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JFOPT is fiber optic cable manufacturer, supplying fiber optic cables, connectors, patch panel, Switch, attenuator, pigtails and fiber optic tools
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- fiber optic

- How to select multimode ferrule
- Flame retardant material of JFOPT Splice Closure
- Can the fiber optical splitter be bi-directional communication?
- Indoor Armored Cable Instructions
- Video demonstrates how to test patch cords for standard compliance

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 About fiber Optic Attenuator Alerter l'administrateur Recommander à un ami Lien de l'article 

Fiber optic attenuator technique data
UPC type return loss 50dB or greater
APC type return loss 60dB or greater
Working wavelength 1310nm or 1550nm

About fiber Optic Attenuator
Sometimes in the fiber optic network, people need to reduce the fiber optic light power level when it is transmitted from one equipment to another; fiber optic attenuator is a device for this function. The unit “dB”, usually from 1dB fiber optic attenuator to 20dB fiber optic attenuators, measures fiber optic attenuation level. This is called a fixed value fiber optic attenuator, each piece of the fiber attenuator the attenuation rate is fixed. There are female to female and female to male type attenuators, the latter is also called a plug type attenuator.

Adustable fiber Optic Attenuator
There are also variable fiber optic attenuator , usually is inline type, with an adjustable unit on the attenuator to change its attenuation level to a certain amount according to its capacity. 

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 28-03-2013 à 07h59

 Fiber optic splitter features and introduction Alerter l'administrateur Recommander à un ami Lien de l'article 

Fiber Optic Splitter Features

Single Mode, multimode, and PM fiber types
Multiple port configurations
Various splitting ratios, 50:50 to 1:99
Tube type or Box type
PC, UPC, and APC fiber optic connectors
Available with FC, SC, ST, LC, and MU terminations

Fiber Optic Splitters Introduction

fiber optic splitter is a device that split the fiber optic light into several parts by a certain ratio. For example, when a beam of fiber optic light transmitted from a 1X4 equal ratio splitter, it will be divided into 4-fiber optic light by equal ratio that is each beam is 25% of the original one. fiber optic splitter is different from WDM. WDM can divide the different wavelength fiber optic light into different channels. fiber optic splitter divide the light power and send it to different channels.

Single window Fiber Optic Splitter and dual window Fiber Optic Splitters

Here the window refers to the working wavelength. Single window fiber optic splitter is with one working wavelength, dual window fiber optic splitter is with two working wavelength. For multimode fiber, the term means that the fiber is optimized for 850 nm and 1310 nm operation. For single-mode fibers, the term means that the fiber is optimized for 1310 nm and 1550 nm operation. For single window fiber optic splitter, its working wavelength usually is one of the above said wavelength.

PLC Fiber Optic Splitter

We supply Planar Lightwave Circuits which are key components used in FTTx networks. We supply the PLC splitters including 1XN to 64 and 2XN to 32 types, they are with a wide range of working wavelength from 1260nm to 1620nm.
Fused Fiber Optic Splitter
We supply single mode fused fiber optic splitters, they are available in optional stainless tube package or standard box package. These fiber splitters are single window and dual window types, with optional various kinds of fiber connectors.

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 28-03-2013 à 08h06

 What Is Fiber Optical Connectors Alerter l'administrateur Recommander à un ami Lien de l'article 

Fiber optic connectors, detachable (active) device connected between the fiber and the fiber, the two fiber end face precision docking up to launch the optical output of light energy to maximize the coupling to the receiving fiber,and because of its involvement in the optical link system impact be minimized, which is the basic requirements for fiber optic connectors. To a certain extent, fiber optic connectors affect the reliability and the performance of optical transmission systems.

Fiber Optic Connector is an important components used in the fiber optic network. It is also the key part used in fiber optic patch cord and fiber optic pigtail. There are many kinds of fiber optic connectors.we supply one piece fiber optic connectors various types, including standard connectors and irregular types, epoxy types. And fiber optic types include: SC fiber optic connector,FC fiber optic connector,ST fiber optic connector,LC fiber optic connector,MU fiber optic connector,SC/APC fiber optic connector,FC/APC fiber optic connector,etc.both Single mode fiber optic connector and multimode fiber optic connector available.

