When we talk about the most widely used fiber optic connectors, we must bear in mind that their use in building, office and home installations, internal or external plant applications, cable television and telephone systems to connect cables and equipment where it is necessary to have the ability to connect and disconnect.According to Beyondtech, connectors are considered the weakest link in a fiber optic system, because they mark a point where signal loss can occur.Therefore, for fiber optic cables to perform exceptionally well, well-designed connectors, good terminations, and a skilled installer are required.There are different types of connectors, but they are all made up of these three mechanisms:Ferrule polishingThe polishing of the ferrule determines the return loss of a fiber optic cable.Return loss is the amount of energy lost that occurs when light is returned from the fiber to the light source due to the discontinuity or gap between one ferrule and the other.It is measured in decibels.Ferrules are polished in different ways, which classifies the connectors as:Since the beginnings of fiber optic technology, terminating a fiber means attaching it to a connector with an adhesive, polishing the ferrule, and waiting for the adhesive to dry overnight, a process that is considered difficult to perform if you need to do a fiber optic installation. field emergency.Fortunately, various methods have been developed over the years to simplify this process, from fast-drying adhesives, connectors that need to be placed in an oven to melt the adhesive, and pre-polished connectors that do not require any adhesive.Singlemode and multimode connectorsFiber optic connectors can also be categorized as single mode and multimode and there are a few differences between them.For starters, singlemode connectors are blue, while multimode connectors are beige and APC connectors are green.Then, the size: single mode connectors have openings of 126 microns and multimode 127 to 128 microns.And the biggest difference: single-mode connectors have a higher price, which is accompanied by better data transmission.They provide little distortion and attenuation compared to multimode.Hundreds of types of fiber optic connectors have been developed by telecommunication companies over the years, but not all of them have become very popular in the market.The connectors that prevailed meet the TIA Fiber Optic Connector Intermateability Standards (FOCIS), the specifications that manufacturers need to follow to ensure that their connectors are capable of interfacing with those of other manufacturers.The SC was created in the mid-1980s by the telecommunications company Nippon Telegraph and Telephone, but was not widely used in its early days as it was considered too expensive.SC connectors have an average insertion loss of 0.25dB and are rated to withstand 1000 cycles of connection and disconnection.SCs align fibers precisely due to their ceramic ferrules, which work on a push and pull system.They were initially used in Gigabit Ethernet systems, but were replaced by smaller connectors.They are currently used in monomode and multimode versions in cable TV and telephone systems.The LC, also known as Little Connector, was created by Lucent Technologies and is widely used in single-mode applications as it has excellent performance and can be easily terminated.LC connectors have 1.25mm ferrules that use a push and pull mechanism.They have a typical insertion loss of 0.10dB.The small size of LC connectors reduces the need for space by 50% in contrast to SC and ST connectors, therefore, they are used in high-density systems such as panels and racks, Fiber to the House, distribution in buildings, Networks of Local Area, data processing networks and cable TV systems.They can be used with single mode and multimode cables.The ST was created by AT&T and is still one of those used in network systems.ST connectors have an insertion loss of 0.25dB and support the fiber with a 2.5mm ferrule that is held in place with a bayonet locking system.ST connectors are used in long and short distance applications such as campus or corporate networks and in military applications.It can be easily connected and disconnected due to its flexibility and is rated to withstand up to 500 cycles.Designed by Nippon Telegraph and Telephone, the FC is a connector with a 2.5mm ceramic ferrule that is held in place with a screw thread system.FC connectors are available for multimode and single-mode fiber, but are mostly used in single-mode applications and high-speed networks.Its main use is in high vibration environments due to its thread system.It has an insertion loss of 0.3dB.The MTRJ is a duplex connector, which means that it supports two fibers at the same time.Its body and ferrules are made of polymer and it has female and male versions.They are mostly used with multimode fiber.It is a multi-fiber connector that can hold 12 to 24 fibers in a single rectangular ferrule.MPOs are used to build 40G and 100G parallel transmission Ethernet networks.They are available in UPC and APC versions.Male MPO connector ferrules have two pins, while female connectors have two holes.Insertion loss is 0.25dB.Read more on Fiber Optic Connectors Color CodeIt's funny, the other day I saw in Hannover some fiber connectors called jiky zand don't you have a little information about them?I can't find anything on the internet.I don't see E2000 connectors mentionedWell, let's see what the author answers.thanks for the comment.Thank you very much for this information as I was looking for the loss of the FO connectorsThank you very much this is very good informationExcellent and very complete information.wow cracks I congratulate you for your effort and work keep it up thanks for everythingThank you very much, these types of comments encourage us a lot to continue.assisigood afternoon there is a connector sc to rj45 thanksIt seems to me that what you are looking for is a media converter, look at https://www.fibraopticahoy.com/?s=convertersit can be functional or compatible sc and st connectors on the same line and the device does not workSave my name, email, and website in this browser the next time I comment.This site uses Akismet to reduce spam.Learn how your comment data is processed.Now you can use our free SERVICE to quickly contact companies that rent splicers, certifiers, OTDRs, cutters... 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