Numerical aperture (NA) is a critical performance specification for multimode fibers. It indicates the maximum angle at which a particular fiber can accept the light that will be transmitted through it. The higher an optical fiber’s NA, the larger the cone of light that can be coupled into its core. Graded-index multimode fibers have a […]
Month: May 2015
Fault Detection Technique by using OTDR: Limitations and drawbacks on practical approach of measurement
Practically in all kind of communication system, more or less losses are involved. To make the system more efficient, it is needed to identify and trace the faults & losses so that suitable techniques can be implemented to eliminate or reduce the losses. In optical fiber communication, optical time domain reflectometry (OTDR) is a commonly […]
Development of passive optical networks (PONs)
PONs have attracted great attention in recent years, also from standardization bodies. Once again, the primary organizations are ITU-T and the IEEE (Institute of Electrical and Electronics Engineers). The latter defined the “Gigabit Ethernet Passive Optical Network (GEPON)” back in 2004 in the standard IEEE 802.3ah1. It is well known and established under the name […]
Upgrading existing connection networks
The increased use of FO cabling is making broad band infrastructure a reality in business and residential districts. This cabling addresses the demand from customers for ever more band width with efficient networks while protecting the investment to the greatest possible extent. Network operators almost always take a two-prong approach to connection networks. Cable network […]
Outside Plant (OSP) Design
The designer of the fiber network designs and digitizes fiber features using the standard G/Technology feature placement workflow and a fiber splicing editor. The end-to-end workflow is as follows. At a given location (central office, switching center), the user creates an ISP Connect feature. From this feature, the user places fiber cables, splices, remote terminals, […]
Measuring Bandwidth of 10G Laser-optimized Multimode Fiber
1. The traditional Overfilled Launch (OFL) method of measuring bandwidth in multimode fiber has been replaced by new, more advanced techniques. The advent of 850 nm VCSEL light sources and 10G laser-optimized 50 µm multimode (OM3) fiber has enabled cost-effective 10G transmission for short reach enterprise applications. Unlike LEDs, VCSELs don’t light up the entire […]
What is the difference of MTP connectors and MPO connectors
The MPO connector is defined by IEC-61754-76, it is a multiple fiber core connector, “Fibre optic interconnecting devices and passive components – Fiber optic connector interfaces – Part 7: Type MPO connector family”; and TIA-604-5-D, ”Fiber Optic Connector Intermateability Standard, Type MPO”. The term MTP is a registered trademark of US Conec. This is the […]
10G EPON optical transceivers drive FTTP applications
GPON and 10G EPON optical transceivers for fiber to the premise (FTTP) or FTTH Fiber to the home applications to its Passport line of universal transceivers. For GPON, SFP transceivers for both OLT (optical line terminal) and ONT/ONU (optical network terminal/Optical Network Unit) interfaces. there are also 10G EPON via both SFP+ and XFP transceivers; the SFP+ […]
MPO connectors are ready for prime time
As the industry deploys 40-Gbit/sec optical networks and moves ahead to 100-Gbit/sec data rates, service providers and data center managers may question whether the multi-fiber push-on (MPO) connector can perform reliably at those speeds. They saw the first-generation MPO as a “weak link” in optical networking, primarily because of its higher optical loss, lack of […]
Higher Data Center operational temperature affect fiber optic reliability
Big Data Analytics, The Cloud, Internet of Thing: The buzz words in the ICT (Information and Communications Technology) industry. All of which fuels the flourishing Data Centers market across the globe at an alarming rate. Cisco predicted that by 2018, more than three quarters (78%) of workloads will be processed by cloud data centers; 22 […]