WDM-PON Technology

WDM-PON Technology A typical wavelength division multiplexing PON (WDM-PON) architecture is shown in Figure 4-1. The wavelength division MUX/DEMUX is employed in the ODN. In the example in Figure 4-1, array waveguide gratings (AWGs) are used to MUX and DEMUX wavelengths to or from ONUs. Signal transmission in WDM-PON is similar to that in the […]

100G & 400G

40G, 100G, 400G is not far

Is it possible to think of something without knowing a word to describe it ? According to some studies, humans understand the concept of numbers and counting before knowing the words for those numbers. Perhaps that means that this month’s blog will be easier for everyone to understand, since I’ve found that it’s hard to […]


Optical Fiber FAQ

Optical Fiber FAQ (Frequent Asked Question) Optical Fiber FAQ 1: What is optical fiber? A: Optical fiber is a glass or plastic filament that guides a light wave along its path. In another terms, fiber optics is a medium for carrying information from one point to another in the form of light. Unlike the copper […]


Fusion Splicing FAQ

Fusion Splicing FAQ, Updating Fusion Splicing FAQ 1: What is Fiber Splicing? A: Fiber Splicing is used to permanently join two optical fibers where no additional changes are expected to be made to those fibers at that juncture. This is in contrast to connectors, which are designed to allow quick re-configuration of fiber links. There […]

FTTH Network

GPON GEPON Comprehensive Comparison

Initial PON (1990s) were based on ATM framing (APON, BPON), ATM-based BPON were inefficient, majority of traffic through the access network was IP traffic, Ethernet based PON (EPON), QOS-aware Gigabit Ethernet (GbE) (VLANs, prioritization, OAM) and integration with other Ethernet equipment, Gigabit-capable Passive Optical Network (GPON) proposed by FSAN members (Quantum Bridge et. al) – […]



OTDR FAQ Gathering AFL Global OTDR FAQ OTDR FAQ 1: When do I need to use a launch cord (cable) with my OTDR? A: A launch cord ‘moves’ the effects of the OTDR’s own front panel connection away from the first connection in the link under test. This allows the OTDR to measure the loss […]

Test and Measurements

OTDR used in Fiber Optic Network Acceptance testing – 2

OTDR used in fiber network acceptance test We will use the manual method of OTDR operation. Start the OTDR and select the correct wavelength and refractive index for the test. Set the OTDR’s measurement mode to “Two Point Attenuation”. In this mode, the OTDR allows you to set markers at any two points on the backscatter […]

Test and Measurements

OTDR used in Fiber Optic Network Acceptance testing – 1

OTDR used in Fiber Optic Acceptance testing – 1 Fiber optic acceptance testing ensures that any new cable matches the optical and physical requirements of the planned application. This testing should be performed upon delivery of the cable, prior to its installation. It is important that the operator knows the specifications in order to properly […]


What is Fiber Testing

What is Fiber Testing Why Fiber Testing is important? Fiber optics cabling is the core of today’s Datacom/FTTH/CATV/ networks. Optical fiber is the currently predominant media type for mission-critical datacenter links, backbone within buildings, and longer distances for campus networks. As network speeds and bandwidth demands increase, distance and loss limitations have decreased, making fiber optic […]

Test and Measurements

EXFO AXS-110 All-Fiber OTDR

EXFO AXS-110 All-Fiber OTDR Intrroduction EXFO AXS-110 OTDR is new generation production for fiber optic LAN/WAN Test, It is easy Location and Characterization of Events, EXFO AXS-110 All-Fiber OTDR helps you boost test productivity for inside-plant applications. Its exceptional 0.8 m event dead zone enables you to easily locate and characterize all events between patch […]