There are Single mode fiber optic connector and Multimode fiber optic connector, Single mode fiber optic connectors can be with PC, or UPC or APC polish, while Multimode fiber optic connectors only with PC or UPC polish. PC or UPC or APC refer to how we polish the ferrule of the fiber optic connectors. Judging from the out looking, Multimode connectors are usually with black boot or beige color, Single mode PC and UPC ones are usually with blue or black color, Single mode APC is with green color. Insertion loss is important technical data of the fiber optic connectors. The smaller the better. APC insertion loss is smaller than UPC, UPC is smaller than PC.

Fiber optical connectors are used to join optical fibers where a connect/disconnect capability is required. There are many types of connectors, the commonly types are LC, SC, FC, ST, MU, E2000.

LC is Lucent Connect or Little Connector or Local Connector. Its ferrule diameter is 1.25mm based on standard of IEC 61754-20. They are often found on small form-factor pluggable transceivers.

SC is Subscriber Connector or square connector or standard connector. Its ferrule diameter is 2.5mm and based on the standard of IEC 61754-4. SC connectors offer excellent packing density and their push-pull design reduces the chance of fiber end face contact damage during connection; frequently found on the previous generation of corporate networking gear, using GBICs.

FC long form is ferrule connector or fiber channel. FC connector has same ferrule diameter as SC but standard (IEC-61754-13). FC connectors need to be mated more carefully than the push-pull types due to the need to align the key, and due to the risk of scratching the fiber end face while inserting the ferrule into the jack. FC connectors have been replaced in many applications by SC and LC connectors.

ST long form is straight tip. The ferrule diameter is 2.5mm and according to standard IEC 61754-2. ST has a key which prevents rotation of the ceramic ferrule, and a bayonet lock similar to a BNC shell.

MU (Miniature unit Coupling) connector is the SC connector is currently the most used based on the developed world's smallest single-core optical fiber connector, developed by NTT.

More source of fiber optic connectors, please visit at http://www.jfiberoptic.com

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 30-10-2013 à 08h36

 Fbt Coupler Fiber Optic Patch Cables And Dwdm Sfp Transceiver Alerter l'administrateur Recommander à un ami Lien de l'article 

Fiber optic splitter is used to split the fiber optic light into several parts at a certain ratio. We use fiber optic splitter to distribute or combine optical signals in many applications, such as FTTH solution, etc. Fiber optic splitters are important passive components used in FTTX networks. Fiber optic splitters can be terminated with different kinds of connectors, the main package could be box type or stainless tube type, one is usually used with 2mm or 3mm outer diameter cable, the other is usually used with 0.9mm outer diameter cables.

Two kinds of fiber splitters are popular used, one is the traditional fused type fiber optic splitter (FBT coupler), which features competitive prices; the other is PLC fiber optic splitter, which is compact size and suit for density applications. Both of them have its advantages to suit for different requirement. FBT Couplers are designed for power splitting and tapping telecommunication equipment, CATV networks, and test equipment. These components are available individually or integrated into modules for fiber protection switching, MUX/DMUX, optical channel monitoring, and add/drop multiplexing applications.

Major differences between PLC splitters and FBT Coupler

1. Technology behind FBT Coupler and PLC splitter.
FBT coupler: Fused Biconical Taper, this is traditional technology to weld several fiber together from side of the fiber.
PLC splitter: Planar Lightwave Circuit is a micro-optical components product, the use of lithography, the semiconductor substrate in the medium or the formation of optical waveguide, to achieve
branch distribution function.

2. Disadvantages and advantages between FBT and PLC.
PLC splitter FBT coupler
SpliSplit Ratio (Max) 1*64 splits 1*4 splits
EveEveness Can split light evenly Eveness is not very precise
SizeSizeSize Compact size Big size for multi splits

Fiber Patch Cable also known as fiber jumper or fiber patch cord, which is a fiber optic cable terminated with fiber optic connectors on both ends. There are two major application areas of Fiber
Patch Cable: computer work station to outlet and fiber optic patch panels or optical cross connect distribution center. Fiber optic patch cables are for indoor applications only. Single-mode fiber
Patch cable is primarily used for applications involving extensive distances. Multimode fiber optic patch cord, however, is the cable of choice for most common local fiber systems as the devices for multimode are far cheaper.

