system for a tyre gantry crane. The remote control system is characterized by comprising an optical fiber plugging cart, an optical fiber plug, shift lever mechanisms arranged on the optical fiber plugging cart and optical cable carts, wherein the shift lever mechanisms can be connected and positioned with the corresponding optical cable carts; the optical fiber plug comprises an optical fiber plug box component; the optical fiber plug box component comprises passive plug boxes and active plug boxes; the passive plug boxes are connected with a remote control chamber through optical cables; the active plug boxes are in master control connection with the crane; the active plug boxes can be connected or disconnected from the passive plug boxes, so that an optical signal is conducted or broken off; the passive plug boxes are arranged on the corresponding optical cable carts; the active plug boxes are arranged on the optical fiber plugging cart; and the active plug boxes and the shift lever mechanisms can synchronously move on the optical fiber plugging cart.

The invention discloses a dual-polarization-state dual-binary optical access system fusing an optical fiber link and a free space optical communication channel. According to the system, a polarizationmultiplexing technology and a dual-binary modulation mode are adopted to generate an optical dual-polarization state dual-binary (DP-DB) signal at a transmitting end, and the signal is transmitted through a 50km single-mode optical fiber (SMF-28) and a 100m free space wireless optical communication (FSO) channel at the rate of 10Gb/s. Compared with a conventional optical access system scheme, thetest results prove that the DP-DB optical fiber access system provided by the invention has the access advantages of an optical fiber link and a free space downlink at the same time, can provide theaccess with high bandwidth efficiency and support the direct detection of the optical signals after polarization demultiplexing, and can be applied to the last kilometer area which is not beneficial to optical fiber transmission.

The invention discloses a near-infrared photoelectrode cap with an optical fiber tip, comprising a test cap, the test cap is provided with a plurality of installation holes, and the installation holes are provided with a near-infrared photoelectrode; the near-infrared photoelectrode It is electrically connected to the instrument through a wire; a light diffusion sheet is provided on the side of the near-infrared photoelectrode away from the scalp, and the light diffusion sheet is electrically connected to the instrument through an optical fiber. The invention can realize the function of real-time monitoring whether the test cap is in poor contact and whether the impedance value reaches the standard by setting the optical fiber and the light diffusing sheet, and can safely and effectively avoid the phenomenon that the near-infrared photoelectrode is too strong to damage the user's head or have no therapeutic effect, and greatly improves the The safety and efficacy of using the test cap for diagnosis and treatment.

The invention discloses a novel optical fiber composite low-voltage cable. The cable comprises a cable core, wherein the cable core is formed by concentrically twisting multiple low-voltage power cable insulated cores and an optical cable; a covering tape layer, an armor layer and an outer sheath sequentially and concentrically wind around the cable core. Power cables and the communication optical cable are integrated in one cable, the purpose that the entering problem of cables is solved once through one-time construction and one passage only is achieved technically, repeated construction of multiple lines such as electric wires, network cables, telephone wires, cable television cables and the like in the past can be replaced, and cable resources and pipeline resources are greatly saved. The cable integrates functions of optical fiber communication and power transmission, has the characteristics of high-reliability data transmission, low price, convenience in connection and the like, has the advantages of small outer diameter, low weight and small occupied space, and is important to future data transmission for home intelligentization, office automation, digital substations and industrial control networking.

The invention discloses a novel optical fiber adapter tube which comprises a main body, wherein the upper part of the main body is connected with a fixed disc, a gasket is arranged above the fixed disc, a rubber ring is arranged above the gasket, the main body is connected with an adapter, a plurality of bumps are arranged on the adapter, a bearing tube is connected with a metal tail end tube, andan optical fiber inner tube hole is formed in the main body. The novel optical fiber adapter tube is simple in structure, the two optical fibers can be permanently or separably connected together, aconnection part for protecting the parts is arranged, and vibration borne by the adapter can be effectively reduced through the rubber ring and the gasket.

The invention discloses a novel high-birefringence polarization maintaining optical fiber capable of maintaining random polarization and a manufacturing method thereof. The optical fiber is provided with a fast axis and a slow axis, as well as a fast axis-slow axis 0-degree butted transitional surface, wherein the optical fiber is divided into optical fiber sections by the transitional surface; the length of each optical fiber section is less than the reciprocal value of the gradient of a spatial temperature field in which the optical fiber section is positioned along the light propagation direction of the optical fiber and is simultaneously within the length range of the reciprocal value of temperature gradient of the optical fiber; and difference between the length sum of the optical fibers with odd serial numbers and the length sum of the optical fibers with even serial numbers ensures that the optical path difference between two axial components of light is less than the coherence length. The optical fiber can be obtained by changing the position of a stress application region in an optical fiber drawing process, and can also be manufactured by bisecting an existing high-birefringence polarization maintaining optical fiber and then performing fusion splicing on the optical fiber sections by adopting fast axis-slow axis butt joint. The polarization maintaining optical fiber disclosed by the invention can be used for maintaining the polarization in a random polarization state, and can realize a communication channel for Robus polarization maintaining by virtue of auxiliary equipment.

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.

The invention provides an EDID processing method, a micro-control unit and an optical fiber sending box. The method comprises the steps of enabling an MCU to detect the potential of a first port of adetection and discrimination circuit; if the potential of the first port is a low potential, determining that the signal source equipment is connected to the DVI connector, controlling the switching circuit, communicating the signal source equipment with the memory, and reading the EDID; if the potential of the first port is still high after the preset time, pausing to detect the potential of thefirst port; detecting a second port potential of the detection discrimination circuit; and if the potential of the second port is the low potential, determining that the display device is connected tothe DVI connector, reading the EDID of the display device by the MCU, and storing the EDID in the memory. According to the scheme, the MCU detects the potentials of the first port and the second port, determines that the signal source device or the display device is accessed to the optical fiber sending box, and performs EDID processing. The EDID does not need to be learned manually by using a key, so that the stability of the optical fiber sending box and the success rate of learning the EDID are improved.

The invention provides an optical fiber coupling connector, which comprises a shell and a coupling part, wherein the shell is provided with an accommodating groove for accommodating the coupling part; the coupling part is provided with a positioning column; the accommodating groove is provided with a positioning hole in which the positioning column is mutually inserted; an elastic element is accommodated at the bottom of the positioning hole; the coupling part is elastically accommodated in the accommodating groove through the elastic element; a slide block which is fixedly connected with the positioning column is additionally arranged between the positioning column and the elastic element; and the slide block can only slide in the axial direction of the positioning hole. Compared with the prior art, the optical fiber coupling connector has the advantages that the movement direction of the coupling part in the accommodating groove is controlled through controlling the slide trajectory of the slide block in the positioning hole, so the phenomenon that the coupling part is inclined relative to the shell, which is caused by uneven force application of a user, is guaranteed not to occur in the coupling connection process of the optical fiber coupling connector.