Category Archives: Fiber Optic Cables

Ribbon Cable – the Cable Suitable for the Highest Fiber Packing Density

Ribbon Fiber Cable has recently emerged as a primary cable choice for deployment in campus, building, and data-center backbone applications, as they provide the highest fiber density relative to cable size, maximize utilization of pathway and spaces and facilitate ease of termination.

Figure 1: Ribbon Cable in Data Center Backbone

What is Ribbon Fiber Cable

Ribbon Fiber Cable is just another type of fiber optic cables. It looks like a ribbon so that we usually call it ribbon fiber cable. A ribbon fiber cable consists of a lot of bare fibers which are lined up side-by-side in parallel, color coded and is coated with a thin tape or film. The key feature of ribbon cable is its higher fiber density. This is very important for the upstream applications which require high fiber-count cables.

Ribbon cable offers robust performance equivalent to the stranded loose tube cable. It provides the maximum fiber density relative to cable diameter when compared to stranded loose tube designs. The cable design characteristically consists of 12 to 216 fibers organized inside a central tube.

Types of Ribbon Fiber Cable

We know that ribbon fiber cable consists of a lot of bare fibers which are lined up side-by-side in parallel. By the shape of it outside apperance, it can be divided to flat ribbon cable and round ribbon cable. The only difference between round ribbon cable and flat ribbon cable is the shape. The parallel bare fibers are lined in the same way in both the two types of ribbon cables.

Figure 5: Round Ribbon Cable flat  optic ribbon cable

By the type of fiber, the ribbon cables can be classified as singlemode and multimode. There are also flame-retardant and non-flam-retardant outjacket of them. A non-flame-retardant jacket material is typically used in outside plant applications. Specially formulated flame-retardant outer jackets are used for indoor applications.

Ribbon Optical Cable Termination

For many years, designers and installers have been reluctant to specify ribbon optical cable in the Local-Area-Network(LAN) and data center because 12-fiber ribbon field terminations were limited. With the introduction of innovations such as ribbon splitting tools, ribbon furcation kits and field-installable 12-fiber array connectors, 12-fiber ribbons are easily terminated with simplex and duplex connectors such as LC or SC connectors or with the MTP Connector. The MTP Connector is a 12-fiber push/pull optical connector with a foot-print similar to the SC simplex connector. These high-density connectors are used to significantly accelerate the network cabling process, minimize errors and reduce congestion in patch panels.

What’s more, in a ribbon cable, each wire in the cable is used to connect two corresponding connectors. It is very important, then, that the correct wire attach to each end. Manufactures have introduced a color coding system to simplify this process, and help prevent connecting the wrong connectors. The wire is colored differently so that they can be easily identified.

Advantages of Ribbon Fiber Cables

  • The first advantage of ribbon cable is maximizing utilization of pathway and spaces, especially in campus and data center backbones where space is a premium. Ribbon cables offer up to 45 percent space savings and three times the fiber tray capacity over traditional bulkier cable solutions while minimizing cable tray weight.
  • The second advantage of ribbon cable is saving money and time. A ribbon fiber cable allows 12 fibers to be spliced together at one time so that it reduces labor time and saving money. Moreover, restoration time is much quicker with a ribbon fiber cable when a cable cut occur.
  • Except the advantages above, ribbon fiber cable can be usually spliced to a loose tube cable. It is a common practice to take 12 loose fibers and build a ribbon for mass fusion splicing. It is also a common practice to remove the over coating from a ribbon and splice single fibers together.
Summary

Ribbon fiber cable is now being deployed in areas where stranded loose tube  have historically been used. The cable offers the highest fiber packing density to maximize pathway and space utilization in ducts and raceways as well as patch panels. Preterminated or field-terminated ribbon cable is now easily obtained using traditional simplex or duplex connectors as well as MTP Connectors.


Marketing: Fiberstore supplies ribbon fiber cables which can be widely used in Local Area Network (LAN) campus and building backbones as well as datacenter backbones. For more information about ribbon cables, please log in Fiberstore’s website.

Multimode Fiber Optic Patch Cable

As we talk about multimode fiber optic patch cable, singlemode fiber optic patch cable will inevitably come into mind. We know that fiber optic patch cable can be divided into singlemode and multimode according to the types of the cable, but what’s the difference between singlemode and multimode patch cables? How many types are there of multimode patch cables? What’s the application of multimode patch cables? This text will solve the questions above one by one.

