2012年8月27日星期一

Types of fiber optic jumper

 
Types of fiber optic jumper
Just not as you think,the fiber optic jumper varies with its connectors.First of all, we must master that fiber optic jumpers is a piece of fiber cable with 2 connectors in each end in general situation and sometimes the fiber optic jumper is also called fiber optic patch cord. The fiber optic jumpers usually used to link the optical transceiver and the terminal box.


Various kind of the fiber optic jumpers:

For the diverse of the fiber optic connector and some other assemblies, especially the transmission medium and transmission mode, the fiber optic jumper can be divided into common silicon base fiber single-mode and multimode optical jumpers, and others such as plastic is transmission medium optical fiber jumper. With the diverse of the fiber transmission, the fiber optic jumpers are divided as the single-mode and the multimode, and SM is short for the single-mode while the MM is short for the multimode , generally the color of the SM is yellow and the MM is orange.

According to the types and structure of the fiber optic joints, fiber optic jumpers can be divided into:
FC: the connector is circle with screw thread and widely used in the fiber optic patch cord and the terminal boxes
SC: the connector is clamping type with square style and widely used in the router and the media converter
ST: the connector is circular with Clamping type  
LC: the connector is similar to the SC but smaller than it
MTRJ: Square and one of the ends is make the send and receive together
And then let’s have a brief talk about PC and APC.PC polishing is a flat surface of the ceramic core ,while the APC is with an 8 angle and Micro spherical polishing.

In a word, the diverse of the constitution parts makes the types of the fiber optic jumpers more various. So the fiber optic jumpers can be divided into :
FC/APC, ST/APC, SC/APC, LC/PC,
FC/PC, ST/PC, SC/PC, LC/PC
MTRJ, MTRJ-FC, MTRJ-LC, MTRJ-ST, MTRJ-SC
FC-SC,SC-LC,LC-FC, FC-ST ,ST-SC
As a fiber optic company, we offer all the fiber optic jumpers referred above and some other fiber optic cables and other products. Our fiber optic products can also customized by you fiber optic buyers.


2012年8月23日星期四

Fiber optic jumpers



Fiber Optic Jumper


Fiber optic jumpers

What is fiber optic jumpers?
Fiber optic jumpers refers to a optical fiber directly link the equipment and components in the fiber optic networks, to facilitate the connection of equipment and management. Used to do from device to optical fiber wiring link jump wire. Thick layer of protection, which generally used in optical transceiver and the connection between the terminal box.


The Structure of the fiber optic jumper:

Fiber optic jumpers are similar with the coaxial cable, but there are no mesh shield inside it.The center is light propagation glass core. In the multimode optical fiber, the core diameter is 15 μ m ~ 50 μ m, roughly and quite substantially with the thickness of a human hair. And single-mode fiber core diameter to 8 μ m ~ 10 μ m. Outside the core surrounded by a layer of refractive index than core low glass envelope, in order to make optical fiber to remain in within the core. To the outside is a layer of thin plastic coat to protect the cuff.


The classification of fiber optic jumpers:

According to the transmission medium ,fiber optic jumpers can be divided into common silicon base fiber single-mode and multimode optical jumpers, and others such as plastic as transmission medium optical fiber jumper;
According to the joint structure forms,fiber optic jumpers can be divided into: FC  , SC, ST , LC, MTRJ, MPO , MU, SMA, FDDI and E2000, DIN4, D4 and so on various forms. More common optical fiber jumpers can also be divided into FC - FC, SC, FC - FC - LC, FC - ST, SC - SC, SC, ST, etc.
Single-mode Fiber :
generally the color is yellow,
connector and protective sleeve are blue;
longer transmission distance.
Multimode Fiber:
generally the color is orange, some with gray,
joints and protection are beige or black;
transmission distance is short .










2012年8月20日星期一

What is fiber optic cable and assemblies

     What is fiber optic cable and assemblies

Fiber optic cable (optical fiber cable) is mainly constituted by the optical fiber (fiberglass) as thin as a hair and plastic protective casing and plastic sheath, and metals such as gold, silver, copper and aluminum in the fiber optic cable, usually no recycling value. The fiber optic cable and also the fiber optic jumpers is a certain number of optical fiber in accordance with certain the cable core outsourcing jacket, and some coated outer sheath for optical signal transmission of a communication line. Namely: the cable is formed after a certain process by the optical fiber (optical transmission carrier).Fiber optic jumpers are also an obbligato part in the telecommunication.


