Optical fiber is made by drawing glass or plastic to a desired length and diameter (slightly larger than a human hair). This flexible and highly pure fiber is most commonly used to transmit light for a wide range of applications including visible light displays, sensors, and high-speed communications networks which we will discuss in this article.
single mode optical fiber,
multimode optical fiber
The first instances of glass being drawn into fibers date back to the Roman times, however it was not until the 1790’s that a pair of French brothers named Chappe, invented the first “optical telegraph”. This primitive system was made up of towers outfitted with a series of lights that operators could use to relay messages back and forth.
Often not considered, it is important to remember that looks really do matter!
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In order to meet the growing needs of the local community, many municipalities have chosen to make significant investments to both deploy and maintain their own fiber optic networks for communications relating to a number of important areas:
remote fiber test system,
fiber monitoring system,
fiber optic intrusion detection,
municipal fiber optic network,
emergency service monitoring
Wide Area Network Emulators, or WANem, are designed to simulate WAN connections for use in laboratory settings, and makes for a good delay simulator as well.
By calculating the interactions between different network entities, WAN emulation creates artificial delay, bandwidth constraints and other impediments and functions.
This functions as a way to gauge applications and protocols against actual conditions. WAN characteristics like packet loss, disconnections, jitter, and time delay can be mimicked over a transparent application gateway with a WANem. This unique test condition allows users to bring the internet into their development, laboratory or test environment.
While fiber optic technology has been utilized for many years in the communications industry, consumers generally identify with the role that it plays in wired communications such as Cable TV, Fiber-To-The-Home, and the related networking equipment. However, what most overlook or do not realize is the significant impact that deploying optical fibers has also had on something consumers use every day – mobile devices. In order to achieve the high speed data levels that we have become accustomed to when using mobile devices, cell towers and their supporting networks had to be retrofitted with optical fiber cables.
While many enterprises are considering the move to a 40/100G ethernet infrastructure, often they overlook the impact of remaining with a multimode fiber infrastructure. While there is little difference in the infrastructure requirements of 10G ethernet for single-mode fiber and multimode fiber infrastructures, there is an exponential difference in 40/100G ethernet infrastructures. Many people tout the economics of MMF vs SMF lasers as the key reason for remaining with their MMF infrastructure; however, the savings achieved there will likely be erased by the increased cost of the passive optical infrastructure.
single mode optical fiber,
multimode optical fiber,
There are many scenarios in today’s networks that require the replication of an optical signal, also known as optical multicast. Some of those scenarios include video feeds or data streams that need to reach multiple endpoints simultaneously. In other scenarios an expensive 40/100Gbps port may need to be replicated. In either case, current multicasting solutions create potential problems associated with congestion, cost, and latency.
While there are a number of aspects that can be discussed in regards to optical switching technology, the focus of this article is to provide information about two key categories of optical switches – symmetric and asymmetric. The concept is very straightforward, but still important to understand when determining which type of optical switch will be most suitable for a given application.
symmetric optical switches,
asymmetric optical switches,
As a provider of Optical Modulation Index (OMI) Instruments used for optimizing laser transmitter performance, our organization has the opportunity to work closely with many of the talented technicians and engineers at the leading CATV operators around the world. As a result of the many discussions related to both the importance and use of OMI for maximizing system performance, there have been a number of consistent topics we have seen regarding the deployment of transmitters in the network.
optical modulation index,