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Difference between Singlemode and Multimode Patch Cables

Optic patch cable is a cable with two connectors at both ends. The center of it is glass core which is optic transmission media. The diameter of glass core in multimode patch cable is 50μm~65μm, which is roughly comparable to the thickness of a human’s hair. The diameter of glass core in singlemode patch cable is 8μm~10μm.

The main difference between singlemode and multimode patch cables falls on the fiber cables.The lighting device of multimode fiber cable is LED, while singlemode fiber cable is LD. Multimode fiber cable allows multiple beams of light passing through, while singlemode fiber cable allows one beam of light passing through. As modal dispersion happens in multimode fiber cable, the transmission distance is relevantly nearer than singlemode fiber cable in which modal dispersion never happens. Therefore, multimode fiber cable is generally used in relevantly recent regions network connections, while the singlemode fiber cable is often used in broader regions.

Types of Multimode Fiber Optic Patch Cable

Multimode fiber optic cables can be divided into OM1, OM2, OM3, and OM4 based on the types of multimode fiber. The letters “OM” stands for Optical Multimode. OM1 and OM2 belong to traditional multimode fiber patch cable, while OM3 and OM4 belong to new generation fiber patch cable which provides sufficient bandwidth to support 10 Gigabit Ethernet up to 300 meters. The connector types include LC, FC, SC, ST, MU, MTRH, E2000, MPO, ESCON and so on. Different type of connector is available to different equipment and fiber optic cable.

By the optic fiber cable jackets, multimode fiber patch cable can be divided into PVC multimode patch cable, LSZH multimode patch cable, plenum multimode patch cable, and armored multimode patch cable. PVC is non-flame retardant, while the LSZH is flame retardant and low smoke zero halogen. Plenum is compartment or chamber to which one or more air ducts are connected and forms part of the air distribution system. Because plenum cables are routed through air circulation spaces, which contain very few fire barriers, they need to be coated in flame-retardant, low smoke materials. Armored fiber patch cable use rugged shell with aluminum armor and kevlar inside the jacket, and it is 10 times stronger than regular fiber patch cable.

Application of Multimode Fiber Optic Patch Cable

Multimode fiber optic patch cable is commonly used to connect optical transceiver with optic pigtail. OM1 and OM2 cables are commonly used in premises applications supporting Ethernet rates of 10Mbps to 1Gbps, which are not suitable though for today’s higher-speed networks. OM3 and OM4 are best options of Multimode today. For prevailing 10Gb transmission speeds, OM3 is generally suitable for distance up to 300 meters, and OM4 is suitable for distance up to 550 meters.

Fiber Optic Cleaning and Inspection of Connectors & Adapters

Cleanliness of fiber optic connections is critical to the performance of optical communication networks. Contamination on a connector end face, even if only at the microscopic level, can create severe problems. Traditional single mode fiber optic core diameters are approximately 9 microns. By comparison, a human hair is 50 microns or larger in diameter. Contamination that blocks the fiber core generates strong back reflections (Return Loss), and may effect attenuation (Insertion Loss). Loose contamination on the connector end face that may not block the core may move during de-mating, or may prevent physical glass-to-glass contact required for proper signal transmission. Rigid contamination trapped between connector end faces may permanently damage the fiber core(s). Dry contaminates are relatively simple to remove compared to oils and films which naturally occur with human contact, vapor condensation, and solvent evaporation.

Fiberstore offers various kinds of fiber optic cleaning and inspection tools and kits that can service SC, ST, LC and MPO connectors etc. Here is a list of basic cleaning steps and recommendations for each connector type. After cleaning, always inspect the connector end face with an appropriate microscope to verify that it is free of dirt, smudges and/ or scratches.


Cleaning Single Fiber Connectors (LC/SC/ST) and Adapters

Connector Ferrule – Exposed Endface

Dry Cleaning: Using reel-based cassette cleaner with medium pressure, wipe connector endface against dry cleaning cloth (single swipe per exposure) in one direction. For Angled Physical Contact (APC) polished connectors, ensure that entire endface surface mates with the cleaning cloth. Dry cleaning will generally remove airborne contamination and should be attempted first. Inspect connector endface for contamination after cleaning.

