Fiber Connector Types – The Ultimate Guide

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MELONTEL: Excellent Manufacturer Of Fiber Optic Connector Products

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Professional Fiber Connector Manufacturer


High-quality fiber connector types  products are always welcomed. MELONTEL always believes that creating value for customers will be the foundation of the company.

Fiber optics has been an integral part of many people’s daily lives in this pandemic. It is important to know the different fiber connector types so that you can learn what is best for your needs. Continue reading to learn more.


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Chapter1: What are the different types of fiber connectors?

FAST Connectors Fiber Optic

There are a lot of different types of fiber connectors existing today. The variety exists for different purposes. For example, fiber connectors are used for Local Area Networks for the Internet, digital telephone services, and public utility networks.

Learn more about the SC fiber connector.

Single mode fiber connector

Single-mode fiber connector types have an apparent difference from multi-mode connectors. Single-mode connectors only enable one type of light to pass through at a single time. Their differences usually fall on one or two things. They lie in fiber core diameter, wavelength & light source, bandwidth, color sheath, cost, and distance.

Core Diameter

For single-mode, the core diameter is naturally smaller than multi-modes. Multi-mode connectors usually size up about 50 micrometers(µm) to 62.5 micrometers(µm). It typically has a smaller diameter because it lets less light pass through than multi-mode ones. 


The connectors have different polish end faces for the reason of having a variety of return losses on the connectors. Single-mode connectors usually have an Angled Polished Connector (APC) or an Ultra Physical Contact (UPC) one. Commonly, UPC connectors have a slightly domed end, while the APC has a slightly angled end face. 


According to the fiber connector types chart, the multi-mode connectors have less distance than single-mode ones. Basically, the chart describes single-mode connectors as having a long distance but at the cost of slower speeds. On the other hand, multi-mode connectors are shorter in comparison, but they have better data rates. 


If talking about longer distances, the single-mode trumps multi-mode connectors for a number of reasons:

  • Fewer routers and switches are needed mid-span of the two stations
  • Bandwidth is virtually unlimited
  • Capable of transferring  40Gb of data across hundreds of kilometers with little loss of data
  • It is capable of transferring at the speeds of 10Gb of data per second if the distance is around thousands of kilometers
  • Single-mode connectors are generally less expensive


The number of positives that single-mode connectors bring has several disadvantages as well. These include:

  • High maintenance because laser-based equipment makes more heat when operated
  • These lasers are not cheap and can only be used one at a time
  • Being dependent on lasers, single-mode connectors are usually less versatile

Multi-fiber connector

Multi-fiber connector types are generally better for shorter data deliveries but at larger sizes. They have advantages over single-mode connectors in the area of short-distance data transfers.

Core Diameter

Multi-mode fiber center diameters are 50 µm and 62.5 µm regularly, allowing it to have higher “light assembling” capacity and work on associations. The conjoined breadth of single-mode and multimode fiber is 125 µm.


Generally, multi-mode and single-mode connectors have the same UPC and APC connectors. APC connectors include an 8-degree point at the end face. Generally, APC connectors are utilized by specialist co-ops or for extremely significant distance transmission. For ID, APC connectors are hued green.

Because of the APC connector’s point, it won’t be able to connect to a UPC connector. They are not exchangeable, so it is vital to check whether your establishment requires UPC or APC connectors.


The fiber connector types chart shows that solitary mode fiber distance is significantly longer than that of multimode fiber links at the information rate from 1G to 10G. However, OM3/OM4/OM5 multimode fiber upholds a higher information rate.

Since multimode optical fiber has an enormous center size and supports more than one light mode, its fiber distance is restricted by modular scattering. This is a typical peculiarity in multimode step-record fiber. What’s more, OS2 single-mode fiber could uphold longer distances in 40G and 100G connections, which isn’t recorded in the table.

Chapter2: What is the advantage of Multi-fiber connector?

Multi-fiber connector

Multi-mode connectors have several advantages in short distanced data transfers, specifically:

Read more about : What is the Fiber Optic PLC Splitter?
  • They are less expensive to build, install, and take care of
  • They can carry huge amounts of data in short distances
  • Many optical modes can be transferred at once

Chapter3: What is the disadvantage of Multi-fiber connector?

Multi-mode connectors suffer greatly from distance and speed when transferring to long distances.

  • Multi-mode cables get rate limited when the data to be transferred is longer than 2 kilometers
  • The multimode cable’s maximum speed is 100G depending on the distance, and with speeds only up to a distance of around meters
Learn more about Fiber Optic Drop Cables

Chapter4: Are single-mode fiber connector types better than multi-mode ones?

multi-mode fiber connector types

Single-mode fiber connector types and multimode fiber connectors enjoy their own benefits in cost and applications. There is no such thing that solitary mode optical filaments are better compared to multimode ones. Simply picking the best-fit one for your applications is alright.

Chapter5: Can I use both single-mode and multi-mode fiber connector types?

If you followed the references and information above, you would not be able to mix the two connector types. Multi-mode fiber connector types differ from single-mode ones in the sense that their physical parts are not compatible with each other.

Keep on reading:Fiber Optic Connector.

Chapter6: What are the four fiber connector types?

Fiber connectors have multiple purposes, and as such, they have multiple types. Some of these Types of Fiber Connectors include: 

SC Fiber Optic Connector

SC Fiber Optic Connector

SC, likewise called a square connector, represents the endorser connector. It was created by Nippon Telegraph and Telephone. With the consistently expanding fame on the lookout, the assembling cost for SC went down. It has broadly applied in single-mode fiber-optic links, simple CATV, GPON, and GBIC.

The connector’s external square profile, along with its snap-coupling component, permits more prominent connector bundling thickness in instruments and fix boards.

LC Fiber Optic Connector

LC or Lucent Connector is a push-pull, little structure factor connector that utilizes a 1.25mm ferrule, a large portion of the size of the SC. Because of the blend of little size and hook included, LC is great for high-thickness associations, SFP and SFP+ handsets, and XFP handsets. 

FC Fiber Optic Connector

FC Fiber Optic Connector

FC is short for Ferrule Connector. It is around a strung fiber optic connector planned by Nippon Telephone and Telegraph in Japan. The FC connector is applied for single-mode optic fiber and polarization-keeping up with optic fiber. 

Be that as it may, FC is becoming more uncommon and, for the most part, supplanted by SC and LC as a result of its vibration releasing and insertion loss.

ST Fiber Optic Connector

ST Fiber Optic Connector1

ST is referring to Straight Tip. The ST connector was created by AT&T soon after the appearance of the FC. They might be confused with each other, yet ST utilizes a blade mount other than a screw string. 

You must ensure SC connectors are situated appropriately due to their spring-stacked structure. SC is basically utilized in multimode fiber optic links, grounds, and structures.


From the correlation between single-mode versus multimode fiber optic links, it can be inferred that the single-mode fiber cabling framework is appropriate for long-arrived information transmission applications and broadly conveyed in transporter organizations. 

Multimode fiber cabling framework has a more limited reach and is broadly conveyed in big business, server farms, and LANs. Clearly, the best fiber connector types for you are dependent on the purpose, and you have to research what you are going to use them for before settling on one.