Fiber Optics News

Photo: EOM Offshore

EOM Offshores Becomes SBIR Award Recipient

its patented mooring technology to design a new lightweight, fiber optic Stretch EM Cable that will be used to tether communication gateway buoys.  To date, there is not a mooring cable on the market that can strain as the communication gateway buoy moves on the surface in wave action without the fiber optics becoming damaged or compromised.  Communication buoys are provided by the U.S. Navy, NAVFAC, NAVSEA and SPAWAR and are important, because they provide multi-path transfers between the ocean an atmosphere in support of Fleet operations.EOM Offshore, LLC was established in 2009 to commercialize

Sonardyne 6G Wideband Acoustics allows simultaneous operations by  multiple platforms. (Courtesy Sonardyne International)

Digital Ocean: Making Subsea Data More Easily Accessible

environmental challenges.   Sonardyne also points out that lines of communication are not point-to-point connections, but that they rely on multiple systems working together, operating in different mediums and changeable environments and with varying bandwidths across the internet, linked via fiber optics, satellites, short-wave or local wifi networks, acoustic modems, optical modems, Ethernet connections and LANs, with a multitude of data formats, protocols and operating systems that engineers have to somehow splice together to provide the seamless connectivity expected by users. Thus the main

(Photo: South Bay Cable)

South Bay Cable Celebrates 60

of manufacturing challenges which required extensive prototyping, testing and building of specialized equipment. Today, South Bay Cable operates numerous production lines that can produce synthetic cables with strengths ranging from a few hundred pounds up to a quarter million pounds. The advent of fiber optics allowed the elimination of heavy signal and communication components which also helped further reduce cable weight. These advancements in materials and processing allowed South Bay to design and produce cables suitable for operation at full ocean depth in lengths exceeding 10 kilometers. 

Image: © Theerapong / Adobe Stock

To Create a Sustainable Future – Digitalize Offshore Energy

material begins to degrade.    “The data on cable failure over fifty years indicates that 70 percent of failures are based on corrosion, abrasion and third party impact. Therefore, the failures work from the outside inwards which are undetectable by current PD monitoring and internal fiber optics methods.    “When cables fail, they need to be replaced. So, teams of engineers will then spend on average two weeks locating the cable and point of fault. They will then either join the needed piece of the cable via an iron collar to the remaining healthy cable or simply install

Photo: BIRNS

SoCal Tech Focus: BIRNS

creating new connectivity solutions that provide immense performance characteristics in relatively small packages. In its flagship connector line, the BIRNS Millennium series, BIRNS customers are able to rely on a 6km open face rated assemblies that combine high and low voltage electrical contacts, fiber optics and coax all in one connector. These compact connectors offer exceptionally high density pin configurations, even in highly complex combinations of contacts in close proximity to one another. To add more flexibility and performance in RF connectivity, BIRNS recently introduced a breakthrough technology

Figure 1: TE Connectivity’s SEACON 24/48 Channel HydraLight Wet Mate connector for optical subsea distribution systems. (Image: TE Connectivity)

Fiber-Optic Connector Technology for O&G Ops

chamber. This pressure balancing system allows the connector to operate without being affected by the pressure, in contrast to most drymate connectors, which have to withstand pressure differential due to having an atmospheric-pressure internal cavity.   Smaller systems benefit from fiber optics. More compact, lighter, highly modular subsea drilling and production systems are the order of the day. They are easier and less expensive to install. Even though an optical fiber weighs much less than a comparable copper wire, there are practical limits to how small a connector should be. A subsea

Photo courtesy of Novacavi

New Hybrid Cable for Optical Fiber Configuration

Novacavi has just engineered a special hybrid cable for latest electro optical transmission systems in marine application. It is specifically designed with single mode and multi mode fiber optics in several different protocols all together within one metal tube in combination with other electrical components. This customized hybrid cable is conceived as a perfect functional solution with a reliable pressure and temperature resistance in optimized shape. “We offer our technical expertise and manufacturing efficiency focusing on continuous improvement in applications of fiber optic technology.

Figure 1

CWDM for the Subsea Market

of the signal. Using TDM (Time Division Multiplexing) each wavelength can support a number of signals. For example, using two wavelengths, you can transmit multiple videos as well as one direction of data or Ethernet while the second wavelength supports the return direction of the data. Since fiber optics is signal agnostic, each wavelength can support any type of signal from the simplest of a contact closure or TTL to the more complex, high bandwidth HDSDI and GigE signals. A typical 8-ch CWDM mux/demux can support a significant amount of both unidirectional and bidirectional signals. These signals

DOE’s Bergman, Sabo & Takeda

Deep Ocean Engineering

respectively – larger, heavier, systems that are capable of carrying larger sensors, providing even more power, and, all the while, doing it deeper. These larger systems are often outfitted with electro-hydraulic manipulator(s)/tools. From previous conversations, I realize the importance of fiber optics to the concept of your vehicles. For the benefit of our readers, kindly explain how fiber optics has enhanced the DOE line of vehicles. Bergman: Fiber Optics are nothing new at DOE. We have been using them for at least the last 20 years. Now it actually reduces the price of the umbilical

