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FAQ

  • Q How does PLC splitter work

    Passive Optical Network (PON) splitters play an important role in Fiber to the Home (FTTH) networks by allowing a single PON network interface to be shared among many subscribers. Splitters contain no electronics and use no power. They are the network elements that put the passive in Passive Optical Network and are available in a variety of split ratios, including 1:8, 1:16, and 1:32.

    PLC Splitters are installed in each optical network between the PON Optical Line Terminal (OLT) and the Optical Network Terminals (ONTs) that the OLT serves. Networks implementing BPON, GPON, EPON, 10G EPON, and 10G GPON technologies all use these simple optical splitters. In place of an optical splitter, a WDM PONnetwork will use an Arrayed WaveGuide (AWG).

  • Q What is CPRI

    CPRI defines the publicly available specification for the key internal interface of radio base stations between the Radio Equipment Control (REC or base station) and the Radio Equipment (RE, or radio head). The companies cooperating to define the CPRI specification now include Ericsson, Huawei, NEC, Nokia Siemens Networks and Alcatel-Lucent. The CPRI specification has gone through several revisions, and today is at version 6.0.

    The idea behind CPRI was to create an open standard for interfacing base stations with radio heads, but in reality, CPRI is not common as it is not truly an open standard. Instead, similar to what happened with the Integrated Services Digital Network (ISDN) standard for PBXs, each base station manufacturer developed its own flavor of CPRI that works only when interfacing its own base stations with its own radio heads. Since most major base station manufacturers don’t make DAS equipment, DAS systems supplied by third party OEMs until now haven’t been able to interface the DAS head end equipment directly with base stations through CPRI.
  • Q Fiber optic adapter

    Bare fiber adapter is used as the medium to temporarily link the bare optical fiber to fiber optic equipment.Available with FC, SC, ST. LC, MU, SMA connectors with round or square type press button

    An adaptor is a device used to connect the same or different type connectors, so that a connection may be made between them.
  • Q What is FTTX

    is a generic term for any broadband network architecture using optical fiber to provide all or part of the local loop used for last mile telecommunications. As fiber optic cables are able to carry much more data than copper cables, especially over long distances, copper telephone networks built in the 20th century are being replaced by fiber.

    FTTX is a generalization for several configurations of fibre deployment, arranged into two groups: FTTP/FTTH/FTTB (Fiber laid all the way to the premises/home/building) and FTTC/N (fiber laid to the cabinet/node, with copper wires completing the connection).

  • Q What is fiber optic cable

    An optical fiber cable is a cable containing one or more optical fibers that are used to carry light. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable will be deployed. Different types of cable are used for different applications, for example long distance telecommunication, or providing a high-speed data connection between different parts of a building.
  • Q EDFA

    EDFA is the abbreviation of erbium-doped fiber amplifier. It is a kind of laser amplifier and it is the most deployed fiber amplifier as its amplification window coincides with the third transmission window of silica-based optical fiber. EDFAs have two commonly-used pumping bands – 980 nm and 1480 nm. The 980 nm band has a higher absorption cross-section and is generally used where low-noise performance is required. The absorption band is relatively narrow and so wavelength stabilized laser sources are typically needed. The 1480 nm band has a lower, but broader, absorption cross-section and is generally used for higher power amplifiers. A combination of 980 nm and 1480 nm pumping is generally utilized in amplifiers.
  • Q what is FTTA

    The new generation of high-performance fiber-optic cables for high-speed data transfer from Rosenberger secures your network connectivity today and in the future.

    The connection between the base station and remote radio unit is the key to the quality of the data transmission to the end user.
    Our extensive experience in the fiber-optic technology field, innovative product development and our long-term co-operation with the leading OEMs and network operators in the telecommunication sector enables us to develop the next generation of universal, FTTA cabling systems.   
  • Q How to Deploy Ribbon Optical Cable in the Data Center?

    Among the various fiber counts available with ribbon optical cable, the 12-fiber ribbons are the most commonly and widely used ones. 12-fiber ribbon optical cable can be easily terminated with both simplex and duplex connectors like LC and SC connectors, or with the MTP/MPO connectors. MTP/MPO connector is a high-density 12-fiber push/pull optical connector, which is used to minimize errors, reduce congestion in patch panels and speed network cabling process. The MTP/MPO connector is commonly pre-terminated, either in pigtail form that spliced onto a 12-fiber ribbon, or as an MTP/MPO connector backbone cabling which is terminated on each end.

