Due to its excellent performance it dominated fiber optics for over a decade with only the ST competing with it. Thirty years on, it remains the second most common connector for polarization maintaining applications. The SC is ideally suited for datacoms and telecoms applications including point to point and passive optical networking. Considered by some to be the modern replacement of the SC connector, the introduction of LC connector was less successful, partly because of the initially high license fees from inventor Lucent Corporation.
As a push-pull connector also, the LC utilizes a latch as opposed to the SC locking tab and with a smaller ferrule it is known as a small form factor connector. With the introduction of LC compatible transceivers and active networking components, its steady growth in the FTTH arena is likely to continue. After having a basic understanding of both SC and LC connector, you may ask what are the differences and what do they mean to your implementation?
The table below gives an overview of strengths and weaknesses. They are generally used to connect to the equipment from a wall outlet, but the rest of the network will have ST or SC connectors.
Since they both use 2. FDDI - above - has a fixed shroud over the ferrules. ESCON - below - the shroud over the ferrules is spring-loaded and retracts. MT-RJ is a duplex connector with both fibers in a single polymer ferrule.
It uses pins for alignment and has male and female versions. MT-RJ, Volition and Opti-Jack below are difficult connectors to test, as most test sets do not allow direct adaptation to the connector. Usually the solution is to do a three cable Method C reference. It aligns fibers in a V-groove like a splice. Plug and jack versions, but field terminate jacks only. The Panduit Opti-Jack is a neat, rugged duplex connector cleverly designed aournd two ST-type ferrules in a package the size of a RJ It has male and female plug and jack versions.
Color Codes: Since the earliest days of fiber optics, orange, black or gray was multimode and yellow singlemode. However, the advent of metallic connectors like the FC and ST made color coding difficult, so colored boots were often used. Guide to Fiber Optic Connectors Check out the "spotters guide" below and you will see the most common fiber optic connectors.
SC SC is a snap-in connector also with a 2. FC FC was one of the most popular singlemode connectors for many years. To do so requires a hybrid mating adapter as shown here. LC LC is a small form factor connector that uses a 1. Military or Ruggedized Connectors There are many styles of ruggedized connectors, mostly developed for tactical military use but are now widely used in field applications that call for rugged cables and connectors, applications such as oil and gas exploration or use at sporting events by TV networks.
These connectors are generally multifiber connectors and some use expanded beam connector technology for its resistance to dirt and harsh environments. New Generation Connectors. Introduced Circa There were few new connectors introduced between and But there have been several new connectors that are designed for small size, making the duplex LC in the middle look quite large.
The SN on the right also is a duplex connector using 1. The salient feature of these connectors is panel or transceiver density. The CS is horizontal and has about twice the density of a LC. The vertical format SN doubles even the CD density in horizontal panel space and the mating adapter is hardly any higher.
Expanded beam connectors have fewer problems with alignment and dirt but their higher cost has limited their acceptance. These connectors are new and future commercial success is an unknown.
Obsolete Connectors. Deutsch Deutsch was probably the first commercially successful fiber optic connector. Volition 3M's Volition is a slick, inexpensive duplex connector that uses no ferrule at all.
And More Both LC and SC fibre connectors are designed for strong, interference-free data transmission. Choosing a connector type comes down to understanding how significant connection size is to your project. SC vs. The Basics: SC vs. SC is the most common fibre optic connector in use today and is typical for datacom and telecom applications.
LC connectors AKA: Lucent, Little, or Local connectors are designed as a push-pull connector that locks in place with a latch to secure the cable. At about half the size of SC connectors, LC is now the preferred choice for high-density connections.
On equipment without a lot of space, their size is a key advantage.
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