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In a 46.8 million move IPG Photonics has purchased Menara. They hope that the purchase will broaden their telecommunications offerings in internationally and in North America. Read the full story here as written by fibre-systems.com. 

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Understanding Polarity in MPO System

 

MPO/MTP technology has led to the adoption of 40/100GbE, however on of its challenges is with regards to  proper polarity of these array connections.  Maintaining  the correct polarity across a fiber network enables signals  from any type of active equipment to be  directed to the receive port of a second piece of active equipment – and vice versa. To ensure the MPO/MTP systems work with correct polarity, the TIA 568 standard suggests several methods.

 

MPO Connector

First on the list is the  MPO connector usually consisting of  12 fibers. 24 fibers, 36 fibers and 72 fibers  Each MTP connector has a key on one of the flat side added by the body. When the key sits on the bottom, this is called key down. When the key sits on top, this is referred to as the key up position.  In this orientation, each of the fiber holes in the connector is numbered in sequence from left to right and is referred as fiber position. The orientation of this key also determines the MPO cable’s polarity.

Three Cables for Three Polarization Methods

The three methods for proper polarity defined by TIA 568 standard are named as Method A, Method B and Method C. To match these standards, three type of MPO truck cables with different structures named Type A, Type B and Type C are being used for the three different connectivity methods respectively. In this part, the three different cables will be introduced firstly and then the three connectivity methods.

MPO Trunk Cable Type A: Type A cable is also known as straight cable, is a straight through cable with a key up MPO connector on one end and a key down MPO connector on the opposite end. This makes the fibers at each end of the cable have the same fiber position.

 

The issue of polarity with MPO cables can be easily addressed by selecting the correct type of MPO cables, connectors, cassettes and patch cables. Various  polarity settings/methods can be applied  to satisfy the requirements of the 40G environment.  

 

 

 

The issue of polarity with MPO cables can be easily addressed by selecting the correct type of MPO cables, connectors, cassettes and patch cables. Various  polarity settings/methods can be applied  to satisfy the requirements of the 40G environment.  

 

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Fiber optic connectors have traditionally been the biggest concern in using fiber optic systems. While connectors were once unwieldy and difficult to use, connector manufacturers have standardized and simplified connectors greatly. This increases the user use convenient increase in the use of optical fiber systems; It is also emphasizing taken proper care of and deal with the optical connector. This article covers connector basics including the parts of a fiber optic connector, installing fiber optic connectors, and the cleaning and handling of installed connectors. For information on connector loss, see Connector Loss Test Measurement.

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  • SEACOM expands South African fiber footprint with FibreCo acquisition
    SEACOM, which operates the submarine network of the same name as well as other undersea and terrestrial networks in Africa, says it has reached a purchase agreement to acquire South African fiber-optic network operator FibreCo Telecommunications. Terms of the acquisition, conducted through affiliate SEACOM South Africa, were not disclosed. The deal is subject to approval by the South African Competition Commission.
  • Southern Cross Cables upgrades submarine network with Ciena GeoMesh Extreme

    Ciena (NYSE: CIEN) says it has supplied its GeoMesh Extreme technology to Southern Cross Cables to enhance the submarine network operator’s undersea network. GeoMesh Extreme features Ciena’s 6500 T-Series equipped with the company’s WaveLogic Ai tunable coherent optical engine. Among other milestones, this is the first submarine network deployment of the GeoMesh Extreme technology over compensated cable, says Ciena.