2013年12月26日星期四

Fiber Optic Polishing Paper

Fiber Optic Polishing tools play an important role in fiber optic installation. They are specially used in fiber industry for polishing the end face of fiber optic product. In FiberStore  fiber optic polishing catalogs, you will find our fiber optic polishing machines and other fiber opolishing machine kits including fiber polishing fixture for all types of fiber connectors, fiber optic polishing puck and fiber optic plishing paper. Fiber optic polishing paper is using latest developments of international Ultra-precision coating technology, uniformly dispersed the abrasive powder micron and nanometer (diamond, white fused alumina, silicon carbide, silicon oxide, cerium oxide, iron oxide, etc.) and new polymer material on the high-strength film surface. fiber optic polishing paper The main purpose of fiber optic plishing paper: Optical fiber connectors, couplers, attenuators polishing. Ceramic ferrule, plastic inserts, glass tube hairs polishing. Optical devices, optical crystal polishing. Features: Evenly-sprayed particles on coated surfaces. Submicron powder particles make high polishing accuracy. Positioned lapping & polishing to save abrasive materials. Fine curved surface polishing effects because of flexible substrate. Suitable for polishing with dry, water or oil. Main Specifications of Diamond Polishing Films
UND0.5 UND1 UND2 UND3 UND6 UND9 UND15 UND30 UND45
Size( μ m) 0.5 1 2 3 6 9 15 30 45
Mesh 10000 8000 6000 4000 3000 2000 1200 600 400
Round Specification(mm) Φ 70 / Φ 110 / Φ 127 / Φ 203
Square Specification(mm) 114 × 114 / 152 × 152 / 228 × 228
Banding(mm) 1.6 / 2.0 / 2.5 / 3.2 / 3.8 / 101.6
Fiber optic using Life: While you optimize optical performance of fiber optic connector,  try to extend the service life of the grinding sandpaper/ploshing paper. Each ploshing 14 fiber connectors change to use of different parts of the ploshing paper. Use five parts of one ploshing paper  can ensure that each ploshing paper can grind 70 fiber connectors. Additional, The amount of binder on the tips and the pressure of the polishing can affect the paper life. Our high quality fiber optic polishing products helps to ensure that there will be no defects in your fiber end faces that could degrade the transfer of light. Buy our fiber optic polishers on our worldwide online store with confidence.

2013年11月6日星期三

How about testing mpo/mtp cable


To understand the challenges of MPO cable validation, it’s necessary to understand MPO cables and how they’re tested in the field. An MPO connection is about the size of a fingernail and contains 12 optical fibers, each less than the diameter of a human hair – and each one needs to be tested separately. That traditionally means the use of a fan-out cord to isolate each fiber, followed by tedious manual testing, tracing, and error-prone calculations.
Testing and determining fiber polarity is another challenge. The simple purpose of any polarity scheme is to provide a continuous connection from the link’s transmitter to the link’s receiver. For array connectors, TIA-568-C.0 defines three methods to accomplish this: Methods A, B, and C. Deployment mistakes are common because these methods require a combination of patch cords with different polarity types
So what would a proper MPO test look like? The answer is simple: Test all 12 fibers – the whole cable – simultaneously and comprehensively (including loss, polarity, etc.). That sort of test capability changes the fiber landscape, enabling installers and technicians to efficiently validate and troubleshoot fiber – flying through the process by tackling an entire 12-fiber cable trunk with the push of a button.
The tools to perform this type of test are just emerging on the market, and promise to reduce the time and labor costs up to 95% over individual fiber tests (according to internal research based on the average list of standard competitive products). Characteristics to look for in such a tool include:
An onboard MPO connector to eliminate the complexity and manual calculations associated with a fan-out cord.
A single “Scan All” test function that delivers visual verification via an intuitive user interface for all 12 MPO fibers in a connector.
Built-in polarity verification for end-to-end connectivity of MPO trunk cables.
“Select Individual Fiber” function that enables the user to troubleshoot a single fiber with more precision.
Demand for fast and reliable delivery of critical applications is driving data center technology to evolve at an ever-increasing pace. And that insatiable need for bandwidth ensures that the integrity of the data center has become inextricably linked to the strength of the fiber cabling infrastructure. The growing use of MPO fiber trunks – and the migration from 10-Gbps to 40/100-Gbps connections – means that it’s time to stop the cumbersome verification of individual fibers. After all, it’s a single MPO connection. You should be able to test it as one.
You can buy fiber optic jumpers with mpo/mpo connectors  from FiberStore now!