An optical fiber (or optical fibre) is a flexible, transparent fiber made of glass (silica) or plastic, slightly thicker than a human hair. It functions as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber.The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics.


As is known to all, we JFOPT supply the fiber optic cable and other assemblies such as fiber optic jumpers, the category varies with its connectors, such as the LC,SC/APC,ST, E2000/APC,MU, VF45,FC, MT-RJ, SC, MPO, Volition,MTP, FC/APC, ST/APC, LC/APC. Anyhow we promise all the buyers the best service and the fiber optic cables and other assemblies and fiber optic jumpers  with the highest Qualities. Fiber optic patch cord and fiber optic jumpers is the essential part of the the desktop computer or device directly connected to the fiber, aiming to facilitate device connectivity and management.

Fiber optic cables and other assemblies and fiber optic jumpers will be the main telecommunication products.





2012年8月5日星期日

Types of fiber optical patch cord

 Types of fiber optical patch cord


Fiber patch cord (also known as fiber optic connectors), is a fiber optic connectors which are access to the optical module , various, and can not interoperate with each other.

      SFP modules, with the LC fiber optic connector, while the GBIC connected SC fiber optic connectors.

      The following are the detailed description of several commonly used fiber optic connectors in network engineering :?FC  fiber optical patch cord: External strengthen the use of metal fastening method for the turnbuckle. Generally used in the ODF side (patch panel?SC  fiber optical patch cord: connector to connect the GBIC optical modules, and its shell is rectangular ,fastening method is the use of plug pin latch type, do not need to rotate. (Routers, switches, the most widely used)?ST fiber optical patch cord: commonly used in fiber optic patch panel, shell round in shape, fastening methods for the turnbuckle. (For 10Base-F connections, the connectors are usually ST type commonly used in fiber optic patch panel?LC fiber optical patch cord: connected to the SFP module connector, it uses the convennient operate modular jack (RJ) latch mechanism . (Commonly used in routers)?MT-RJ  fiber optical patch cord: Both send and receive  ,the square fiber optic connectors, and one dual fiber transceiverST, SC connectors commonly used in general network. ST inserted after rotating a half weeks of a fixed bayonet, the drawback is easily broken; SC connector plug directly,  easy to use, the drawback is easy to fall out; FC connectors general telecommunications network using a nut screwed onto the adapter. advantages of solid, anti-dust

The disadvantage is that the longer installation time. MTRJ type fiber optic jumper by two high-precision plastic molded connectors and fiber optic cable. Outside of the connector is a precision plastic parts, including the tight organization of the push-pull plug card. For indoor applications in the telecommunications and data network systems.

Fiber modules: general are hot-swappable-GBIC fiber-optic interface and more for SC or ST type; SFP,that is , Small package-GBIC fiber optic LC type.
Fiber:1310 Single-mode:
SM:L, wavelength  long distance LH wavelengths 1310, 1550

MM: SM wavelength 850

SX / LH can use SM or MM fiber

Pigtail connector marked, usually,we can  see the FC / PC, SC / PC, etc., its meaning is as follows:

1 "/" the front part shows  connector types of pigtail
"SC"is the standard rectangular connector, engineering plastics, high temperature, not easily oxidized advantages. Transmission equipment sidelight interface generally with SC connector

"LC" connectors and SC connectors are similar in shape, but smaller
"FC" is a metal connector, usually used in the ODF side, pluggable metal joints more often than plastic.

There are varieties signal connector, besides, MTRJ, ST, MU  and so on,2 '/' behind that is the cross-section technology of fiber optic connectors, ie,polishing"PC" is the most widely used in the equipment of telecom operators , the joint cross-section is flat."UPC "attenuation is smaller than the "PC", generally used for devices with special needs, some foreign manufacturers ODF frame internal jump fiber with the FC / UPC, mainly to improve the indicators of the ODF device itself.

In addition, more applications in CATV broadcasting and early "APC" Model Pigtail head with the inclination of the face, and can improve the quality of television signals, mainly for the reason that the TV signal is analog optical modulation, when the connector coupling The surface is perpendicular to the reflected light returns along the original path.

