As we all know, WDM (wavelength-division multiplexing) is a method of multiplexing a number of optical carrier signals onto a single optical fiber by using different wavelengths (colors) of laser light. It enables bidirectional communications over one strand of fiber, as well as multiplication of capacity. In a WDM system, a multiplexer (Mux) is used […]
WDM System
Basic Knowledge About EDFA
In optical communication network, signals travel through fibers for very large distances without significant attenuation. However, when the signals need to transmit several hundreds of kilometers, it becomes necessary to amplify the signals during transit. EDFA (erbium doped fiber amplifier), commercialized in the early 1990’s, became a key enabling technology for optical communication networks, and […]
A Key Component in DWDM System – Wavelength-Converting Transponder
The evolution of dense wavelength-division multiplexing (DWDM) systems is going on with an explosion in traffic and an increase in bandwidth-hungry applications for more multimedia services. Dense wavelength-division multiplexing, as an important technology in fiber optical network, is ideal for fiber optical-based solutions. By converting the operating wavelength of the incoming bitstream to an ITU-compliant […]
Two Common Types of Optical Splitters – FBT And PLC
Over the past few years, optical technology has made a huge step forward to meet the growing demands for optical performances in fiber applications. Take splitter technology for example, advances have been made in its fabrication and packaging, which makes optical splitters an even more important passive device in passive optical networks (PON). Optical Splitter […]
Three Key Components in a DWDM System
The explosive growth of Internet use and various applications of large bandwidth have increased the demands of information-carrying capacity in optical data transmission. DWDM, based on WDM (wavelength-division multiplexing) technology, has been developed to satisfy these demands. And this post gives a brief introduction of three main components in a DWDM system: MUX, DEMUX and […]
Two Types of WDM Connectivity – CWDM and DWDM
Intensive needs for great bandwidth availability and data transmission capacity have boosted the use of WDM in telecommunication. WDM (wavelength-division multiplexing) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e., colors) of laser light. There are two types of WDM : CWDM and DWDM. What’s the […]