2013年11月5日星期二

More bandwidth means more testing


The use of MPO cables for trunking 10-Gbps connections in the data center has steadily risen over the past 10 years. That trunking requires use of a cassette at the end of the MPO cable designed to accommodate legacy equipment connections. Now that 40-Gbps and 100-Gbps connections are coming on the market, a migration path has emerged: Remove the 10-Gbps cassette from the MPO cable and replace it with a bulkhead accommodating a 40-Gbps connection. Then it might be possible to remove that bulkhead and do a direct MPO connection for 100 Gbps at a later date.
The problem is that while this migration strategy is an efficient way to leverage the existing cabling, in comparison to 10-Gbps connections, the 40-Gbps and 100-Gbps standards call for different optical technology (parallel optics) and tighter loss parameters.
In short, each time you migrate you need to verify the links to ensure the performance delivery the organization requires.
To understand the challenges of MPO cable validation, it’s necessary to understand MPO cables and how they’re tested in the field. An MPO connection is about the size of a fingernail and contains 12 optical fibers, each less than the diameter of a human hair – and each one needs to be tested separately. That traditionally means the use of a fan-out cord to isolate each fiber, followed by tedious manual testing, tracing, and error-prone calculations.
The actual fiber test is quick enough: typically under 10 seconds per fiber once you’re in process. But you better be cruising: While one of our enterprise customers has data centers with as little as 24 MPO fiber trunks (x12 fibers each), that same customer also has a 30,000-MPO data center installation. That’s 30,000 connections with 12 fibers each, or roughly 3,120 hours in labor (and $343,200 in cost) if you had to test them all individually.
And at some point, you better have tested them. There were two primary drivers behind development of MPO fiber trunks. The first was the ever-increasing need for cabling density in the data center. Cabling blocks airflow, so the denser the cable, the better the thermal management. And, as data center bandwidth steadily climbs to 10, 40, and 100Gbps, a dense multi-fiber cable becomes the only option.
But the second, perhaps more important factor, is the difficult and highly technical nature of field termination for fiber. We’re talking curing ovens, adhesives, microscopic fibers, etc. Given that expensive and time-consuming “craft” process, modular factory-terminated MPO cables promise simplicity, lower cost, and true plug-and-play fiber connectivity.
The challenge is that pre-terminated fiber is only guaranteed “good” as it exists in the manufacturer’s factory. It must then be transported, stored, and later bent and pulled during installation in the data center. All kinds of performance uncertainties are introduced before fiber cables are deployed. Proper testing of pre-terminated cables after installation is the only way to guarantee performance in a live application. In short, investing in factory-terminated fiber trunks to save time and decrease labor costs doesn’t really offer an advantage if the testing becomes an expensive bottleneck.
Testing and determining fiber polarity is another challenge. The simple purpose of any polarity scheme is to provide a continuous connection from the link’s transmitter to the link’s receiver. For array connectors, TIA-568-C.0 defines three methods to accomplish this: Methods A, B, and C. Deployment mistakes are common because these methods require a combination of patch cords with different polarity types.
You can buy fiber optic jumpers with any connectors from FiberStore.

