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An Introduction to Large Core Optical Fibers

Posted by George Zhu on Thu, Sep 28, 2017 @ 10:09 AM

The most common multimode optical fibers, which allow multiple light modes to propogate along the link simultaneously, are designed with a core diameter size of 50µm for for high-speed communications networks.  You may recognize these types of fibers by industry specifications such as OM2, OM3, and OM4 or by brand names like Corning® ClearCurve® and OFS® LaserWave®.

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Topics: optical fibers, large core fibers, multimode optical fibers, medical fibers, high power lasers, specialty optical fibers

How Does a Dispersion Compensating Fiber Reduce Chromatic Dispersion?

Posted by George Zhu on Thu, Apr 27, 2017 @ 16:04 PM

An important factor in the performance of fiber optic communications systems, chromatic dispersion is a topic and performance characteristic that is important to both understand and account for when operating and/or designing equipment for fiber-based networks.

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Topics: chromatic dispersion, dispersion compensating fiber, optical fiber, refractive index, dispersion compensating module

Buying Optical Fiber for Network Testing and Latency Applications

Posted by Kevin Miller on Fri, Mar 31, 2017 @ 15:03 PM

When the time comes to buy spools of optical fiber for testing and demonstrating communications systems, there are a few items to consider that will help ensure you end up with an ideal setup.  Since it has been proven that following a few best practices will help you get the most out of your fiber, thinking about these four important items in advance will allow you to further qualify your needs as well as speed up the purchasing process.

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Topics: fiber network simulation, fiber latency, optical time delay, network simulation, optical fiber, fiber spools, buy optical fiber

What Is Optical Fiber?

Posted by Tiffany San Souci on Thu, Jun 9, 2016 @ 09:06 AM

Optical fiber is made by drawing glass or plastic to a desired length and diameter (slightly larger than a human hair).  This flexible and highly pure fiber is most commonly used to transmit light for a wide range of applications including visible light displays, sensors, and high-speed communications networks which we will discuss in this article.

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Topics: optical fiber, optical fibers, single mode optical fiber, multimode optical fiber

History of Optical Fiber

Posted by Tiffany San Souci on Mon, Jun 6, 2016 @ 09:06 AM

The first instances of glass being drawn into fibers date back to the Roman times, however it was not until the 1790’s that a pair of French brothers named Chappe, invented the first “optical telegraph”. This primitive system was made up of towers outfitted with a series of lights that operators could use to relay messages back and forth.

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Topics: fiber optic

What Does Your Optical Fiber Test & Demonstration Setup Say About You?

Posted by Kevin Miller on Thu, May 12, 2016 @ 09:05 AM

Often not considered, it is important to remember that looks really do matter!

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Topics: optical fiber, fiber spools, fiber latency, fiber network simulation, fiber test, buy optical fiber

Protecting the Integrity of Municipal Fiber Optic Networks

Posted by Kevin Miller on Mon, May 2, 2016 @ 10:05 AM

In order to meet the growing needs of the local community, many municipalities have chosen to make significant investments to both deploy and maintain their own fiber optic networks for communications relating to a number of important areas:

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Topics: remote fiber test system, fiber monitoring system, fiber monitoring, fiber optic intrusion detection, municipal fiber optic network, emergency service monitoring

WANem As A Delay Simulator

Posted by Tiffany San Souci on Tue, Apr 26, 2016 @ 09:04 AM

Wide Area Network Emulators, or WANem, are designed to simulate WAN connections for use in laboratory settings, and makes for a good delay simulator as well.

By calculating the interactions between different network entities, WAN emulation creates artificial delay, bandwidth constraints and other impediments and functions.

This functions as a way to gauge applications and protocols against actual conditions. WAN characteristics like packet loss, disconnections, jitter, and time delay can be mimicked over a transparent application gateway with a WANem. This unique test condition allows users to bring the internet into their development, laboratory or test environment.

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The Positive Impact of Using Optical Fibers on Cell Towers

Posted by Jonathan Tuck on Wed, Sep 2, 2015 @ 14:09 PM

While fiber optic technology has been utilized for many years in the communications industry, consumers generally identify with the role that it plays in wired communications such as Cable TV, Fiber-To-The-Home, and the related networking equipment.  However, what most overlook or do not realize is the significant impact that deploying optical fibers has also had on something consumers use every day – mobile devices.  In order to achieve the high speed data levels that we have become accustomed to when using mobile devices, cell towers and their supporting networks had to be retrofitted with optical fiber cables.

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Topics: fiber cable, optical fiber, cell towers

Upgrading to 40/100 Gigabit Ethernet? Consider the Implications on your Multimode Fiber Infrastructure

Posted by OJ Johnston on Mon, May 11, 2015 @ 17:05 PM

While many enterprises are considering the move to a 40/100G ethernet infrastructure, often they overlook the impact of remaining with a multimode fiber infrastructure. While there is little difference in the infrastructure requirements of 10G ethernet for single-mode fiber and multimode fiber infrastructures, there is an exponential difference in 40/100G ethernet infrastructures. Many people tout the economics of MMF vs SMF lasers as the key reason for remaining with their MMF infrastructure; however, the savings achieved there will likely be erased by the increased cost of the passive optical infrastructure.

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Topics: network monitoring, single mode optical fiber, multimode optical fiber, 100G, optical taps, network taps, 40G, gigabit ethernet