Switches are devices used in connecting multiple devices together on a Local Area Network (LAN). In terms of networking, the switch would serve as a controller, which allows the various devices to share information. Switches can be used in the home, a small office or at a location where multiple machines need to be hooked up. There are two basic…

Power-over-Ethernet (PoE) is the technology that allows network switches to transmit power and data through an Ethernet cable at the same time. PoE switch streamlines both of the processes of powering and providing data to the device, which makes it a straightforward and reliable device for home network and small enterprise application. This article describes two types of PoE (PoE…

Acacia Communications, a leading provider of high-speed coherent optical interconnect products had introduced AC1200 Coherent Module, based on its Pico digital signal processor (DSP) ASIC. These coherent modules are used for DCI, Metro, and Long-Haul Applications. Acacia’s AC1200 supports transmission speeds of up to 1.2 Tbps in a footprint which is 40% less than the size of a 5” x…

PoE is a technology which enables electrical power to pass over Ethernet cable at distances up to 100m. It is developed to reduce the cost of network planning, cabling and installation. PoE is primarily used for low-powered terminal devices, typically VoIP phones, IP cameras and wireless access points, but it can also provide a redundant power supply for switches to…

Sydney Trains is upgrading its network with Ciena’s 6500 Packet-Optical Platform to improve public services across its transportation system with a faster, low latency and reliable data network. The deployment will support critical passenger safety measures that ensure trains operate at safe distances. Sydney Trains operates quick, frequent and reliable trains in the greater Sydney suburban area. Sydney Trains also…

Fiber optic cable can be divided into several types. Usually we see single-mode and multimode fiber types available on the market. Multimode fibers are described by their core and cladding diameters. The diameter of the multi-mode fiber is either 50/125 µm or 62.5/125 µm. At present, there are four commonly used OM (multimode) fibers: OM1, OM2, OM3 and OM4. Each…

Rollable Ribbon technology has been introduced by Japanese fiber optic cable manufacturers since the past five years that had started revolutionize the cable design concepts. High fiber count and high density cables are now available in the market, thanks to the technological advantages offered by the intermittently bonded ribbons. Intermittently bonded ribbons offer the advantages of mass fusion splicing and…

When switches have both SFP port and Ethernet port for 1000Mbps connections, it is always the case for us to decide whether to use SFP fiber optic module or RJ45 Ethernet cable solution. Although it really depends on many factors, there are some principles that we could follow in our situation so as to meet our requirements. Common Principles for…