IBC Cleaner M250Another method is to use single fiber In-Bulkhead Cleaner (IBC, a Brand of fiber optic cleaner) that is especially designed for both Physical Contact (PC) and APC polished connectors. This device feeds a cleaning cloth across a head while the head rotates. Cleaning cloth is advanced to ensure it is clean. Install connector into a clean adapter and after inserting cleaner tip inside the adapter from the opposite end, press lever to initiate cleaning. Some single fiber IBC cleaners offer intuitive cleaning with audible push when engaged. Always inspect connector endface for contamination after cleaning.

Wet Cleaning: Lightly moisten portion of a lint free wipe with fiber optic cleaning solution (or > 91% Isopropyl Alcohol) and by applying medium pressure, first wipe endface against wet area and then onto dry area to clean potential residue from the endface. For APC polished connectors, ensure entire endface surface mates with the cleaning wipes. Wet cleaning is more aggressive than dry cleaning, and will remove airborne contamination as well as light oil residue and films. Perform dry cleaning as described above after wet cleaning and inspect connector endface for contamination after cleaning.

Caution: Always clean sides and tip of ferrule. Core alignment may be affected if ferrule is not thoroughly cleaned.

Connector Ferrule – Bulkhead Adapter Application

Dry Cleaning: Insert appropriate size cleaning stick tip into the adapter until a contact is made with the connector on the opposite end. Cleaning sticks are available for both 1.25 mm ferrule connectors (LCs) and 2.5 mm ferrule connectors (SC and ST). Rotate the cleaning stick with medium pressure in one circular motion as it is pulled from the adapter. Inspect endface for any contamination after cleaning. Another method is to use IBC cleaners. Insert cleaner tip inside the adapter until a contact is made with the connector on opposite end and press lever to initiate cleaning.

Wet Cleaning: Insert a lightly moistened appropriate size cleaning stick tip with fiber optic cleaning solution (or > 91% Isopropyl alcohol) into the adapter until a contact is made with the connector on opposite end. Rotate the cleaning stick with medium pressure in one circular motion as it is pulled from the adapter. Follow up with a dry cleaning stick and complete with dry cleaning method using IBC cleaners. Always inspect connector endface for contamination after cleaning.

Caution: Discard cleaning sticks after each use. Do not turn the cleaning stick back and forth pressing against connector endface, this may cause scratches if a large contamination is present.

Single Fiber Adapters – Exposed/Bulkhead Adapter Application

Dry Cleaning: For both exposed and connector mated adapter, insert dry adapter cleaning stick (or fiber adapter sleeve brush) inside the adapter and pull out with twisting motion, cleaning inside surface of alignment sleeve. After cleaning adapter with connector installed on one end, inspect connector endface for contamination.

Wet Cleaning: For both exposed and connector mated adapter, insert adapter cleaning stick (or fiber adapter sleeve brush) moistened with fiber optic cleaning solution (or > 91% Isopropyl Alcohol) inside the adapter and pull out with twisting motion, cleaning inside surface of alignment sleeves. Follow up with a dry swab. After cleaning adapter with connector installed on one end, inspect connector endface for contamination.

Caution: Discard cleaning sticks after each use. Do not rotate the cleaning stick back and forth while pressed against connector endface; this may cause scratches if a large contamination is present.


Cleaning Multi-Fiber Array Connector (MPO or MTP) and Adapter

Connector Ferrule – Exposed Endface

Dry Cleaning: Using reel-based cassette cleaner with medium pressure, wipe against dry cleaning cloth (single swipe per exposure) in one direction. There are special cleaners available, which can be used for the pinned and the unpinned (PC and APC polished) MPO/MTP connectors. For APC MPO/MTP connectors, ensure that entire endface surface mates with the cleaning cloth. Dry cleaning will generally remove airborne contamination and should be attempted first. Always inspect connector endface for contamination after cleaning.

IBC Cleaner for MPO/MTP ConnectorsAnother method is to use reel based MPO/MTP IBC cleaner especially designed for cleaning both the pinned and the unpinned (PC and APC polished) MPO/MTP connectors. Insert MPO/MTP connector into the cap at the tip into the cleaner, and rotate the cleaner wheel to clean the connector endface. Always inspect connector endface for contamination after cleaning.

