Home
  Licensees
• Standard
• Adapter
• Transceiver
• Unibody
  News Room
  LC Interface
• LC Advantages
• Brochure
• LC FAQ
• Technical Papers
• LC Dimensions
Infant Cleveland Browns '47 Brown Little Monster Knit Beanie,Men's Chicago Bears Super Bowl Champion Commemorative Slide Slippers Cheap Dallas Cowboys Jerseys For Sale.Women's Houston Texans Nike Gray Rally Open Hem Rewind Sweatpants,Men's Arizona Cardinals Majestic Black Big & Tall Shed Blockers Heather Long Sleeve T-Shirt,Men's Tennessee Titans Marcus Mariota Majestic Navy Big & Tall Eligible Receiver Name and Number T-Shirt Cheap Dallas Cowboys Jerseys For Sale.Men's Chicago Bears Jay Cutler Nike White Limited Jersey,Men's Los Angeles Rams New Era Navy/Heather Gray Classic Cover Cuffed Knit Hat http://www.cowboysjerseysedge.com.Men's NFL Nike Black Legend Logo Long Sleeve Performance T-Shirt,Green Bay Packers Big Logo Sweater Pig Bank,Houston Texans Art-Glass Table Lamp.Men's Minnesota Vikings Everson Griffen Nike Purple Game Jersey,Pittsburgh Steelers Chevron Drawstring Backpack,'47 Brand San Francisco 49ers Big Sizes Cleanup Adjustable Hat - Scarlet Cheap Dallas Cowboys Jerseys For Sale.Tennessee Titans 27'' x 37'' Vertical Banner Flag - Light Blue,Men's San Francisco 49ers Majestic Black Up And Over Long Sleeve T-Shirt,Mens Buffalo Bills CJ Spiller Nike White Game Jersey.Women's Buffalo Bills Andre Reed Pro Line Royal 1990 Retired Player Jersey,Girls Youth New York Jets Pink Neon Logo T-Shirt http://www.cowboysjerseysedge.com.Majestic Richard Sherman Seattle Seahawks Women's College Navy Plus Size Fair Catch Name & Number T-Shirt,Women's Detroit Lions Cream Hail Mary 3/4 Sleeve T-Shirt,Infant San Diego Chargers Navy Blue Fan-Atic Creeper, Bib and Bootie Set
1.   What is the LC Interface?
2.   What Advantages Does the LC Interface Bring to Equipment Designers?
3.   What Advantages Does the LC Interface Bring to Premises Cabling Applications?
4.   Is the LC Widely Supported?
5.   Why Does the LC Alliance™ Believe the LC Interface Is the Best SFF Interface?
6.   Is the LC field mountable?
7.   Is the LC Available for Both Single-Mode and Multimode?
8.   What is a BTW connector?
9.   Can the LC connector be tuned?
10.   What About LC-based Electronics?
11.   If SFF Parts Are Interchangeable, What's the Advantage of LC Transceivers?
12.   Does the LC meet the Telcordia requirements?
13.   What standards does the LC connector meet?
14.   Is the LC Interface Specified in the TIA/EIA-568B Standard for Premises Cabling Systems?
15.   What is the LC Alliance™?
What is the LC Interface?

 

The LC interface is fiberoptic connector interface based on a 1.25-mm ceramic ferrule and the familiar latching mechanism of the RJ-45 modular plug and jack.

The LC connector is a small-form-factor connector, offering a port density equivalent to the density allowed by modular jacks.

What Advantages Does the LC Interface Bring to Equipment Designers?

 

The LC interface allows designers to achieve the same port density that can be achieved with discrete copper modular plugs and jacks. This density is about twice the density achievable with the SC connector. This higher density lets designers offer a choice of copper or fiber in the same form factor. For example, a plug-in board for a network switch can contain 24 copper ports or 24 duplex LC ports in the same space. With an SC interface, only 12 duplex ports can be achieved.

What Advantages Does the LC Interface Bring to Premises Cabling Applications?

 

The higher density allowed by the LC saves space in patch panels and communications outlets. In addition, the familiar RJ-style latching means that users will be comfortable with the LC, since its operation is the same as a modular plug and jack.

Is the LC Widely Supported?

 

Yes. The members of the LC Alliance™ offer transceivers, connectors, cable assemblies, and companion hardware (such as patch panels and wall outlets). The list of companies who have licensed the LC interface or who either offer or have announced their intention to offer LC products in switches, routers, media converters, and other equipment is growing.