Fiber optical system operating wavelengths


A wide range of the optical system operating wavelengths can provide a very high capacity for the optical transmission system. The optical fiber type, source characteristics, system attenuation rang and dispersion of the optical path decide the operating wavelength range.
Singlemode fiber system spectral bands in ITU-T Recommendations:
1) “Original” O-band, 1260nm to 1360nm
Cable cut-off wavelength decide the lower limited wavelength is 1260nm. The upper linit 1 360 nm was chosen as to the rising edge of the “water” attenuation band peaked at 1 383 nm
2) “Extended” E-band, 1 360 nm to 1 460 nm.
Recommendation ITU-T G.652 also includes fibres with a low water attenuation peak, which
allows the utilization of the band above 1 360. The effects of a small water peak are negligible
at wavelengths beyond about 1 460 nm;
3) “Conventional” C-band, 1 530 nm to 1 565 nm.
Initially, erbium-doped fibre amplifiers (EDFAs) had useful gain bands beginning at about
1 530 nm and ending at about 1 565 nm. This gain band had become known as the “C-band”;
4) “Short wavelength” S-band, 1 460 nm to 1 530 nm.
The lower limit of this band is taken to be the upper limit of the E-band. The upper limit is
taken to be the lower limit of the C-band. EDFAs have become available with relatively flatter
and wider gains and application of EDFAs to this band is possible at least in a part of the band.
Some wavelengths of this band may also be utilized for pumping of optical fibre amplifiers,
both of the active-ion type and the Raman type;
5) “Long wavelength” L-band, 1 565 nm to 1 625 nm.
For the longest wavelengths above the C-band, fibre cable performance over a range of
temperatures is adequate up to 1 625 nm for current fibre types;
You can buy fiber optic jumpers and fiber pigtails from FiberStore now!

2013年11月4日星期一

FiberStore Info

http://www.youtube.com/v/ep1f1B3HlI8?autohide=1&version=3&attribution_tag=s7vqwtEbDSbQu8HYtlp7-g&feature=share&autoplay=1&autohide=1&showinfo=1

2013年10月31日星期四

The factors which will affect the fiber splicing result


I get the answer from a professional fiber splicing engineer- William Graham
He tell that:
1 Keep the fiber splicer and fiber cleaver in the case when not in use.
2 Be sure you are set on the proper splicing program for the fiber you are splicing.
3 Don't expect good splices under adverse conditions of dirt, dampness and wind. Create good splicing conditions.
4 Keep the dome and heater covers closed unless you are splicing or heating
5 Close the cleaves as soon as you take out the cleaved fiber
6 Clean your splicer before you start splicing.
7 Use an air bulb and fine brush for cleaning.
8 Do not used spray cans or the propellants might do damage.
9 If splicing gel filled cable ensure it is really clean so you don't gum up the splicer.
10 Clean any gummed up grooves with a piece of sharp wood. Never use metal.
11 Charge the battery when you finish. The splicer we use will do over 200 splices and heats on a charge.
12 Have a stable and secure place for your splicer when splicing. If it drops on the floor it is probably garbage.
13 Keep your shrink splice sleeves in a sealed container (ziplock bag)
14 If you drop the shrink splice sleeve on the floor, leave it there.
15 Never clean the fiber with alcohol after you have cleaved it or you might cause reflections.
16 Have the splicer serviced (calibrated) when necessary
17 Clean the cleaver before you start with a fine brush and alcohol, especially if using gel filled cable.
18 Close the cleaver between cleaves to keep out air-borne dirt.
19 And, finally, if you drop the cleaver on the floor its value will be drastically diminished.
Manage your fiber ends and empty the scrap container at the end of the day.
Do the splice job as above points, you will get a good splice. Additionally, I also have a write a tutorial about fiber splicing process. You can read all from here. http://www.fiberstore.com/Optical-Fusion-Splicing-Tutorial-aid-350.html and if you need fiber optic jumpers also can sent requriments to sales@fiberstore.com