Wet Cleaning: For unpinned MPO/MTP connector, lightly moisten lint free wipe with fiber optic cleaning solution (or > 91% Isopropyl Alcohol) and by applying medium pressure, wipe endface of the MPO/MTP connector in a direction perpendicular to fiber array. Repeat process using dry lint-free wipe. For APC MPO/MTP connectors, ensure that entire endface surface mates with the cleaning cloth. Follow up with dry cleaning using MPO/MTP IBC cleaner as described above and always inspect connector endface for contamination after cleaning.

For wet cleaning of pinned MPO/MTP connector, fold the moistened wipe and using creased portion with medium pressure, wipe endface of the MPO/MTP connector in a direction perpendicular to fiber array. Repeat process using dry lint-free wipe. For APC MPO/MTP connectors, ensure that entire endface surface mates with the cleaning cloth. Follow up with dry cleaning using MPO/MTP IBC cleaner as described above and always inspect connector endface for contamination after cleaning.

Another wet cleaning method for both pinned and unpinned MPO/MTP connector is to use lightly moistened 2.5 mm SC/ ST cleaning stick tip with fiber optic cleaning solution (or > 91% Isopropyl alcohol). With damp tip, clean the pins by holding the tip parallel to pins such that the tip end contacts ferrule. Applying medium pressure, wipe the cylindrical surface of the pins, the connector endface in direction perpendicular to fiber array and all the way around each pin. Repeat process using dry cleaning stick tip. Follow up with dry cleaning as described above. Always inspect connector endface for contamination after cleaning.

Caution: To prevent scratching the end face, always clean the MPO/MTP connectors with a cleaning motion from top to bottom perpendicular to fiber array. Never clean the MPO/MTP connector by rubbing across it from side to side (parallel to fiber array). Discard cleaning sticks after each use.

MPO/MTP Adapter – Exposed/ Bulkhead Adapter Application

Wet Cleaning: Remove MPO/MTP connectors from adapters. Wipe inside surface with cleaning stick moistened with fiber optic cleaning solution (or > 91% Isopropyl Alcohol). Follow up with dry cleaning stick. After cleaning adapter with connector installed on one end, inspect connector endface for contamination.

Article Source: http://www.fiberopticshare.com/fiber-optic-cleaning-and-inspection-of-connectors-adapters.html

The Relationship between the Cut Off wavelength and Optical Fiber

What is cut off wavelength? When many people see the item they may ask such question. Well, cut off wavelength can be defined as the wavelength below a singlemode fiber wavelength and they usually acts as multimode fiber, meaning it will allow propagation of more than one mode at a time. In another word, cut off wavelength above singlemode operation but it is ensured in a singlemode fiber.

Fiber cut off wavelength depends on the method of fixing the fiber. We all know that fiber optic cable can be putted into loose tubes or tightly coated with elastomeric or PVC or Nylon, to make tight buffered fiber or the matrix to be fiber optic ribbon. Cut off wavelength reduces the numbers of bends in fiber, so the cut off wavelength plays an important role in singlemode fiber at the defining the wavelength region of singlemode fiber. It reminds me that I have met a product from Corning, it mainly told us the cut off wavelength is the quite important for the fiber in defining the region of singlemode operation and then Corning said, bends and stress makes the cut off wavelength to a lower value.

Cut-off wavelength is the wavelength above which an optical fiber will allow singlemode transmission. Cut off wavelength can also be defined as the wavelength below which multimode transmission starts. It just means that above a certain wavelength, multiple modes stopped and singlemode optical fiber (Related product: singlemode simplex fiber) is designed to a mode for transmission. Cut off wavelength is also a unique parameter of single mode fiber. There are two points we should know that normal cable and installation condition all reduce the cut off wavelength. The cable wavelength is more important than fiber cut off wavelength.

fiber mode

As for the multimode fiber, why we do not talk about it? Well, because the cut off wavelength is the wavelength below which multimode transmission. (Related product: multimode fiber patch cable). The fiber mode transmission acts as the figure. Thus, we also can see that cut off is also the feature of singlemode fiber, it is an unique characteristic for singlemode fiber. Thus it is clear that cut-off wavelength determines the fate of single mode transmission. ITU-T recommend that the cut off wavelength less than 1260nm or 1260nm for singlemode fibers. It means that the wavelength that below 1260nm is an acceptable single mode. We know that the 1310nm and 1550nm wavelength are used widely and with the introduction of DWDM and shifted fiber, 1260nm wavelength is not more acceptable than 1310nm. It means that singlemode fiber will allow a wavelength mode over 1261nm. Cut off wavelength is important for singlemode fiber, because it is the standards of condition and singlemode fiber to allow single mode transmission. Warm tips: Fiberstore is a famous fiber optic patch cords supplier. If you want to get related singlemode and multimode fiber cable, you can get them from here easily.

