OTDR Launch Fibers - Importance and Usage

Posted by Kevin Miller on Tue, Nov 29, 2011 @ 14:11 PM

An Optical Time Domain Reflectometer (OTDR) is an optical measurement instrument designed to detect faults, splices and bends in optical fiber cables.  It functions by launching pulses of light into the optical fiber and measuring the back reflections created by the faults, splices, and bends.  It can identify the exact location of the fault by measuring the round trip time from the launch to the detection of the reflected returning pulse.  The time is determined by the speed of light in the glass core of the optical fiber.

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Topics: optical fiber, otdr, launch fiber, dead zone, launch box, otdr launch

Fiber Optic Splitters - Common Types

Posted by Kevin Miller on Wed, Sep 28, 2011 @ 10:09 AM

Fiber optic splitters enable a signal on an optical fiber to be distributed among two or more fibers.  Since splitters contain no electronics nor require power, they are an integral component and widely used in most fiber optic networks.  As a basic example, the diagram below shows how light in a single input fiber can split between four individual fibers (1x4):

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Topics: optical fiber, fiber optic splitters, fbt, fbt splitters, fused biconic tapered, plc splitter, plc splitters, planar lightwave circuit

Chromatic Dispersion in Optical Fibers

Posted by Kevin Miller on Wed, Aug 24, 2011 @ 12:08 PM

Chromatic dispersion is a phenomenon that is an important factor in fiber optic communications.  It is the result of the different colors, or wavelengths, in a light beam arriving at their destination at slightly different times.  The result is a spreading, or dispersion, of the on-off light pulses that convey digital information.  Special care must be taken to compensate for this dispersion so that the optical fiber delivers its maximum capacity.

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Topics: optical fiber, optical fibers, chromatic dispersion, long-haul, dispersion compensating fiber, dispersion

Fiber Network Simulation – 4 Tips for Improving Test Results

Posted by Kevin Miller on Tue, Jun 28, 2011 @ 10:06 AM

Engineers performing fiber optic network simulation testing with the goal of certifying that their equipment will work as intended once deployed in the field, often require the use of optical fiber spools to complete these procedures.  Since it is crucial these tests produce both correct and reliable results, below are some tips for ensuring the most positive results.

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Topics: optical fiber, g.652, g.652, test fiber, fiber spools, fiber network simulation, bare fiber

Fiber Optic Attenuators with Doped Fiber

Posted by Kevin Miller on Tue, Jul 27, 2010 @ 15:07 PM

What are Fiber Optic Attenuators?

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Topics: optical fiber, fiber optic attenuator, doped fiber attenuator, optical attenuator, air gap attenuator, optical signal

Commonly Used Multimode Optical Fibers

Posted by Kevin Miller on Thu, Jul 22, 2010 @ 12:07 PM

Multimode optical fiber is a type of optical fiber widely used for shorter distance applications (data center, campus, premise, etc), due to its larger core sizes (62.5um and 50um), high capacity, and high reliability.

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Topics: optical fiber, om4 fiber, om3 fiber, multimode fiber, multimode optical fiber, corning clearcurve, draka maxcap, ofs laserwave

Importance of Using Reliable Fiber Network Simulation Platforms

Posted by Kevin Miller on Fri, Jul 16, 2010 @ 13:07 PM

In many cases, the primary focus of a fiber network simulation platform is on the electro-optical equipment at both ends of the fiber optic link.  Since the purpose of network simulators is to evaluate the DUT (Device Under Test) equipment, it only makes sense that this is where the attention will be. However, it is a crucial mistake to forget about both the stability and consistency of the test fiber because the DUT test results (performance, pass/ fail, etc) totally depend on knowing that the optical fiber characteristics are consistent and very reliable.

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Topics: optical fiber, fiber spool, test fiber, network simulation, fiber network

Why Test Fiber Optic Equipment Using Real Optical Fiber?

Posted by Kevin Miller on Thu, Jun 10, 2010 @ 15:06 PM

When testing fiber optic equipment intended for longer distances during the development/certification stages, it is vital that engineers ensure their products will operate as intended once installed in the field.  In order to do this, there are a few alternative methods that have been used to accomplish this task.  As a leading provider of network simulation platforms containing real optical fiber spools, questions we commonly receive include:

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Topics: optical fiber, optical network, optical fibers, optical fiber spools, fiber optic network simulation, fiber optic equipment

Commonly Used Single Mode Optical Fibers

Posted by Kevin Miller on Thu, Jun 3, 2010 @ 13:06 PM

Single Mode Optical Fibers are commonly used throughout the world for fiber optic communications,  as they offer narrower modal dispersion characteristics, making them more suitable (than multimode fibers) for medium and longer distance transmissions.  With several manufacturers, as well as industry standards, it is important to understand what fibers are available when designing, installing, and testing fiber optic products and systems.

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Topics: optical fiber, single mode optical fiber, nzdsf, corning smf-28e, bend-insenstive fiber, allwave, teralight, bendbright, corning leaf, itu-t, single mode optical fibers

Using Network Simulation Platforms for Testing Fiber Optic Equipment

Posted by Kevin Miller on Tue, Jun 1, 2010 @ 15:06 PM

As the use of fiber optic equipment in communications systems continues to grow worldwide, network simulation testing has become vitally important for vendors seeking to offer their equipment for use in the field.

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Topics: optical fiber, fiber spool, specialty optical fibers, fiber optic network simulation, fiber optic equipment, network simulation