2013年10月18日星期五

A clear understanding of the difference between fiber pigtail and patch cord


Previously, I only know different in appearance of the fiber pigtail and patch cord.
The fiber optic patch cord = fiber optic connector + fiber optic cable + fiber optic connector
IMG_5915
but the fiber optic pigtail = fiber optic connector + fiber optic cable. I think like this is easy to separate between them.
12fibers SCUPC SM pigtail
Recently, I have readed a discussion about the difference between fiber pigtail and patch core. There are so many professinal people to discuss it. They give me a clear understanding that:
Patch cords are made from either single or multi-fiber cables (usually rated for indoor use) and connected at each end with fiber cable connectors (either single fiber or multiple-fiber connector). Sometimes patch cords are called jumpers, especially if they are simplex or dulex. The connectors are selected to mate with the interfacing equipment or cable connectors. The important idea is that the cable has a connector at each end. The fiber can be either tight or loose buffered and the cable can be made of various diameters (1.2 mm to 3.0 mm are common). The patch cord may have one type of connector (ST FC, SC, LC, etc) on one end and a different connector on the other as long as all the fibers are connectorized on each cable end - this is a transition jumper. Patch cords are commonly used to connect ports on fiber distribution frames (FDFs). The  new mpo connecter make it  possible to run a singel cable that automatically terminates 12 fibers in one easy plug in.  Compared to common patch cord with ST FC, SC, LC connetor, MPO cable is a truly innovative and amazing group of products that really takes fiber optics into the new millennium.
mtpmpo3
A pigtail is a cable (like a pach cord or jumper) with only one end terminated with an optical connector. Patch cords are often cut into shorter lengths to make two pigtails. Pigtails are found anywhere, but more commonly in optical assemblages or optical components
Pigtails are installed where they will be protected and spliced,lets say on the inside of the ODF and that's why they are normally not sheathed. They have a coating colour so that you slice them on the corresponding colour on the out coming fiber.
On the other hand patch codes are used between the ODF to the WDM MUX or equipment. If you cut a patch code for use as pigtail then in case of future faulting where you are dealing with multiple pairs it will be difficult. But still if you need to cut the patch code check on its characteristics.
In general, the only major physical differnce b/w patch cord & pigtail is that patch cord is a fixed length piece of cable with dual ended fiber connector type may vary & pigtail is one meter standard OFC core with white white colored jacket. As per standard pigtail can only be used for OFC termination purpose & patch cord is to be used to connect the active component with ODF so that means pigtail can not be used at the place of patch cord.

2013年10月10日星期四

What are MPO and MTP connectors?


The fiber optic products: MPO MTP cables are offered for various applications for all networking and device needs like 100 Gig modules. They use a high-density multi-fiber connector (MPO connector and MTP connector) system built around precision molded MT ferrule. So what are MPO and MTP connectors?
What is an MT ferrule?
MT stands for Mechanical Transfer. The MT Ferrule is a multi-fiber ferrule in which fiber alignment is dependent on the eccentricity and pitch of the fiber and alignment pin holes. The alignment is dictated by the alignment pins during mating.
The critical elements for fiber alignment are:
1. The ability to hold extreme tolerances for precision during the molding process
2. The shape, tolerances and material composition of the alignment pins
What is a MPO connector?
MPO is the industry acronym for "Multi-fiber Push On." The MPO-style connectors are most commonly defined by two different documents:
1. IEC-61754-7 is the commonly sited standard for MPO connectors internationally
2. EIA/TIA-604-5, also known as FOCIS 5, is the most common standard sited for in the US
What is a MTP connector?
The MTP connector is a high performance MPO connector with multiple engineered product enhancements to improve optical and mechanical performance when compared to generic MPO connectors. It is in complete compliance with all MPO connector standards including the EIA/TIA-604-5 FOCIS 5 and the IEC-61754-7. It is inter-matable with all generic MPO-style connectors that are compliant to these industry standards. Generic MPO connectors are limited in performance and are not able to offer the high performance levels of the US Conec MTP connector.
Is the MTP connector an MPO connector?
Yes. The MTP connector is a high performance MPO connector engineered for better mechanical and optical performance.
What makes the MTP connector superior to generic MPO connectors?
The MTP connector has features and benefits that are not available on generic MPO connectors. Some of the key distinctions include:
1. The MTP connector housing is removable. This feature allows the customer to:
A. Re-work and re-polish the MT ferrule
B. Change the gender after assembly or even in the field
C. Scan the ferrule interferometrically after assembly
2. The MTP connector offers ferrule float to improve mechanical performance. This allows two mated ferruled to maintain physical contact while under an applied load.
3. The MTP connector uses tightly held tolerance stainless steel guide pin tips with an elliptical shape. The elliptical shaped guide pin tips improves guidance and reduces guide hole wear.
4. The MTP connector has a metal pin clamp with features for centering the push spring. This feature:
A. Eliminates lost pins
B. Centers spring force
C. Eliminates fiber damage from spring
5. The MTP connector spring design maximizes ribbon clearance for twelve fiber and multifiber ribbon applications to prevent fiber damage.
6. The MTP connector is offered with four standard variations of strain relief boots to meet a wide array of applications.
A. Round, Loose Fiber Cable Constructions
B. Oval Jacketed Cable
C. Bare Ribbon Fiber
D. Short boot which reduces the footprint by 45%. Ideal for use in space limited applications.
Fiberstore supply mtp/mpo terminated fiber optic cable. mtp fiber or mpo fiber you can choose.  FiberStore offer singlemode and multimode (OM1, OM2, 10G OM3, 10G OM4)  MPO/MTP Cable. Singlemode MPO/MTP cable is primarily used for applications involving extensive distances, 10G MPO/MTP cable provide 10 gigabit data transfer speeds in high bandwidth applications and they are 5 times faster than standard 50um fiber cable. Work with both VCSEL laser and LED sources. The meanwhile, we also provide 40G/100G MPO/MTP trunk cable. The fiber optic cable prices with mtp/mpo connectors are flexible. We can supply any cut length


