Archive Post for December, 2017

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What is DWDM and Why is it Important?

It has been almost 20 years since DWDM came on the scene with Ciena’s introduction of a 16 channel system in March of 1996, and in the last two decades it has revolutionized the transmission of information over long distances.  DWDM is so ubiquitous that we often forget that there was a time [ Continue reading…]

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dense wavelength division multiplexing (DWDM)

DEFINITION dense wavelength division multiplexing (DWDM)   Dense wavelength division multiplexing (DWDM) is a technology that puts data from different sources together on an optical fiber, with each signal carried at the same time on its own separate light wavelength. Using DWDM, up to 80 (and theoretically more) separate wavelengths [ Continue reading…]

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What is fiber to the x (FTTx)?

Fiber to the x (FTTx) is a collective term for various optical fiber delivery topologies that are categorized according to where the fiber terminates.   Optical fiber is already used for long-distance parts of the network, but metal cabling has traditionally been used for the stretches from the telecom facilities [ Continue reading…]

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What do Cat5e, Cat6, and Cat6a have in common?

They each utilize 4 twisted pairs in a common jacket. They use the same style RJ-45 jacks and plugs. And, they are each limited to a cable length of 100 meters including the length of the patch cables on either end of the link. The parts are interchangeable, so you [ Continue reading…]

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How to Inspecting Fiber Optic Cables by Fiber-MART.COM

Visual Inspection Of Connectors With A Microscope   Visual inspection of the end surface of connector ferrules with a microscope is used for finding dirt or scratches on fiber optic connectors and inspecting polish-type connectors during the termination process to find possible defects. This requires a microscope which has a [ Continue reading…]

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Which Fiber Optic Connector should you use?

The network cabling industry’s fiber optic manufacturers over the last few decades have been on a constant mission to develop the better fiber connector. This means lower cost, lower dB losses, easier to terminate out in the field. There have been over 100 connectors developed over the years but a [ Continue reading…]

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About the Cummins 4BT engine

About the Cummins 4BT engine    Published by http://www.hubeijuly.com Series B is a series of four-cycle diesel engines with four or six cylinders of “one litter per cylinder” capacity, which Cummins has developed for use in automotive, agriculture, power generation and marine applications. They developed the 4BT engine series as [ Continue reading…]

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Introduction of 4BT Cummins Parts and Accessories

4BT Cummins Parts and Accessories One of the coolest engines ever produced is the 4BT Cummins, in all of its variations. You may be wondering why we would be touting a teeny 3.9L, four cylinder engine as one of the coolest engines? Well that’s simple. This little diesel can be [ Continue reading…]

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Release new Fusion Splicers – S178A & S153A

The S178A is the successor to the best selling S177A. The S178A has a more rugged, compact and lighter body compared to the previous model with vastly improved splicing & heating time.   Using the same rugged metal body of S178A, FEC will also launch another new Fusion Splicer in [ Continue reading…]

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PLC Splitter VS. FBT Coupler

We use fiber optic splitter to distribute or combine optical signals in many applications, we have one question:Shall I use PLC or Fused Coupler ?     When we do comparison, we need to do comparison for devices of the same split-ratio.      Insertion loss and uniformity vs. wavelength  [ Continue reading…]

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