Tag Archives: OM3

Secure Fiber Optic Link With Keyed LC Connectivity Products

The fiber optic demand is keeping increasing, which also increases the risks of unauthorized or inadvertent data changes. Various complicate software tools are being invented to secure the data links. Actually, these risks can be effectively reduced by using proper cabling hardware component. Keyed LC (also known as secure LC) connectivity products are suggested. How could keyed LC solve the problems that only complicate software tools can do? How to use them in the fiber optic network? This post will offer you the related details.

Understand Keyed LC Connectivity Products

The biggest characteristic of keyed LC connectivity products is their various colors. And behind these different colors are different keying features. Each color represents one unique pattern, which ensures that only the same-colored products can be connected to support the data link.

keyed LC connector and adapter

For example, the above picture shows the interfaces of a keyed LC connector and adapter which have yellow color and a unique keying pattern to ensure that they only fit each other. It is clearly showed that the inside structures of the yellow adapter and connector are different from the standard ones and are not compatible with the standards ones. All the other yellow-color LC products including LC patch cable, LC adapter panel and LC cassette has the same keying feature. In a keyed LC connectivity system, connections can be identified directly by their colors. If the color does not match, the keying feature will prevent the connector from carrying the signal.

color code of keyed LC products

Full Series Keyed LC Connectivity Products

Some vendor can provide up to 6, 8 or 10 different colored keyed LC connectivity products. In FS.COM, the keyed LC connectivity products are available in 12 different colors. The above picture shows the 12 different keying features that are identified by colors.

The keyed LC connectivity might be needed in any point of the fiber optic network. To satisfy these requirements and increase the cabling flexibility, a full series of keyed LC connectivity products are introduced in FS.COM, including keyed LC connector, keyed LC adapter, keyed LC patch cable, keyed LC adapter panel, keyed LC fiber optic cassette. And rack unit are also available for better network management. All of these products are available for single-mode (OS2) and multimode (OM1, OM2, OM3, OM4) applications. Please note different providers might have different keying pattern, even their keyed LC products are in the same color.

keyed LC connection guide

How to Use Keyed LC Connectivity Product in Fiber Optic Network

The using of keyed LC connectivity products is not much different from the standard ones. However, they are much more easier for identification and management because of their color-identification system. The above picture shows a typical fiber optic link that is commonly deployed in today’s fiber optic network from data center switch to the target devices. The required keyed LC connectivity products are listed in the following table.

Keyed LC Cabling Products Description
Keyed LC Connector 12 different colors; available in simple/duplex, APC/UPC polishing style
Keyed LC Adapter 12 different colors; available in simple/duplex, APC/UPC polishing style
Keyed LC Patch Cords 12 different colors; available fiber types are OS2, OM1, OM2,OM3,OM4
Keyed LC Adapter Panel 12 different colors; available in simple/duplex, APC/UPC polishing style, 6/8/12 ports
Keyed LC Cassette 12 different colors; available in simple/duplex, APC/UPC polishing style,
available fiber types are OS2, OM1, OM2,OM3,OM4

OM1, OM2, OM3, OM4: Standardization of Multi-mode Fiber Optic Cables

Standardization in fiber optic industry is one of the most confusing areas for people who involved in the business. “OM” terminology in fiber optic technology is new to both users and fiber optic manufacturers. The letters “OM” stand for optical multi-mode, which is marked multi-mode optical fiber specifications. There are four standards in fiber optic terminology: OM1, OM2, OM3, OM4. This post is going to illustrate what they are.

According to ISO 11801 standard, multi-mode fiber cables are described using a system of classification determined by OM1, OM2, and OM3. OM4 is a laser-optimized, high bandwidth 50µm multi-mode fiber. In August of 2009, TIA/EIA approved and released 492AAAD, which defines the performance criteria for this grade of optical fiber. While they developed the original “OM” designations, IEC has not yet released an approved equivalent standard that will eventually be documented as fiber type A1a.3 in IEC 60793-2-10.

OM1 cable typically comes with an orange jacket and has a core size of 62.5 micrometers (µm). It can support 10 Gigabit Ethernet at lengths up 33 meters. It is most commonly used for 100 Megabit Ethernet applications.

OM2 also has a suggested jacket color of orange. Its core size is 50µm instead of 62.5µm. It supports 10 Gigabit Ethernet at lengths up to 82 meters but is more commonly used for 1 Gigabit Ethernet applications.

OM3 has a suggested jacket color of aqua. Like OM2, its core size is 50µm, but the cable is optimized for laser based equipment that uses fewer modes of light. As a result of this optimization, it is capable of running 10 Gigabit Ethernet at lengths up to 300 meters. Since its inception, production techniques have improved the overall capabilities of OM3 to enable its use with 40 Gigabit and 100 Gigabit Ethernet up to 100 meters. 10 Gigabit Ethernet is its most common use.

OM4 also has a suggested jacket color of aqua. It is a further improvement to OM3. It uses a 50µm core but supports 10 Gigabit Ethernet at lengths up 550 meters and it supports 100 Gigabit Ethernet at lengths up to 150 meters.

OM 1234

Higher bandwidth requirements have accelerated 40 and 100 Gb/s applications. OM4 effectively provides an additional layer of performance that supports these applications at longer distances, thereby limiting the number of installations truly require OS2 single-mode fiber. OM4 can provide a minimum reach of 125m over multi-mode fiber within the 40 and 100 GbE standards.

Standardization of OM used not only for fiber optic cables but also fiber patch cables. Multi-mode 50 125 duplex fiber patch cable LC-LC provides 10 gigabit data transfer speeds in high bandwidth applications via 50/125µm laser-optimized OM4 fiber. They are 5 times faster than standard 50um fiber cable and work with both VCSEL laser and LED sources.