Jfiberoptic.com Dense Wavelength Division Multiplexing (DWDM) Small Form-Factor Pluggable (SFP) is available in all 100 GHz C-band wavelengths on the DWDM ITU grid. They are designed to Multi-Source Agreement (MSA) standards to ensure broad network equipment compatibility. As multirate interfaces they support any protocol from 100 Mbps to 4.25 Gbps. DWDM SFP transceivers provide the high speeds and physical compactness that today's networks require while delivering the deployment flexibility and inventory control that network administrators demand. The 1.25G DWDM SFP transceivers are small form factor pluggable modules for bi-directional serial optical data communications such as 4x/2x/1x Fibre Channel, SDH/SONET, Ethernet applications. We supply 1.25G DWDM SFP modules are hot pluggable and digital diagnostic functions area vailable via an I2C serial bus specified in the SFP MSA SFF-8472. The DWDM SFP transceiver has undergone rigorous qualification and certification testing to provide End-to-End Compatibility using switching equipment from CISCO, BROCADE, JUNIPER, ALCATEL, HP (select models), NORTEL, EMC, QLOGIC and other OEMs. Source: fiber optic cable manufacturer

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 30-10-2013 à 08h39

 The difference between center reinforcement FRP and KFRP Alerter l'administrateur Recommander à un ami Lien de l'article 

FRP, Fiber Reinforced composite plastic, it is English (Fiber Reinforced Polymer). Outdoor cable commonly used FRP reinforcement do center; Now skin cable is more and more widely used, cable center in addition to the use of FRP reinforcement, reinforcement also USES KFRP do center. Two center reinforcement difference is as follows

1. FRP (glass fiber) has the following features:

(1) Light weight, high strength
Relative density between 1.5 ~ 2.0, only 1/4 ~ 1/5 of the carbon steel, but close to the tensile strength, even more than carbon steel, and the intensity of than can be compared with the advanced alloy steel. Therefore, in the aircraft, rocket, the spacecraft, high pressure vessel, and in other applications, the need to reduce the weight of products have excellent results. Some of the tensile, bending and compression strength of epoxy FRP can reach more than 400 mpa.
(2) the corrosion resistant performance is good
FRP is good corrosion material, the atmosphere, water, and general concentration of acid, alkali, salt, and a variety of oils and solvents have a better ability to resist. Has been applied to all aspects of chemical corrosion, is replacing the carbon steel, stainless steel, wood, non-ferrous metal and so on.
(3) good performance
Is a good insulating material, used to make the insulator. Under the high frequency can still protect good dielectric properties. Microwave permeability is good, has been widely used in radome.
(4) good thermal performance
FRP low thermal conductivity, at room temperature is 1.25 ~ 1.67 kJ/(m. h. K), only 1/100 ~ 1/1000, metal is a good thermal insulation material. Under the condition of the instantaneous ultra high temperature, is the ideal thermal protection and ablation resistant material, can protect the spacecraft at above 2000 ℃ under high-speed air flow.
(5) good design
(1) can be flexibly designed, according to their needs, a variety of product structure, to satisfy the use requirement, can make the product has good integrity.
(2) can fully material selection to meet product performance, such as: you can design a decay resistance, resistance to instantaneous high temperature, products of a certain direction with a special high strength, good dielectric properties, and so on.
(6) good manufacturability
(1) according to the shape of the products, technical requirements, use and quantity to the flexibility to choose the molding process.
(2) the process is simple, can be a molding, economic effect is outstanding, especially for complex shape, not easy to shape the number of product less, more prominent its technological superiority.

2. KFRP aramid silk (polyester)
Aramid fiber reinforced fiber strengthen core (KFRP) is a new kind of high performance non-metallic fiber optic cable to strengthen the core, has been widely used in the access network.

L. of lightweight, high strength, aramid fiber reinforced fiber strengthen core is low density, high intensity, its than strength and modulus than steel and glass fiber reinforced fiber strengthening core;

Low expansion: aramid fiber reinforced cable strengthen core in a wide temperature range, the linear expansion coefficient is less than the steel core and glass fiber reinforced fiber strengthened;

Impact resistance, resistance to fracture, aramid fiber reinforced fiber strengthen core not only has high tensile strength (1700 mpa) or higher, and impact resistance, resistance to fracture, even in the case of broken can still keep about 1300 mpa tensile strength;

Flexibility: aramid fiber reinforced cable strengthen core texture is soft, easy to bend, its only about 24 times the diameter of the minimum bending diameter. 5. Make indoor optical cable structure is compact, beautiful, excellent bending resistance, especially suitable for complicated wiring of indoor environment.

Source: fiber optic cable manufacturer

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 30-10-2013 à 08h41

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  Blog créé le 28-03-2013 à 07h28 | Mis à jour le 16-04-2014 à 08h24 | Note : Pas de note