Different applications and optical fiber types present varying requirements for fiber coatings. When specialty optical fibers are used in demanding conditions, the fibers require coatings that are sustainable when subjected to harsh circumstances.
In fact, the successful deployment of fiber in these environments can often depend far more on the fiber’s protective external coating rather than its internal optical design. Fibers may be under attack from high and low temperature ranges, excessive humidity, high pressure, aggressive chemicals, mechanical interactions or any combination of these elements.
A recent OFS white paper in NASA Tech Briefs evaluates the stability of commercially available and in-house formulated, acrylate-based coatings to help determine the optimum coating for a range of conditions. To read more, please go HERE.
The commercial use of optical fiber in harsh environments is continually growing. These applications include medical probes that undergo sterilization at elevated temperatures and distributed sensors in oil and gas pipelines and wells exposed to extreme heat and cold. For these fibers to be used successfully, researchers and manufacturers must address the issues of fiber performance and reliability under the harshest conditions.
However, current theories and knowledge on the strength and dependability of silica-based optical fiber have been based almost exclusively on experiments conducted in optical telecommunications environments. Moreover, these tests only used a relatively narrow range of temperatures. For usage in extreme environments, fiber developers and users need new data and information.
In a recent white paper from OFS Specialty Photonics, researchers describe a setup for testing the tensile strength of optical fiber when exposed to high temperatures. This paper also reports the initial results of dynamic tensile strength testing conducted on polyimide-coated optical fiber at elevated temperatures over various time intervals.
EuroWire, an international magazine covering the wire and cable industries, has featured an OFS white paper entitled “Long-Term Cable Reliability Design Criteria.”
In this paper, Dave Mazzarese, Mike Kinard and Phil Konstadinidis investigate the current requirements for allowable axial load on fiber optic cables, with a focus on overhead cables. Their findings suggest that the current criterion found in many fiber optic cable standards may be too optimistic.
OFS’ Crimp and Cleave technology helps make the typical 10-minute epoxy/polish process for installing fiber optic connectors a thing of the past. As part of an Industrial Networks solution, the LC Crimp and Cleave Connector takes center stage because of its compatibility with most common small form-factor pluggable (SFP) transceivers.
While capitalizing on the advanced optical and mechanical properties of HCS® (Hard Clad Silica) and Graded Index HCS GiHCS® optical fibers, the LC Crimp and Cleave Connector attaches to the cable through mechanical means rather than traditional epoxy/polish methods. Designed with the field installer in mind, technicians with even minimal fiber optic experience can now use the Crimp and Cleave technology to help rapidly and efficiently install new or repair damaged fiber optic cables.
The links provided below offer detailed information on this new solution:
Fiber optic distributed temperature sensing systems (DTS) are valuable tools used for a broad range of applications, including the monitoring of hydrologic systems and power cables, and the detection of pipeline leaks. In many fiber optic DTS systems, a dual-ended configuration can correct the temperature measurement error associated with wavelength dependent loss (WDL) of the optical fiber. This design can also provide a more accurate temperature measurement when compared with a single-ended fiber system.
Xiaoguang Sun, David T. Burgess, Kyle Bedard, Jie Li and Mike Hines of OFS recently presented a white paper on this subject at the 2015 SPIE Defense, Security and Sensing Conference. This paper focuses on their research findings when a miniature-turnaround device built with a short section of a graded index (GI) fiber is used. To read more, please go HERE.
With the opening next week of the 2015 American Wind Energy Association (AWEA) Windpower Conference, fiber optics and wind power are particularly timely topics.
According to Industrial Marketing Analyst Natalia Juhasz, people often fail to realize that the many uses of optical fiber include industrial networking, such as control systems for wind power. In fact, industrialized fiber optics can provide an effective means to transmit data in harsh, outdoor environments.
The electrical power industry faces numerous challenges on a daily basis. Electromagnetic interference to extremes in temperature; providing safe and reliable electricity to our homes or workplaces, power companies depend on a multitude of systems. In order to help protect their employees from dangerous high voltage while maintaining clear communication, many power companies choose fiber optic cable to connect devices in their monitoring and control systems. Continue reading →
Factory automation has existed since General Motors implemented their automation department in 1947. Since then, companies around the world have been saving time and money using various control systems to improve quality, accuracy and precision. Continue reading →
At the upcoming PowerGen trade event in Orlando (December 11-13, 2012), OFS is proud to demonstrate HCS® (Hard Clad Silica) optical fiber, cable and field termination technology. Unlike telecommunications grade optical fibers, you can tie our products in knots. While we don’t recommend this in practice, seeing it first hand will help you understand just how rugged these industrialized glass optical fibers are. Read More…