To date, over 40,000,000 LC connectors are in field use, making it the most widely used SFF connector in the world.

Why Does the LC Alliance™ Believe the LC Interface Is the Best SFF Interface?

 

The LC connector was designed as a high-performance connector right from the start, with the goal of providing exceptional single-mode and multimode operation. Based on proven ceramic-ferrule technology, the LC offers the lowest insertion loss among SFF connectors at 0.1 dB average, The connectors also offer a low standard deviation meaning that performance is more consistant, with less variation. Other SFF connectors were designed as multimode connectors, with attempts to make single-mode versions following later.

Low insertion loss is becoming even more critical as new applications like Gigabit Ethernet have much smaller link margins. Low insertion loss can allow more connections in the channel. For most SFF connectors, no more than two interconnections-one at the equipment patch panel and one at the communications outlet-are recommended. The additional power margin offered by the LC connectors makes it practical to have six interconnections in the path, which means more flexibility in premises cabling.

Is the LC field mountable?

 

Yes, the multimode and single-mode connector is designed for easy field mountable. Easy to mount, easy to polish, easy to tune

Is the LC Available for Both Single-Mode and Multimode?   Yes, the LC is available in single mode, multimode, and APC versions in both simplex and duplex configurations.
What is a BTW connector?   A BTW connector is a shorter version of the LC intended for mounting on 900 um fiber. It is typically used on the back side of equipment.

Can the LC connector be tuned?

 

Yes, this allows you to get the maximum insertion loss by aligning the ferrule in six possible positions.

What About LC-based Electronics?

 

ExceLight, Agere Systems, Luminent, and Stratos Lightwave all offer LC-based transceivers, covering a range from 10 Mb/s to 2.5 Gb/s. No other SFF-based transceiver at this time has the broad range of application support in shipping products. The wider fiber pitch of LC transceivers also eliminates the need for supplemental waveguide technology or other high-speed noise-control mechanisms.

Equally important, LC-based transceivers meet the requirements of multisource agreements (MSA) for both through-hole and pluggable versions. The MSA establishes common footprints and pinouts for transceivers, regardless of the connector interface. Designers can interchange SFF transceivers from different vendors without redesigning your board. Not only can you source LC-based transceivers from different vendors, but you can also replace an MT-RJ transceiver or other transceiver meeting MSA mechanical dimensions with an LC transceiver.

If SFF Parts Are Interchangeable, What's the Advantage of LC Transceivers?

 

First, the LC is supported by a wider range of transceiver manufacturers. This means greater competition, more selection, and more innovation.

Second, the LC transceiver has proved more amenable to gigabit-speed designs. The wider fiber pitch of the LC design simplifies the design by requiring less complexity internally to avoid noise. With closely spaced fibers, internal mirrors, waveguides, or other light-directing mechanisms are required to direct the light from the optical port to the source or detector. These mechanisms complicate design and result in up to a 2-dB penalty in output power. This penalty means that LC transceivers can operate at a lower drive current to deliver the same power levels as competing transceivers.

Third, as stated above, the LC is available in the widest range of speeds, optical wavelengths, and source types to support the widest range of applications. Gigabit LC transceivers are shipping today from several vendors.

Does the LC meet the Telcordia requirements?

 

Yes, the LC will meet Telcordia SFF requirements as defined in GR-326-CORE.

What standards does the LC connector meet?

  The LC connector is accepted as 1394B S800 Standard (Home & Commercial Video)
TIA Adopted a standard BTW
ATM Adopted a standard for Gigabit
IEC 86B WG6
IEEE802
InfiniBand Trade Association (Agilent, Nortel, etc.)

Is the LC Interface Specified in the TIA/EIA-568B Standard for Premises Cabling Systems?

 

The standard does not specify a particular type of connector. Rather, any connector that meets specified optical, mechanical, and environmental characteristics can be used in 568-compliant system.

The LC meets the proposed requirements.

What is the LC Alliance™?

 

The LC Alliance™ is a group of companies who have joined together to promote the LC interface as the best small-form-factor fiberoptic interface. Members include Agere Systems, Avaya Communication, ExceLight Communications, OFS, Luminent, and Stratos Lightwave.

 
         Home  |   Licensees  |  News Room  |   LC Interface
  Contact Edward V. Charbonneau of OFS:   Phone: +1-770-798-2571
      Email: echarbonneau@ofsoptics.com
  Our Webmaster:     dpramsey@ofsoptics.com