We’ve recently written about the importance of simulating submarine fiber networks in a lab environment for testing and training purposes, while highlighting the history and shifting investment dynamic in this arena.  A visit to Submarine Cable Map offers an interactive view of the breadth of fiber cabling crisscrossing the oceans of the world, demonstrating its critical importance to global communications.

When utilizing optical fibers for high-speed communications applications, there two primary categories that fibers are grouped into, based on their construction and intended applications. In this article, we will review both Single Mode and Multimode optical fiber classifications, providing a quick introduction to both types and their key differences.

What is Wavelength Division Multiplexing (WDM)?

WDM is a technology approach that allows for the combining ("mux") of multiple individual light wavelengths (signals/channels) from multiple lasers on a single fiber using a passive component for transmission to another location. At that receiving location, WDM components then work in the reverse, demultiplexing ("demux") the combined wavelengths back into individual signals and routed to their respective receivers.  

With the explosive growth of global bandwidth demands, data centers and service providers have been busy adding new fiber infrastructure, interconnects, and upgrading their systems and hardware to newer and faster technology. As part of this, both latency and optical signal synchronization are critical factors that engineering teams must manage in order to maximize performance and support their customers across various industries.  

Radio Frequency over Fiber (RFoF) is a critical component in industries such as aerospace, radar, broadcasting, satellite and GPS communications, along with weight-sensitive environments such as the space or undersea industries. With RF over fiber, radio communication is consistent and reliable. 

Driving Value with Radio Frequency Over Fiber (RFoF)

Wireless technology and fiber optic communications have revolutionized everyday life.  In her article, Radio Meets Fiber Optics: RF Over Fiber, Marie Christiano states that “using radio frequency (RF) signals, wireless has given us military radar, avionics, cellular and satellite communications; our world is safer and more interesting thanks to all the benefits provided by wireless breakthroughs. We no longer need to be ‘homebased’ for an expected call or to catch a podcast; our banking, fitness routines, transportation, communications and home security can all be scheduled and controlled from our mobiles.”

Undersea cabling has connected continents for more than 100 years.  With exponential growth in bandwidth demands, private companies have begun large investments in underwater fiber optic cable to serve their customers’ needs. Because of the unique deployment and additional risks associated with underwater cabling, training and testing with the help of M2 Optics is critical. 

5G, with its promise of lightning-fast speed and response time, is everywhere.  Turn on the TV, listen to the radio, visit your favorite website, drive past a billboard and you’ll likely see or hear some advertisement, banner ad, or commercial about a wireless network’s new 5G infrastructure or phone.  This is the next evolution in mobile technology and is generally considered a leap forward and the doorway to a technology revolution.

The Importance of Reliable Fiber Networks

According to a recent study from the Fiber Broadband Association and RVA, LLC, broadband use during the pandemic became critical as individuals weathered the uncertainty from their homes. One area where broadband saw a significant increase was the use of video conferencing, a technology that requires high levels of reliable bandwidth, as well as online gaming and video streaming.  A Lightwave article notes that in the first quarter of 2020 bandwidth use increased by 47%, with, “the average broadband subscriber consuming a weighted monthly average of 402.5 GB of data.”