PVC/LSZH multimode fiber patch Cable

The best source on the Internet for cabling and connectivity products: multimode fiber optic cable, custom cable assembly, fiber optic patch cable, fiber optic cable.
Multimode, Plenum, connector Type, LC, MTRJ, SC, ST, features. Multimode, plenum, singlemode fiber, fiber Type 50/125 10 gig 9/125, length (In Meters) 1 M 2 M 3 M 4 M 5 M 6 M 7 M 9 M 10 M 15 M 20 M 30 M, page Date AM, fiber Optic Cable, Plenum, Multimode, 50/125, Duplex.

In Stock FO foot (30m) multimode duplex LC/ST 62.5 fiber cable – 3mm jacket 37.00 Qty. In Stock Back to Top Fiber Optic Cables – ST/ST Connectors Part No. Description CDN FO foot (1m) multimode duplex ST/ST 62.5 fiber cable – 3mm jacket 9.60 Qty. In Stock FO foot (2m) multimode duplex ST/ST 62.5 fiber.

Multimode Fiber Optic Patch Cords – 1m 2m 3m 5m 10m 15m

Fiber optic Patch Cable Multimode and Single Mode various size cable assemblies for fiber optic patch cord connection. Connect fiber optic panels and networks.
Fiber Optic Patch Cable ST to ST 10 Meter MultiMode (OM1) Duplex 2.0mm ofnr PVC Non-Plenum Jacket. PF-1353lclc-50-10M, fiber Optic Patch Cable 10 Meter LC-LC 50/125u MuliMode ofnr PVC- PepX pxid-1353. Fiber Optic Patch Cable LC to LC 10 Meter MultiMode 50/125 (OM3) Duplex Patch Cable 2.0mm ofnr PVC Non-Plenum Jacket. PF-1319lclc-15M, fiber Optic Patch.
In Stock FO foot (30m) multimode duplex LC/LC 62.5 fiber cable – 3mm jacket 39.70 Qty. In Stock FO foot (40m) multimode duplex LC/LC 62.5 fiber cable – 3mm jacket 48.10 Qty. In Stock FO foot (50m) multimode duplex LC/LC 62.5 fiber cable – 3mm jacket 56.50 Qty. In Stock Back to Top Fiber Optic.

Where can I buy LC LC Fiber Cable —— Fiberstore

LC-LC fiber patch cable information:

LC part of the fiber optic cable is the compact small form factor LC connector. It feature the RJ-45 style interface with low insertion loss and low back reflection, it is with high precision alignment and is widely used all over the world. We supply both simplex LC cable and duplex LC cable. The connector is with a 1.25mm O.D zirconia ceramic ferrule; LC fiber cable can be 9/125 single mode or 50/125 multimode or 62.5/125 multimode, PC, UPC or APC end face. It is compliant to Telcordia, EIA/TIA and IEC standards.
Fiberstore LC LC fiber cable are made and custom to order worldwide and are fully tested to guarantee top performance. Each assembly is serialized for easy idenfication ans sealed in individual Ziploc bags. Test results are included in each order. They are constructed with high quality fiber glass abd high grade connectors with ceramic ferrules for increased durability and accuracy.

Options:

Simplex, duplex or multi fiber assemblies
Jacket types: Riser, PVC, Plenum rated, or LSZH (Low Smoke Zero Halogens) and are all RoHS cables available
Custom fiber optic cable lengths and jacket colors
Various fiber types and wavelengths, typical 9/125 single mode, 50/125 multimode and 62.5/125 multimode
0.9mm / 1.8mm / 2.0mm / 3.0mm outer diameter fiber optic cables
PC, UPC, and APC polish types.

