FBG sensors for monitoring of overhead transmission systems

FBG sensors for transmission system monitoringNow it is highly important for the industrial sphere to have the ability of overhead transmission systems monitoring technology with the aim of potential error identification that can touch vital components.  The main reason for severe mechanical errors is different in extreme situations. Consequently, the monitoring system of excessive mechanical and environmental loadings is the only significant solution to find and prevent potential risks.

The fact is that there are numerous factors that can occur in overhead transmission systems and cause different loadings. For example, the loading conditions include:

  • excessive bending;
  • aeolian vibrations;
  • galloping;
  • ice loading and shedding;
  • the impact from falling objects;
  • hot spots;
  • aging;
  • galvanic corrosion, and others.

Herewith, these factors could severely damage the structural integrity of the conductors but for fiber Bragg gratings sensors for transmission monitoring.

Thus, a novel composite based overhead transmission lines were designed in response to the world’s increasing level of electrical consumption. Moreover, these FBG conductors are able to maintain severe environmental conditions, and they are considered to have a high period of service that can last for many decades.

It should be mentioned that previous monitoring systems of transmission lines were very difficult or even sometimes impossible process. Nowadays modern monitoring technology allows reducing costs on maintenance and inspection, and it is also able to make life predictions of the transmission systems.

This monitoring system uses optical sensing technology in high voltage environments whose main benefit is the immunity to electromagnetic interference and low signal weakening that make the system ideal for power transmission structures.

Also, FBG sensors include conventional single-mode optical fiber that enables to measure temperature and strain of live lines in-service. Herewith, the process of monitoring can be made from miles away without conductive materials. The data obtained by strain signals processing from static and dynamic loads can be used for the detection of conditions that can affect the conductors.

The application of FBG monitoring technology also includes the assessment of the structural system health as well as the identification of the impact location relative to the position of FBG sensors along the conductor. Finally, the development of an FBG monitoring system will provide better control and maintenance procedures for the conductors of different types.

Optromix is a fiber Bragg grating (FBG) products manufacturer that offers FBG sensors, FBG interrogators and multiplexers, DAS systems, DTS systems. Optromix creates and supplies a broad variety of fiber optic solutions for monitoring worldwide. If you have questions or would like to buy FBG products, please contact us at info@optromix.com

Fiber optic spark monitoring for EDM

FBG sensors for EDMEDM or electrical discharge (spark) machining is the most advanced of metalworking technologies. EDM is worldwide used because of its high accuracy and machining applications where traditional metal removal is highly difficult or even impossible.

The principle of EDM operation includes the spark that moves from the wire electrode to the work item approximately at the same speed as the electrical signals transmitting through the wires of the monitoring system. Nevertheless,  the distance between this work item and the wire electrode is shorter than the space interval between the spark and the control, that is why there are some difficulties in monitoring.

Thus, spark monitoring is very important and needs some technical improvements. Fiber optics is the best solution for the challenge that provides a high level of process control, increases the life of the wire, and eliminates the possibility of wire damage. Moreover, the use of a fiber optic spark monitoring system improves the problem of slow electrical signals and thereby, allows making timely all required adjustments and maintaining permanent sparks.

The main aim of fiber-optic cable use is the reduction of wire wear to save costs for the user. For example, previous machines had stronger sparks and low frequency that provoked high wire pressure. Novel fiber monitoring systems have a higher number of sparks per second with less intensity.

It should be mentioned that fiber-optic cables are not limited by the electricity speed comparing to electrical wires because fiber cables transmit data through light pulses. Moreover, they are almost one hundred times faster than electrons. This improvement allows not only reducing wire wear but also keeping spark output and decreasing the necessary voltage.

Also, fiber optic cables leave behind electrical wires because of the following reasons:

  • safety due to nonconduction of fiber optics;
  • lightness despite the required power and distance;
  • higher data bandwidth at longer distances;
  • faster transmission speed;
  • the thinness of the cable;
  • the durability of fiber cables;
  • better reliability;
  • lower total costs.

Optromix is a manufacturer of innovative fiber optic products for the global market. The company provides the most technologically advanced fiber optic solutions for the clients. Optromix produces a wide range of fiber optic devices, including cutting-edge customized fiber optic Bragg grating product line and fiber Bragg grating sensor systems. Moreover, Optromix is a top choice among the manufacturers of fiber Bragg grating monitoring systems. If you have any questions, please contact us at info@optromix.com

Total information about fiber optic temperature sensor

FBG temperature sensorsToday all modern industries include highly complex and sensitive operations that require permanent operational conditions that are possible to provide due to the use of advanced technologies for temperature measurement. One of the potential solutions is the use of fiber optic temperature sensors.


There are several ways of temperature measurement: classic mercury glass thermometer, infrared pyrometer, electronic thermometer. However, the most effective method is fiber temperature sensing because it provides accurate measurement compared to the mentioned techniques and has numerous fields of application such as high voltage machines, nuclear power plants, chemical power plants, etc.

The types of fiber temperature sensors include interferometric and non-interferometric sensors. The traditional non-interferometric sensor has multi-mode optical fiber construction and materials that are sensitive to temperature. Also, they are able to register changes, for example, absorption, transmission, and reflection parameters due to temperature variation.

The simple interferometric fiber optic temperature sensors are more flexible and provide the sensitivity of a higher level. The fields of the use include temperature, pressure, rotation, strain, etc. The principle of the operation is the comparison of the beam phase through sensing fiber with the reference beam.

The advantages of optical temperature sensors:

  • Immunity to electromagnetic and stray radiation;
  • Possibility of the use in hard electrical conditions;
  • Greater accuracy and faster response time;
  • Lightweight and compact size;
  • Low cost;
  • Wide temperature measurement range.

Nevertheless, fiber optic temperature sensors are not ideal and have some disadvantages such as different temperature ranges of operation and measurement accuracy for different types of sensors, the difficulties of development expensive price for some optical sensors.

Optromix is a fast-growing vendor of fiber Bragg grating (FBG) products line such as fiber Bragg grating sensors, FBG interrogators and multiplexers, Distributed Acoustic Sensing (DAS) systems, Distributed Temperature Sensing (DTS)systems. The company creates and supplies a broad variety of fiber optic solutions for monitoring worldwide. If you are interested in temperature measurement systems and want to learn more, please contact us at info@optromix.com