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13 Apr 2016
24-fiber vs. 12-fiber connectors and assemblies

With the announcement of the IEEE 802.3ba 40GBASE-SR4 and 100GBASE-SR10 standards in 2010, 24-fiber connectivity has been adopted as the ideal migration solution in the data center. At the same time, there are also some confusion and misinformation with the growth of 24-fiber MPO/MTP solutions within industry circles. This article will talk about two misconceptions about 24-fiber connectors and assemblies in MTP/MPO connectivity.

Using 24-fiber cabling throughout an entire channel provides extra flexibility, as users can easily migrate from 10G to 40G or 100G by simply swapping out the connectivity at the end of the channel. Pre-terminated cabling using 24-fiber connectors provides...

19 Feb 2016

Optical loss testing of multimode fiber can be affected by many variables, including fiber mismatch, the type and quality of the test reference cords and the launch conditions for launching light into the fiber under test. This article will look at how these different variables can affect the optical loss performance of a link under test.

Optical Loss Testing - Why It Is Important

Providing an accurate method for optical loss testing of multimode fiber is becoming a lot more important for higher data rate applications that place more stringent requirements on the maximum allowable loss for a channel between an optical transmitter and an optical receiver. The higher the data rate, the tighter the loss budget for a channel. The...

25 Jan 2016

With speeds in the data center now increasing from 10 Gbps to 40 Gbps and eventually to 100 Gbps, different optical technologies and cabling infrastructure are required. The QSFP+ transceiver is the dominant transceiver form factor used for 40 Gigabit Ethernet applications. In 2010 the IEEE standard 802.3ba released several 40-Gbps based solutions, including a 40GBASE-SR4 parallel optics solution for MMF. Since then, several engineered solutions have been released, including 40GBASE-CSR4, which is similar to 40GBASE-SR4 but extends the distance capabilities. This article will mainly introduce the typical cabling components and the cabling options for 40Gbps parallel optical modules.


Typical Cabling Components

MTP trunk...