The fiber refractive index profile of uneven will again return to the coupling surface, although the energy is very small but  for the analog signal can not completely eliminate the noise, so the equivalent of a clear signal superimposed on a weak signal with a delay performance is ghosting on the screen. The pigtail headband inclination enable the incident light does not return along the original path. Generally there  exist no problem in digital signal .


Types of the fiber optic cables

Types of the fiber optic cables----a serious problem of the fiber optic cables

In terms of the fiber optic cables, there are thousands of kinds to classify the types of fiber optic cables according to different sorting technique.
To know about the fiber optic cables’ type thoroughly, we have to master what is fiber optic cables at first.
An optical fiber cable is a cable containing one or more optical fibers. 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.

Now I share something more about the fiber optic Cable’s types:
A:
•    OFC: Optical fiber, conductive
•    OFN: Optical fiber, nonconductive
•    OFCG: Optical fiber, conductive, general use
•    OFNG: Optical fiber, nonconductive, general use
•    OFCP: Optical fiber, conductive, plenum
•    OFNP: Optical fiber, nonconductive, plenum
•    OFCR: Optical fiber, conductive, riser
•    OFNR: Optical fiber, nonconductive, riser
•    OPGW: Optical fiber composite overhead ground wire
•    ADSS: All-Dielectric Self-Supporting
B:classify according the Color coding
1.Patch cords----types of fiber optic cables
The buffer or jacket on patchcords is often color-coded to indicate the type of fiber used. The strain relief "boot" that protects the fiber from bending at a connector is color-coded to indicate the type of connection. Connectors with a plastic shell (such as SC connectors) typically use a color-coded shell. Standard color codings for jackets and boots (or connector shells) are shown below:
Buffer/jacket color    Meaning
Yellow    single-mode optical fiber

Orange    multi-mode optical fiber

Aqua    10 gig laser-optimized 50/125 micrometer multi-mode optical fiber
Grey    outdated color code for multi-mode optical fiber

Blue    Sometimes used to designate polarization-maintaining optical fiber

Connector Boot    Meaning    Comment
Blue    Physical Contact (PC), 0°    mostly used for single mode fibers; some manufacturers use this for polarization-maintaining optical fiber.

Green    Angle Polished (APC), 8°   
Black    Physical Contact (PC), 0°   
Grey,    Beige    Physical Contact (PC), 0°    multimode fiber connectors
White    Physical Contact (PC), 0°   
Red        High optical power. Sometimes used to connect external pump lasers or Raman pumps.
Remark: It is also possible that a small part of a connector is additionally colour-coded, e.g. the leaver of an E-2000 connector or a frame of an adapter. This additional colour coding indicates the correct port for a patchcord, if many patchcords are installed at one point.
 2.Multi-fiber cables----types of fiber optic cables
Individual fibers in a multi-fiber cable are often distinguished from one another by color-coded jackets or buffers on each fiber. The identification scheme used by Corning Cable Systems is based on EIA/TIA-598, "Optical Fiber Cable Color Coding." EIA/TIA-598 defines identification schemes for fibers, buffered fibers, fiber units, and groups of fiber units within outside plant and premises optical fiber cables. This standard allows for fiber units to be identified by means of a printed legend. This method can be used for identification of fiber ribbons and fiber subunits. The legend will contain a corresponding printed numerical position number and/or color for use in identification.[13]
EIA598-A Fiber Color Chart[13]

Position    Jacket color
1    Blue
2    Orange
3    Green
4    Brown
5    Slate
6    White
7    Red
8    Black
9    Yellow
10    Violet
11    Rose
12    Aqua
13    Blue with black tracer
14    Orange with black tracer
15    Green with black tracer
16    Brown with black tracer
17    Slate with black tracer
18    White with black tracer
19    Red with black tracer
20    Black with yellow tracer
21    Yellow with black tracer
22    Violet with black tracer
23    Rose with black tracer
24    Aqua with black tracer
    Color coding of Premises Fiber Cable[13]

Fiber Type / Class    Diameter (µm)    Jacket Color
Multimode 1a    50/125    Orange
Multimode 1a    62.5/125    Slate
Multimode 1a    85/125    Blue
Multimode 1a    100/140    Green
Singlemode IVa    All    Yellow
Singlemode        

The type of the fiber optic cables are complex and various. And the following added is the classify of fiber :