2013年10月9日星期三

MTP MPO Fiber Cable Assemblies


MTP fiber or MPO fiber a new type of cabeling that is used for patching, Patching between patchpanels and network equipment. MPO / MTP is stands for “Multiple-Fibre Push-On/Pull-off”.
MPO is Multiple-Fibre Push-On connector. MPO connector, designed by US Conec Ltd., is simply tunned MPO connector with better optical and mechanical performance. The purpose of this technology is that you can pull just 1 single cable with for example 12 fibers. So in stead of patching 12 seperate fiber cables you only patch 1 cable with 1 connector.
Some MTP/MPO terminology:
MTP/MPO fanouts (In stock now)
MTP/MPO Trunks
MTP/MPO casettes
Direct Splits (MT /MPOto LC or MTP/MPO to SC cables)
>MTP/MPO fanouts (Hybrid and haness)
MTP fanout cables are cables that are multiple cables that are bundeled within the same jacket.
This is also often refered as a Breakout cable.
Hybrid/Fanout MTP/MPO Trunk Cables Features and Applications:
1.For fanout the fibers from MPO/MTP connectors into individual simplex or duplex connector
2.To install directly into system equipment ports or patch panels
3. MPO/MTP on one end, with single-fiber connectors on another end
4. Fiber counts available in 12 / 24 / 36 / 48 / 72 /96 / 144-fibers
5. Single-fiber connector interface available in SC, ST, LC, MTRJ in forms of Simplex or Duplex channeling
6. Customized furcation length to cater for different installation situations
7.Ruggedized furcation legs: Round fanout kit with 2.0 mm or 3.0 mm legs to single-fiber connectors
>MTP/MPO Trunks
The MTP trunk cable is designs for Data Center Applications. This cable is a round cable with the outer diameter of 3,0 mm or 4,5 mm (with two jackets on both sides). The connectors where this cable is terminated on is the so called MTP connector (female).
Features:
1. Ideal for high density Datacenter application, choice from 12 to 144-fiber cable
2. One end MPO with guiding pins, connect to trunk cable thru MPO adapter
3. One end MPO without guiding pins, connects to cassette module or hybrid trunk cable
4. Rest of the specifications are same as trunk cable
>MTP/MPO casettes
The MTP casette is nothing more then a basic case which splits out MTP to SC/LC connectors.
>Direct Splits (MTP to LC or MTP to SC cables)
MTP Direct Split cables are cables with the fanout made directly in the MTP connector. These are designed for high density Data Center applications to plug into MTP casettes and/or MTP patchpanel
The souce from: http://www.fiberstore.com/MTP/MPO-Fiber-Solution-aid-343.html

