Optical Fiber News

Takayuki Higuchi, Chief of Sales and Marketing at Riken Dengu Seizo Co., Ltd. (Photo: Hydro Group)

Hydro Group Secures Japanese Partner

., Ltd.The Tokyo-headquartered firm will be the official distributor and business partner for Hydro Group’s subsea connectivity product range, including subsea electrical/optical cables and connection assemblies, in the Japanese market.Riken Dengu Seizo specializes in the sale of electrical and optical fiber cables and connectors, and also supplies electronic subsystems and componentry for the defense and aerospace sectors.Heather Andrade, Head of Sales at Hydro Group Plc, said, “The appointment of Riken Dengu Seizo as Hydro Group’s preferred business partner in Japan is an important

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

to copper, the high bandwidth of fiber allows richer data streams and much longer step-out distances (i.e., distance between subsea installation and surface facilities). Umbilical cables can easily reach lengths of 10-15 km, while pipeline cables, used for sensing, can extend to 40 km.   Optical fibers also make superior distributed sensors. Changes in pressure or temperature modify the backscatter profile, allowing highly accurate measurements by monitoring the backscattered light. Because the velocity of light in a fiber is well understood, the backscattered light reveals information on

Photo courtesy of Novacavi

New Hybrid Cable for Optical Fiber Configuration

efficiency focusing on continuous improvement in applications of fiber optic technology.” says the company. “We supply Hybrid cables with glass and or plastic F.O. (single mode 9/125 or multi mode 50/125; 62, 5/125) and tubes and hoses in almost any conceivable configuration with Optical Fiber Testing report. “   Established in 1975 as a specialist cable manufacturer, Novacavi conceives, manufactures and provides in-house high quality bespoke cables matching customers’ exact requirements – even if small quantities are needed in a variety of demanding applications

MTR100: Linden Photonics

.com  /  W: www.LindenPhotonics.com CEO/President: Amareh Mahapatra No. of Employees: 6 Linden Photonics Inc. was founded in 2002 by Dr. Amaresh Mahapatra and Robert Mansfield. Since its inception, Linden’s design specialists have developed a range of miniature, high strength optical fiber cables, cable coatings and specialized optoelectronic packaging for environments where high strength and compact size are required. On the forefront of polymeric design Linden has worked with the Navy, it’s prime contractors and many local manufacturing and plastics experts to develop

MTR100: SeaView Systems, Inc.

;     Seaview Systems (SVS) has developed a world-class tunnel inspection solution incorporating inertial navigation into an articulated ROV body.  The system merges several new technologies engineered by SVS including a distributed control topology (ROVbus) and an ultra-compact optical fiber multiplexer system.  The ROV is capable of accessing tunnels through tight valves to inspect and geo-locate the tunnels for distances in excess of 20,000 feet. SeaView Systems was founded on experience in maritime electronics and Remotely Operated Vehicles.  Since beginning operations

MacArtney Launches NEXUS MK VII MultiPlexer

a tablet which is online via LAN or WiFi. Sensor power status, telemetry link, leak alarm etc. is also continuously monitored by the software. Advanced features include programmable fuses and software enabled interface selection. Moreover, the NEXUS MK VII carries all signals over one single mode optical fiber via coarse wavelength division multiplexing, hereby providing a highly efficient link between surface and seabed. www.macartney.com   (As published in the MAY 2015 edition of Marine Technology Reporter - http://www.marinetechnologynews.com/Magazine

      The Nexus MK VIII multiplexer from the MacArtney Group (photo courtesy of the MacArtney Group)

MacArtney Unveils Multiplexer at 2015 Ocean Business

a tablet with LAN or WiFi connectivity. Sensor power status, telemetry link, and leak alarms are also continuously monitored by the software. Advanced features include programmable fuses and software enabled interface selection. Moreover, the NEXUS MK VII carries all signals over one single mode optical fiber via coarse wavelength division multiplexing, providing a highly efficient link between surface and seabed.   The NEXUS MK VII is highly configurable and allows for an easy upgrade and modification path when requirements change. Multiplexer options can be installed between jobs or even

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

, subsea designers find themselves in need of more efficient ways to add fiber connectivity to their designs. Many designers tend to approach a project in a basic manner and then scale up as their systems grow in complexity and require more capability. Thus, many subsea systems start with a single optical fiber servicing a single instrument. That instrument talks whenever it needs to while the receiver is set to passively listen. In this simple arrangement, adding instruments is usually done by adding fibers. This is acceptable when only a handful of instruments are being considered, but quickly becomes

TE SubCom Installs New Undersea Systems

will enable both today’s capacity needs while being ready for future requirements. The demonstration combined a specially designed underwater fiber plant as well as TE SubCom's commercially available coherent C100U line card that features synchronous modulation for 100 Gb/s operation. The optical fiber used was optimized for coherent transmission and resulted in over 131,000 ps/nm of dispersion. TE SubCom’s C100U line card utilized Nyquist channel spacing to obtain 300% spectral efficiency. The C100U line card supports electronic dispersion compensation and uses patented synchronous modulation

Marine Technology Magazine Cover Oct 2019 - Ocean Observation: Gliders, Buoys & Sub-Surface Networks

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