Fiber classification from the operating wavelength, the refractive index distribution, transmission mode, raw materials and manufacturing methods
For induction of the various classifications for example as follows.
(1) The operating wavelength: UV optical fiber, considerable fiber, near-infrared fiber-optic, infrared fiber (0.85pm, 1.3pm

1.55pm).
(2) refractive index distribution: step (SI) type, and recent step-type gradient (GI) type, others (such as triangular, W-type

Depressed, etc.).
(3) transfer mode: single-mode fiber (with polarization maintaining fiber, non-polarization maintaining fiber), multimode fiber.
(4) raw materials: quartz glass, multi-component glass, plastic, composite materials (such as plastic cladding, liquid core, etc.)

IR materials. Coating material can be divided into inorganic materials (carbon, etc.), metal materials (copper, nickel, etc.) and plastic

And so on.
(5) manufacturing methods: pre-plastic vapor phase axial deposition (VAD), chemical vapor deposition (CVD), the drawing method

Tube law (Rod intube) and double crucible method.


   

   
   

   
   

   
   


   
   


2012年8月4日星期六

The life of the fiber optic jumpers


The life of the fiber optic jumpers

Fiber optic jumper is the most modern communication industry fiber optic cable line equipment, because of its connection to long distance and insert low loss, good reproducibility not have a lot of return loss, and can support simultaneous multiple devices, also mutual insertperformance is good, no heat, good temperature stability. The fiber-optic jumper cable television and telecommunications networks, computer and fiber-optic network and optical test equipment.

      Transfer due to maintenance needs of fiber optic patch cords and normal tests, fiber optic connectors are often carried out plug, which leads to the maximum plug life pluggable number of issues. This problem should be based on this premise: fiber optic connectors under normal conditions of use, the swap by the required number of each component without mechanical damage, the additional loss does not exceed the limits (usually the limits specified as 0.2dB). Optical fiber connector plug life is generally determined by the mechanical wear of the components. At present, the fiber optic connector plug life can be achieved is greater than l000, the additional loss of no more than 0.2dB. Slotted ceramic fiber optic connector coupling sleeve, a crack growth of ceramic materials, the static fatigue will cause the sleeve to rupture. According to the information, unfiltered such sleeve 20-year probability of rupture of 10-4. If the screening force of more than 2.6 times the working stress screening test, then in 20 years will not rupture.


2012年8月2日星期四

fiber optic network

Fiber optic network
 
We can divide this word into 2 parts, fiber optic and network. When it terms to fiber optic ,we can take this description that fiber optics are thin filaments of glass that transmit light and carry information from one point to another at the speed of light.While Network, just as its name implies, the network is the physical link connected to the isolated workstation or host together form a data link to achieve the purpose of resource sharing and communication.
 
Therefore,  In the telcos, singlemode fiber is used to connect long distance switches, central offices and SLCs (subscriber loop carriers, small switches in pedestals in subdivisions or office parks or in the basement of a larger building). Practically every telco's network is now fiber optics except the connection to the home. Fiber to the home is not yet cost effective - especially since most homes do not want (nor are willing to pay) for the high speed services that would justify fiber optics.
 
Most fiber optic products are generally used in this areas ,such as CATV,LANS and some other social networks. Lots of other networks use fiber. CCTV is often on fiber for it's distance capability. Industrial plants use lots of fiber or distance and noise immunity. Utilities use it for network management, liking its immunity to noise also. The military uses it because it's hard to tap or jam. Airplanes use it for that reason too, but also like the lighter weight of fiber.
 
Fiber is important to us, while some others always ignore this, then why use fiber and whats the importance, lets discuss it . Telcos use fiber to connect all their central offices and long distance switches because it has thousands of times the bandwidth of copper wire and can carry signals hundreds of times further before needing a repeater. The CATV companies use fiber because it give them greater reliability and the opportunity to offer new services, like phone service and Internet connections. Both telcos and CATV operators use fiber for economic reasons, but their cost justification requires adopting new network architectures to take advantage of fiber's strengths.
 
So when it comes to costs, looking at the cabling component costs may not be a good way to analyze total network costs. Consider the total system and you may find fiber looks a lot more attractive.
 
Fiber optic industry is a promising industry, so, as a member of the fiber optic area, I firmly believe that benefits , chances and challenges will be more and wonderful.