2013年9月26日星期四

The difference of multimode and single mode fiber


Single mode cable is a single stand (most applications use 2 fibers) of glass fiber with a diameter of 8.3 to 10 microns that has one mode of transmission. Single mode fiber with a relatively narrow diameter, through which only one mode will propagate typically 1310 or 1550nm. Carries higher bandwidth than multimode fiber, but requires a light source with a narrow spectral width.
Single-mode fiber gives us a higher transmission rate and up to 50 times more distance than multimode, but it also costs more. Single-mode fiber has a much smaller core than multimode. The small core and single light-wave virtually eliminate any distortion that could result from overlapping light pulses, providing the least signal attenuation and the highest transmission speeds of any fiber cable type.
Multi mode cable diameter is a little big, with a common diameters in the 50-to-100 micron range for the light carry component (in the United States, the most common size is 62.5um). In most applications, the use of multimode optical fiber, two fibers (WDM, usually without the use of multimode fiber). POF is a relatively new based on the plastic of the cable, the cable's commitment is similar to that of the performance on the glass cable very short run, but at a lower cost.
Which types fiber to install ? This is based on transmission distance to be covered as well as the overall budget allowed. If the distance is less than a couple of miles, multimode fiber will work well and transmission system fiber optic cable price (transmitter and receiver) will be in the $500 to $800 range. If the distance to be covered is more than 3-5 miles, single mode fiber is the choice. Transmission systems designed for use with this fiber will typically cost more than $1000 (due to the increased cost of the laser diode).
If you have single-mode fiber indtalled, but only go a short distance. you can not use multimode equipment for lower cost. Multimode equipment will not inject enough light into a single-mode fiber since the light carrying core of this fiber is only 9 microns in diameter compared to 62.5 microns in diameter for multimode fiber. Unfortunately you must use single-mode equipment. If the fiber distance is short however, the cost for replacing the single-mode fiber with multimode fiber may be more economical than the higher cost for the single-mode electronics.
The more information about fiber, fiber optic cable providers- Fiberstore can give you.

2013年9月18日星期三

Three types fiber optic cable based on Fiber types


Based upon fiber types in a cable, fiber optic cables can be categorized as three types.
Single Mode Fiber Optic Cable-All fibers in the cable are single mode fibers
Single mode fiber is a single stand (most applications use 2 fibers) of glass fiber with a diameter of 8.3 to 10 microns that has one mode of transmission. Single Mode Fiber with a relatively narrow diameter, through which only one mode will propagate typically 1310 or 1550nm. Carries higher bandwidth than multimode fiber, but requires a light source with a narrow spectral width.
Single Mode fiber is used in many applications where data is sent at multi-frequency (WDM Wave-Division-Multiplexing) so only one cable is needed - (single-mode on one single fiber)
Single-mode fiber gives you a higher transmission rate and up to 50 times more distance than multimode, but this fiber optic cable price is highter. Single-mode fiber has a much smaller core than multimode. The small core and single light-wave virtually eliminate any distortion that could result from overlapping light pulses, providing the least signal attenuation and the highest transmission speeds of any fiber cable type.
Multimode Fiber Optic Cable - All fibers in the cable are multimode fibers.
Multi mode Fiber has a little bit bigger diameter, with a common diameters in the 50-to-100 micron range for the light carry component (in the US the most common size is 62.5um). Most applications in which Multi-mode fiber is used, 2 fibers are used (WDM is not normally used on multi-mode fiber). POF is a newer plastic-based cable which promises performance similar to glass cable on very short runs, but at a lower cost.
Multimode fiber gives you high bandwidth at high speeds (10 to 100MBS - Gigabit to 275m to 2km) over medium distances. Light waves are dispersed into numerous paths, or modes, as they travel through the cable's core typically 850 or 1300nm. Typical multimode fiber core diameters are 50, 62.5, and 100 micrometers. However, in long cable runs (greater than 3000 feet [914.4 meters), multiple paths of light can cause signal distortion at the receiving end, resulting in an unclear and incomplete data transmission so designers now call for single mode fiber in new applications using Gigabit and beyond.
Hybrid/Composite Cable-Both single mode and multimode fibers are packaged in one cable
Both single mode and multimode fibers are packaged in one cable, such as 4 multimode fibers and 4 single mode fibers in a single cable. Hybrid fiber cable offers the same great benefits as our standard indoor/outdoor cables, with the convenience of installing multimode and singlemode fibers all in one pull. Our composite cables offer optical fiber along with solid 14 gauge wires suitable for a variety of uses including power, grounding and other electronic controls.
Hybrid fiber cable or composite fiber optic cable is designed for integrating voice, data, video and power. They are used in control, distribution and signaling systems applications. Perfect for surgical tools, sensing equipment and sensors, MRI suites, oncology suites and x-ray rooms. FiberStore can manufactur single-mode and multimode hybrid cables and composite cables with any length.