    MTP-MPO-connector

  • Q Ribbon Optical Cable Unraveled

     

    Ribbon optical cable offers an optimum alternative for campus, building and data center deployments where higher fiber counts (more than 24 fibers) are required. The fiber counts of it are available with 2-, 4- and 8-ribbon, while 12-ribbon is the most popular in newly designed networks. 24-ribbon is becoming popular in the U.S., when it is terminated or spliced it is treated as 2 x 12 by splitting the 24.

     

  • Q DWDM Technology

    DWDM is a core technology in an optical transport network. The essential components of DWDM can be classified by their place in the system. On the transmit side, there are lasers with precise, and stable wavelengths. On the link, there is optical fiber that exhibits low loss and transmission performance in the relevant wavelength spectra, in addition to flat-gain optical amplifiers to boost the signal on longer spans. On the receive side, there are photodetectors and demultiplexers using thin film filters or diffractive elements. Besides these components, optical add/drop multiplexers and optical cross-connect components may be used.

    The main job of optical fibers is to guide lightwaves with a minimum of attenuation (loss of signal). Multimode fiber and single-mode fiber are the general two categories of optical fiber in use today. Single-mode fiber has a much smaller core that allows only one mode of light at a time through the core. As a result, the fidelity of the signal is better retained over longer distances, and modal dispersion is greatly reduced. These factors attribute to a higher bandwidth capacity than multimode fibers are capable of. For its large information-carrying capacity and low intrinsic loss, single-mode fibers are preferred for longer distance and higher bandwidth applications, including DWDM.

  • Q Payment

    For large orders, T/T , L/C, and E-credit lines are all offered.

    For small orders, credit-cards are accepted.

  • Q OEM and customs

    Kewei fiber has built its reputation as a leading supplier of high integrity optical communication products assemblies by sourcing only the highest quality products as well as being committed to our customers' needs.

    Customized solutions for all needs and specifications are available in Fiberstore, and about 80% of products on our website can be customized. We can work with your preexisting designs as an outsourced manufacturing partner or assist you in rapidly achieving tailored answers for demanding optical fiber communication products. Let's start your Custom Project with Fiberstore.

    Kewei fiber provides optical and electronic engineering services. We welcome any inquiry for customized optical and electronic solutions for optical communication industry. Our primary corporate capabilities include software engineering, systems engineering, network engineering, systems support, program management, and information assurance engineering and analysis. We have built strong industrial relationships based on our ability to provide high quality engineering services, and our striving to be a fair and responsible partner.

  • Q Quality control

    Kewei fiber focus on “quality”, which highlights the pertinent best practices and benefits of managing quality as an integrated part of business to build a culture of collaboration and innovation. We purchased Cisco, Juniper, Brocade and other major brand devices to test the transceivers' quality.Each transceiver is individually tested and walks through the testing challenges. We set ourselves apart by investing in highly trained technical staff and state-of-the-art testing facilities to ensure that our customers receive superior quality transceivers.Our quality control procedures are designed to ensure virtually zero chance of failure in your network.
    We provides a complete set of instruments to test optical transceivers, such as the latest version equipments for Cisco, Juniper , Brocade and other major brands,the manufacturing serial BERTs, the digital communication analyzers and the light-wave measurement system with a large selection of modules for monitoring, switching and attenuating the optical signals.Another very attractive products are the multi-port power meters.All needed is to add a DUT-board, some cabling and a computer.Our quality control procedures are unparalleled in the industry.
    Optical transmitter eye diagram,transmitter average output power and the optical receiver sensitivity are key parameters to be measured and documented for all optical transceivers. 
  • Q Fiber optic splicer machine

    Itis a device that uses an electric arc to melt two optical fibers together at their end faces, to form a single long fiber. The resulting joint, or fusion splice, permanently joins the two glass fibers end to end, so that optical light signals can pass from one fiber into the other with very little loss.
     
    Before optical fibers can be successfully fusion-spliced, they need to be carefully stripped of their outer jackets and polymer coating, thoroughly cleaned, and then precisely cleaved to form smooth, perpendicular end faces. Once all of this has been completed, each fiber is placed into a holder in the splicer’s enclosure.
  • Q Fiber To The Home Passive Optical Network Architectures

    New network architectures have been developed to reduce the cost of installing high bandwidth services to the home, often lumped into the acronym FTTx for "fiber to the x". Fiber to the home (FTTH) is a technology wherein a single optic fiber runs from the central office of a telecom service provider to the customer's residence. The technology is also known at times as FTTx wherein the meaning is broader and covers offices, apartment buidings,communities, and various other configurations.
     
