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Using OMI to Benchmark CATV Systems

Posted by Kevin Miller on Wed, Oct 31, 2018 @ 12:10 PM

Benchmarking is the evaluation of a performance in contrast to a standard, typically based on best processes and organizations in your industry. Typically bench marking revolves around key factors which are cost, time and quality. When considering communications systems of fiber optics, bench marking refers to the quality of performance of the information that is delivered. It is also a tremendously noteworthy impact on cost as well as time.

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Topics: omi fiber, catv transmitter, catv system operator

Benefits of Using Fiber Optic Attenuators with Doped Fiber

Posted by John Kornegay on Thu, Oct 18, 2018 @ 12:10 PM

Fiber optic attenuators are used in networking applications where an optical signal is too strong and needs to be reduced. There are many applications where this arises, such as needing to equalize the channel strength in a multi-wavelength system or reducing the signal level to meet the input specifications of an optical receiver. In both scenarios, reducing the optical signal strength is necessary or else system performance issues may arise.

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Topics: wavelength filtering, fiber optic education, fiber optics

Understanding The Difference Between Single-mode and Multimode Fiber

Posted by John Kornegay on Tue, Sep 25, 2018 @ 09:09 AM

There are so many cable options available the one might wonder where to start. This article will set you on the right path in the decision process. Let’s begin by focusing on single mode and multimode fiber optic cables.

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

Four Benefits of Protecting Your Optical Fiber In A Test Environment

Posted by John Kornegay on Mon, Sep 10, 2018 @ 15:09 PM

If you are in the line of work where you are simulating networks using optical fiber, it is safe to assume that you have a few spools of bare fiber sitting in your test environment. The importance of ensuring your fiber-based network devices will work as envisioned before deployment in the field is vital. However, running simulations using unprotected or unsecured spools fiber can prevent you from producing the maximum results due to challenges that can arise.

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Topics: Network Optimization, data center simulation, fiber test, fiber optic test

Sources of Latency in a Financial Communications Network

Posted by John Kornegay on Tue, Aug 14, 2018 @ 10:08 AM

 

The world’s financial communication networks are a paradigm of the modern world, and they operate at very high speeds through necessity, often using fiber optic technology. So fine are the lines between success and failure in today’s trading environment that just tiny fractions of seconds do matter. When financial institutions trade via these networks, shaving microseconds off network latency can result in a significant competitive advantage and millions of dollars annually. To reduce latency, one must understand the factors that can cause latency.

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Topics: Financial Networks, Network Optimization, fiber latency

The Importance of Optical Detectors

Posted by George Zhu on Tue, Jul 24, 2018 @ 18:07 PM
In the previous article, I briefly explained and compared two types of optical sources used in transmitters: LED and LD. Today, I am going to discuss what happens at the other end of a fiber link -- detectors. Optical detectors, as the name implied, can detect the amount of light received. Our very own eyes are a pair of detectors as they can receive light information with the retina and transmit that light data to our brain. In the visible light spectrum, our eyes are great detectors to inspect fiber break or light leakage. However, most fiber works in the invisible wavelength spectrum where human eyes won't be able to see. That is the where the optical detectors come in .
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Topics: graded-index fiber,, optical detectors

Why Is Latency So Important In Financial Networks?

Posted by John Kornegay on Tue, Jul 10, 2018 @ 12:07 PM

When talking about computers, latency is a word used to describe how long after you input a command that the results of that command are displayed on the screen. In technical terms, it’s the measured delay involved getting a datagram or packet from one hardware location to another and so obviously, the lower the latency, the better performing the device or network is.

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Topics: Financial Networks, latency

15 Best Blogs to Follow About Network Optimization

Posted by John Kornegay on Wed, Mar 7, 2018 @ 15:03 PM

Network optimization is pretty challenging and requires effort and expertise. However, as they say, the bitter the challenge, the sweeter the reward. Before you dive into it, do the right amount of research. Once you get the hang of it, the results will amaze you and, well, others!

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Topics: network simulation, Network Optimization

Understanding Radiation Resistant Fiber: What you need to know

Posted by George Zhu on Thu, Jan 11, 2018 @ 16:01 PM

 Under the ideal environment condition, the primary fiber attenuation in single mode fiber comes from intrinsic characteristics of the glass and is usually less than 0.2 dB/km. However, when the fiber is exposed to high radiation environment for an extended period, for example in a nuclear facility, the fiber's Radiation-Induced Attenuation (RIA) will accumulate and become fiber's dominant source of loss as the electrons are trapped in the glass due to ionizing radiation. It also takes time for the fiber to recover from the radiation after the radiation source is removed. Depending on the temperature, radiation doses, and radiation sources, the fiber may or may not recover to its original state.

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Topics: multimode fiber, graded-index fiber,, step-index fiber,, corning clearcurve, om3 fiber, om4 fiber

Multimode Graded Index Fiber: What It Is And Why You Need To Know

Posted by George Zhu on Wed, Jan 3, 2018 @ 11:01 AM

Graded-Index Fiber, also known as G.651.1 under International Telecommunication Union (ITU) standards, is a type of fiber whose refractive index decreases gradually as the radial distance (distance to the core center) increases. In comparison, what we commonly have seen is G.652.D fiber which has a step-index refractive index profile. This article will compare graded-index multimode fiber with traditional step-index fiber, as well as its advantages when dealing with modal dispersion, a common signal distortion error.

The graph below shows the different refractive index profiles of the fiber core and cladding.

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Topics: multimode fiber, graded-index fiber,, step-index fiber,, corning clearcurve, om3 fiber, om4 fiber