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