2013年9月17日星期二

what is Armored cable?


Definetion
Armored cable is an alternative to running conduit in difficult locations. Instead of running rigid metal pipe that has to be screwed together in twisting or tight locations, it is often easier just to thread flexible armored cable into place. Armored cable comes rolled in spools like regular cable, and is typically available with two, three, or four individually insulated conductors in a variety of sizes1.Armored Fiber Optic Cable is used by the military, industrial applications as in petrochemical, industrial plants including nuclear and utilities are installed by direct burial in areas where rodents are a problem. The armored construction provides additional crush and rodent protection, and this means the armored cable is conductive, so it must be grounded properly.
Types: There are three basic types of metal-covered cable; all are referred to as armored cable. BX is the oldest form. This cable type went into production during World War II and saw heavy use for several years. While this cable provided the protections common in armored cable, it had a tendency to leak, and its grounding system was poor.True armored cable is essentially just a heavier form of BX. It features a better grounding system and a heavier internal insulation. The process used to cover the cable in its metal covering allows for better waterproofing and an overall tougher design.The last style of armored cable is metal-clad (MC) cable. MC cable uses a different grounding system from true armor cable and may have additional waterproofing. This is the newest type of metal-covered cable and is found in a wide range of commercial and industrial buildings.
The advantages make the armored fiber optic cable price higher than others:
It comes preloaded with wires already in it so you don’t have to fish them through yourself.
It provides its own ground bonding.
It can be run in places ordinary conduit cannot.
It provides a great deal of protection from damage by screws or nails as compared to ordinary insulated cable.

2013年9月9日星期一

Fiber optic communications have become mainstream


Fiber optic communications have become mainstream, fiber optic cable sale also received the favor of businessman. Fiberstore, as the leading fiber fiber optic cable providers, have 10 years history on the field of fiber optic communications. The global, vertically-integrated business model and expertise in optical design enables FiberStore to rapidly deliver market-leading, high performance fiber optic components and subsystems. The R&D and engineering teams provide strong innovative capability , who have core technical knowledge ranging from optoelectronic device, optical subassembly, and module design, to product and manufacturing process development expertise. With over 200 employees primarily in Dong Guan and ShenZhen, we can serve the customers and distribution partners around the world fast. What's more, our custom service and wholesale service save customers' time and money, making customers enjoy personalization.
Fiber optic communications explains about the way communication takes place through optical fiber. Although its history is short the use of optical fiber has grown considerably when compared with its beginning. It is now seen as one of the most used factors where communication is concerned. Below you will find a more detailed description of what optical fiber is.
The question you might ask yourself is why you should change from your current source to optical fiber. Well, if you simply look at the growing need for communication, you will be able to make a more informed decision. The trend in communication has moved from information that is communicated to more information digitalized. All communication information cannot be possible without a carrier that will have to contain more bandwidth. As frequency determines the carrier’s bandwidth and light carries the highest frequency, it has therefore been found that fiber optics is the strongest way of carrying the needed light.
As it has been confirmed that light is the best carrier of information, the conducting of light will be an important factor in hosting all the information successfully. As fiber optics is a transparent and flexible filament, it has been shown to carry the light in the most effective way. Another important factor is that optical fiber will follow the internal reflection law in order to transmit the light and therefore the information.
Light waves need to be transmitted and received in the correct way and is made possible by the laser diode and photodiode that are the two key components to the fiber optics.
With all these carefully thought out innovations, fiber optics has now become the most successful tool in connecting people from all over the globe.


2013年9月5日星期四

PM Fiber cable? What's that?

Polarization Maintaining (PM) Fiber cable is made with a special fiber that maintains the polarization of light waves. It is used in instrumentation, measurement and in some applications where stability is required at speeds above 10Gbps Polarization Maintaining (PM) Cable Assemblies from Fiberstore give you the quality and precision you need. Polarization Maintaining fiber is used in applications requiring the light to maintain polarization as it propagates down the core of a fiber. PM fiber is commonly utilized in the telecommunications, sensor, and specialized photonics industries. With multiple packaging options, Fiberstore can provide you an exact solution for your PM fiber requirements. For more about Polarization Maintaining cable, please attention to fiber optic cable sale on Fiberstore