White Papers for fiber optic networks, technology & equipment: Lightwave Online

White Papers

Troubleshooting Fiber Installations using OTDR's


The 930XC OTDR is used to find the length and or the location of loss events of a fiber optic cable or link. This is necessary during the installation/fiber qualification processes and also during troubleshooting tasks. This application note will provide the reader with details concerning typical measurements of optical fibers for passive optical networks (PON) and point-to-point (P2P) networks.

This White Paper brought to you by Greenlee.

Successful Triple Play Service Delivery in FTTx Networks


In today's competitive telecom market service providers are looking for new ways to address their customers' demands, thus improving their competitive position and increasing their revenues and margins. Advanced triple-play residential services and premium business services are becoming part of their offering, and more and more service providers are offering them today or planning to do so in the near future.

To enable these services providers are modifying their network architectures by deploying fiber deeper into their networks, either all the way to the customer or to a location closer to the customer, from which services are delivered over copper for a short distance.
In this document we will discuss some of the challenges that service providers typically run into when delivering their triple-play services over their fiber networks.

We will first explain the different network topologies that are used for the broadband service delivery and the different technologies that are used to enable them; then discuss considerations in the selection of equipment for these networks; and finally describe some typical customer complaints and propose methodologies and tools for troubleshooting them.

This White Paper brought to you by TraceSpan Communications.

Why Coherent Detection Systems May Fail at Compensating for Polarization Mode Dispersion


This white paper, co-authored by EXFO and General Photonics (an expert in lab measurements), takes a close look at coherent detection systems, examining various factors capable of affecting their performance and causing them to be ineffective at compensating for polarization mode dispersion. This paper also covers PMD-related tests that can be performed in the lab to optimize algorithms and circuitry, as well as tests that can be carried out in the field to identify PMD issues and reduce their frequency.

This White Paper brought to you by Exfo.

Sponsored by

Optical Software Defined Networking


Software Defined Networking and Network Function Virtualization have great potential to improve the flexibility and responsiveness of networks, decrease operating /capital expenses, and add new, innovative features to many different types of communications networks.  Standard bodies have begun defining a common software interface to optical transport SDN. In the meantime, SDN principles can be extended to the optical arena, but must be done with care to ensure compatibility with emerging standards.

In this white paper, MRV will explain our approach to Optical SDN, the current status of industry standards, and where we believe Optical SDN will add value to customers’ networks, both today and in the future. We will introduce the components of Optical SDN that are designed into MRV’s new generation of optical transport equipment and show how they can allow customers to leverage advanced, software-based architectures, in order to add flexibility and resource optimization to the optical transport.

This White Paper brought to you by MRV Communications.

Characterizing and Verifying Compliance of 100 Gb Ethernet Components and Systems - Application Brief


Ethernet data bandwidth expansion from 10 Gb/s to 100G (and 1 Tb/s in the future) is a direct result in the rapid growth of capacity in modern data centers. The recent release of a series of Standards supporting 100Gb Ethernet and 32G Fibre Channel enables component and system designers to implement next generation designs utilizing serial links at these speeds. Download the application note to learn new measurement techniques needed to characterize designs and validate compliance to Standards using 25/28 Gb/s line data rates.

This White Paper brought to you by Keysight Technologies.

Electro-Thermal Actuated MEMS Mirrors for 100G Fiberoptic Switching and Attenuation Components


Fiber optic switches and variable optical attenuators (VOA) are crucial fundamental functional blocks of optical fiber networks for the telecommunication and data communication industries. Analog and latching types of electro-thermal actuated optical MEMS provide the cores for unique optical switch and variable attenuator products for light path control in communication networks. Many service providers are using the 100G technology roll out as an opportunity to upgrade their optical network infrastructure, leading to a large demand for advanced optical switches and VOAs.  The performance and cost structure of electro-thermal actuated active MEMS mirror/shutter devices make them exceptionally well suited for application in telecom and datacom optical light path switching and attenuation.

This White Paper brought to you by Agiltron.

Sponsored by

OTN - What is it and Why is it Important? Technical level 1 (Basic)


This white paper provides essential knowledge for engineers working with OTN and wanting to learn more.  The core of most telecom operator networks today is SDH/SONET (Synchronous Digital Hierarchy/Synchronous Optical NETwork), which has become the expected minimum in performance objectives for network operators today and is often described as having “five 9s” (and higher) performance, meaning at least 99.999% up time.
Many operators are implementing a Packet-Optical Transport Systems (P-OTS) network supporting integration of Reconfigurable Optical Add/Drop Multiplexer/Wavelength Division Multiplexing (ROADM/WDM) and L2 (Layer 2) switching as well as SDH/SONET.

Whitepaper brought to you by Anritsu.

Sponsored by

Characterizing High-Speed Coherent Optical Transmission Systems


Follow Keysight’s series of application notes, which describe how to generate clean and distorted signals and analyze the performance of high-speed coherent optical transmission systems.

This White Paper brought to you by Keysight Technologies.

PON and Blown Fiber: The Optimum Solution for Today's High Gigabit Speed Enterprise Networks


 As enterprise network managers, challenged like never before, seek to keep up with current and future exponential growth of data and to find the most reliable, efficient, and cost effective means to support 40Gbs/100Gbs, more and more are looking toward the passive optical network (PON) as a viable solution. This analysis addresses the many advantages of PON including the reduction of significant costs, maintenance, and energy concerns, while illustrating exactly how the PON best optimizes the enterprise network. The study also incorporates the advantages of blown fiber technology with the PON.  A case is built to show that these two technologies ,together, provide synergy that can generate even greater cost efficiencies and prepares the enterprise network with a real-time, on-site, immediately scalable, and already futureproofed network to quickly—often in minutes—meet the unforeseeable, but certain, changes characterized by today’s bandwidth hungry information and communications environment.  

Experience the Network as Your Customers Do— Closing the Turn-up Gap


Experience the Network as Your Customers Do-Closing the Turn-up Gap This white paper highlights the gap between current Ethernet service-activation methods RFC 2544 and
Y.1564 and the end-customer experience. Customer applications ride on top of the TCP layer and its performance is greatly affected when moving from a LAN to WAN environment.
Augmenting RFC 2544 and/or Y.1564 service activation with an RFC 6349-based test enables the provider to share the customer's network experience, substantially save on OpEx, and dramatically increase first-time customer satisfaction, leading to higher customer loyalty and increased profitability.

Sponsored by