Photo courtesy of Hydro Group

Exploring the Subsea Cable Market

demanding cable designs, the days have gone when the company was simply asked to provide an underwater electrical connection.   Dynamic Design Most subsea cables designed and manufactured at Hydro Group’s Aberdeen, Scotland facility incorporate numerous specialist elements such as fiber optics, twisted pairs, triples or quads, Coaxial, VHF and high frequency RF, components.   As subsea equipment is becoming more complex with data management and collection systems transferring significantly higher volumes of information at faster rates the Transmission Characteristics, Low Loss

south bay cable

South Bay Cable

include aramid fiber and other high tensile fibrous materials. Buoyant and neutrally buoyant cables are designed for underwater pressures up to 600 PSI using foamed materials, cables required for greater depths use pressure resistant materials such as thermoplastic rubbers to add buoyancy Fiber optics are processed in several different configurations including tight buffered constructions reinforced with aramid fiber and fiber optics encapsulated inside hermetically sealed stainless tubes. Both the plastic and stainless steel techniques have been incorporated into numerous designs and subjected

Image: Linden

Linden Debuts Mid Temp STFOC

With engineers pushing the limits of where fiber optics can be used, cables are being exposed to increasingly hostile environments. High temperature resistance is a major concern for applications as varied as downhole to space.   With this in mind, Linden has introduced a Mid-Temp (130C) STFOC, adding to the company’s existing standard and High-Temp (300C) STFOC.   Linden’s STFOC cables are available for a variety of underwater uses, from munitions tethers to ROV controls to littoral water sensing. Using its patented cable jacket construction designed to protect the fiber in

Dingena Theunisse

Online Learning Benefits Offshore Workforces

and mobiles. Bartolf concluded, “This is a faster and more efficient way for MTCS to deliver solutions to our global client base and obviously has huge potential for companies.” Courses available via MTCS Online include: High Voltage, ROV Hydraulics and Skills Assessor - with Fiber Optics coming shortly. Additionally, the system is host to competence programs for all IMCA grades, including marine back-deck, diving, survey, and in fact all offshore IMCA competence grades. www.mtcs.info/online MTCS also deliver ROV Induction courses, which are available world-wide, currently Singapore

The Successor Submarine replaces the current Astute submarine fleet.

Global Navy Power & Changing Paradigm of Submarine Programs

submarine. Watch the old black and white war movies – when the Commander shouts “Up periscope!” and half of the Atlantic comes rushing in! Now, with advanced technology, the mast is external to the hull and all of the data and communications are fed via cables and connectors using fiber optics, which is Hydro Group’s area of expertise. Today, mine counter measures, (MCMs) towed arrays, active and passive sonars and anti-surface ship missiles are necessary requirements of the new construction for modernization of current submarines in service, such as the UK’s Astute fleet

Photo: Ashtead Technology

Subsea Technology Training Academy Launched

Subsea Technology Training Academy will be led by Steve Cullen who has joined the company in the newly created position of training manager. Formerly with Subsea 7, Cullen is an electrical and electronic engineer with over twenty years offshore experience in subsea construction, hydrographic survey, fiber optics, remote intervention and drilling operations support. He spent several years in vocational and public sector education and training roles focusing on science technology subjects with particular experience in innovative instructional design methodologies. The courses available at Ashtead Technology&

Rope & Wires: At the Forefront of Technology

. Most notably, 1,000 meters of Teufelberger’s Evolution TK16 wire rope was used in the rescue efforts of the 33 trapped Chilean minors in 2010. Delivering on short notice to customers in need is a Hallmark of this firm. Always at the forefront of technology, Teufelberger’s STRESSLESS DATA fiber optics technology facilitates the simple and well protected flow of data across aerial cableways and aerial passenger ropeways throughout the life of the rope. Likewise, and although Teufelberger is generally recognized throughout the world as a manufacturer of wire rope, the company’s fiber rope

A set of paired BiDi modules transmitting data over a single fiber at two different wavelengths.

Multi-channel Fiber Optic System Design: Going Big in Small Packages

, a designer can route all of a vessel’s data through one of the two fibers, reserving the other fiber in the 3O-2F2 as a spare, or as a convenient way to quickly add new instruments for particular missions. More than ever before subsea designers are faced with limited space and limited budgets. Fiber optics allow the addition of high bandwidth devices without a dramatic increase in the size of a vehicle’s tether. Terrestrial designers faced a similar limit to the space available to them. Public utility right-of-ways have only so much space available. These limitations lead them to use technologies

Marine Technology Magazine Cover Jan 2019 - Underwater Vehicle Annual

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