Catalogs:

LC-LC Single Mode 9/125 Fiber Cable
LC-LC Multimode OM2 50/125 Fiber Cable
LC-LC Multimode OM1 62.5/125 Fiber Cable
LC-LC Multimode 50, 10Gb OM3 Fiber Cable
LC-LC Multimode 50, 10Gb OM4 Fiber Cable

You can buy single mode fiber cables, single-mode LC-LC on Fiberstore. You can get a lowest price for a larger order.

About Fiberstore

Fiberstore designs, manufactures, and sells a broad portfolio of optical communication products, including passive optical network, or PON, subsystems, optical transceivers used in the enterprise, access, and metropolitan segments of the market, as well as other optical components, modules, and subsystems. In particular, Fiberstore products include optical subsystems used in fiber-to-the-premise, or FTTP, deployments which many telecommunication service providers are using to deliver video, voice, and data services.

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.

Company Name and Address in Hong Kong – Fiberstore Co Limited, Room 1202, 12 Floor Tung Chun Commercial Centre, 438 – 444, Shanghai Street, Hong Kong.
Company Name and Address in UK – Fiberstore (UK) Co Limited , Third Floor 207 Regent Street London W1B 3HH. (Home Page: http://www.fs.com)

Talking about the Differences between ST, SC, FC, LC Fiber Connectors

ST, SC, FC fiber optic connector is a standard form of the early different companies to develop, they use the same effect but each connector has advantages and disadvantages.

ST, SC connector commonly used in general networks. There after ST head into the rotation half a bayonet fixed, the disadvantage is easily broken; SC connector directly plug, and it is very easy to use, the disadvantage is easy to fall out; FC connectors general telecommunication network using, there is a nut screwed onto the adapter, the advantages is a solid, anti-dust, the disadvantage is slightly longer installation time.

MTRJ fiber optic patch consists of two high-precision plastic molded connectors and cable components. Connector for precision plastic parts exterior parts, including push-pull plug clamping mechanism. Applicable to telecommunications and data networking systems for indoor applications fiber optic connectors, fiber optic connectors is access optical modules, but also have a good variety, and is not interoperable with each other. Fiber than regular contact with people may mistakenly think GBIC and SFP fiber optic connector module is the same, they do not. SFP LC fiber optic connector module connection, and then the GBIC SC fiber optic connector.

FC fiber connector: External strengthen way is to use a metal sleeve, fastening means for the turnbuckle. Generally adopt ODF side (on the patch panel with a maximum).
SC fiber optic connector: connector GBIC optical modules, its rectangular casing, fastening means is a latch pin plug type uses, do not need to rotate. (With a maximum switch on the router) .
ST fiber optic connectors: commonly used in fiber optic patch panels, rounded shell, fastening means for the turnbuckle. (For 10Base-F connector, the connector is usually ST type commonly used in fiber optic patch panel).
LC type optical fiber connector: connector SFP module, which uses a modular jack made easy operation (RJ) latch mechanism. (Routers used).
MT-RJ: transceiver square fiber optic connectors, one pair of fiber transceiver.

Fiber optic connector according to the different transmission media can be divided into common silicon-based single-mode fiber, multimode connectors, as well as other issues such as the transmission medium in plastic optical fiber connector; according to the form of connection head structure can be divided into: FC , SC, ST, LC, D4, DIN, MU, MT, etc. in various forms. Which, ST connector is commonly used wiring device side, such as fiber optic patch panels, fiber optic module; while SC and MT connectors are typically used for network equipment side. There are several common multimode optical fiber cable always apply in fiber optic telecommunications and high speed transmission systems, such as st-st 62.5/125 , LC to ST 62.5 multi mode, 62.5/125 multimode fiber lc-sc, SC to SC 62.5 multi mode fiber ect.

              LC-ST          SC-LC

Then let’s have an introduction of various types of optical interface Fiber optic connectors,FC Round threaded (on the patch panel with maximum), ST Snap-round, SC Snap-square (with a switch on the router maximum), PC Micro-spherical polishing, APC was 8 degrees and do micro-spherical polishing, MT-RJ square, one pair of fiber transceiver (Huawei 8850 on helpful). So we need to choose when we choose to optical fiber connection is suitable for interface.

Now I work in a fiber optic shop, if you need the fiber optic cable related products, you can directly online search the website: www.fs.com

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