    A PON system allows sharing ecpensive components for FTTH (Fiber To The Home), The technology has no active components in the field and this is the reason it is called PON- passive optic network. The electronics are restricted ti the central office or customer premises. A passive splitter that takes one input and splits it to broadcast to many users cuts the cost of the links susbstantially by sharing. for example,one expensive laser with up to 32 homes. PON splitters are bi-directional, that is signals can be sent downstream from the central office, broadcast to all users, and signals from the users can be sent upstream and combined into one fiber to communicate with the central office.
  • Q Wire Loom - a Convoluted Tubings Product

    In the task of fiber cable managements, you may think it easy and just manage some fiber patch cables or install a grommet. But you have to know that the fiber cables can face the danger from intense heat or cold, external impact or ribbing animals and other uncertainty factors. This time you may need wire looms.

    INTRODUCTION OF WIRE LOOM

    Wire loom is also called corrugated tubing, wire conduit, split loom, convoluted loom, ribbed tubing, and flexible tubing. Wire looms are perfect for organizing cables and managing cords into color-coded bundles that will help keep your electronic equipments in order and prevents equipment failure or fire hazards, they are used in wide-range applications such as electrical wiring in trucks, cars, boats, as well as for use in home entertainment centers, video games, and home and office PC’s.

     

  • Q Fiber Adapter Panels

    Fiber Adapter Panels also called Fiber Adapter plates. It is used for patching fiber cable to the termination enclosure like fiber wall cabinets, rack mount fiber cabinets or rack mount fiber shelf. All fiber adapter panels snap quickly into the front of fiber optic patch panels and enclosures for easy network deployment or moves, adds, and changes.

    We can know from the connection types, Fiber Adapter Panels can be regarded as LC, SC, ST, FC, MT-RJ, E-2000, MPO Fiber Adapter Panels and so on. From the applications of Fiber Adapter Panels, they are also can be design for unload and blanks patch panels. Certainly, singlemode and multimode, or simplex and duplex types you also can customize. Even more, Efoncable can provide can customize compatible with other brand of adapter panels which you know.

  • Q WHAT IS FIBER OPTIC SPLICE CLOSURE?

    Fiber optic closure is a device used to offer spaces to fuse optical fiber as well as to provide protections to the fused fiber joint point and the fiber optic cables. It protects fiber optic splice while providing fast and easy no cost reentry. Inside the closure there are fiber splice trays. Optical fibers are fused and put inside the fiber splice tray for protection. Then the closure itself provides further protection.
    The fiber optic splice closure is installed on wires, in manholes, in ducts, and mounted on poles. It provides reliable sealing performance and fiber splices are enclosed in a ribbed polypropylene body that has high mechanical and environmental specifications.
    There are various kinds of fiber splice closures suit for different applications. They are used with aerial fiber optic cables, duct fiber optic cables and direct buried fiber optic cables. Generally, fiber optic splice closures are used outdoors, some even used underwater. Typical fiber optic splice closures include vertical type and horizontal type.
  • Q WHAT IS OPTICAL DISTRIBUTION FRAME?

    (ODF) is used for wiring connections between fiber optic cables and optical communication devices or among the communication devices. It is an important corollary equipment in optical transmission system, mainly used for fiber optic terminal splicing, fiber optic connector installation, optical path adjusting, excess pigtail storage and fiber optic cable protection, etc..

    ODF has an important role for the safe operation and flexible use of fiber optic communications networks. With the increasingly high degree of network integration, there has been optical digital mixed distribution frames which integrate ODF, DDF, and power distribution unit in one set. They are used for wiring systems in fiber to the cell, fiber to the building, the remote module office and small wireless base station.

    In the past optical communication construction, fiber optic cable is usually several to tens of cores, and the capacity of ODF is generally below one hundred, which shows too small capacity of pigtail storage, inconvenience of connection maneuver, less functional, simple structure and other shortcomings.

     

  • Q what is a patch panel

    A patch panel, patch bay, patch field or jack field is a device or unit featuring a number of jacks, usually of the same or similar type, for the use of connecting and routing circuits for monitoring, interconnecting, and testing circuits in a convenient, flexible manner. Patch panels are commonly used incomputer networkingrecording studiosradio and television.

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Kunshan Kewei Fiber Communcations Equipment Co.,Ltd.

Tel: 0512-57873993
Fax: 0512-57873993
Mobile: +86 18625257159
Whatspp:+86 18625257159

 E-mail: janewang@keweifiber.com
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