How to Make Surgery Less Invasive with the Fiber Optic Products Help?

FBGs for less invasive surgeryOptical fibers have the potential to be used in many biomedical applications. Such fibers have been used in medical devices since the 1960s when fiber optic bundles were successfully pioneered for both illumination and imaging through endoscopes. Optical fiber imaging tools were widely accepted for invasive surgery since the 1980s. The minimally invasive surgery promises decreased pain and trauma during operations, faster recovery, and a reduced risk of infection. Nowadays special fiber optic products also are used as intelligent sensors to monitor physiology parameters such as temperature, pressure, oxygen concentration, and applied force.

Fiber optic sensors offer many advantages in comparison with conventional electronic sensors in medical sensing: small size, immunity to electromagnetic interference (EMI), enhanced sensitivity, robustness, and geometrical versatility. Additionally, they are free from electrical parts or conductors in the sensor area. The unique properties of fiber optic products and based on the fiber optic equipment have enabled complicated procedures in cardiovascular examiners, angiology, gastroenterology, ophthalmology, oncology. neurology. dermatology, and dentistry. Novel specialty fiber types are also opening up entirely new sensing concepts. In addition to this, endoscopes represent the largest end-use market for medical fiber optics, supported by the growing popularity of minimally invasive surgeries. Minimization of medical instruments is a key trend encouraging the use of small and efficient optical fibers.

The integration of fiber optic applications in medical devices is a difficult task because it involves solving such problems as design and selection of fiber, packaging material, cost-effective manufacturing, quality control, and traceable record keeping.

In the last two decades, a variety of fiber optic products have been developed. However, it should be noted, point sensors based on Fabry-Perot interferometers and fiber Bragg gratings (FBGs) are probably the most deployed sensors in medical applications.

Fiber optic products and based on the fiber optic sensors are safe, valuable, highly stable, biocompatible tools for health-monitoring systems and they are amenable to sterilization and autoclaving. By modifying properties such as numerical aperture, core and cladding diameters, and coating material, the fibers can be adapted to different applications.

Why do fiber optic products find so many biomedical uses? Firstly, optical fibers, which used in medical sensors, have a thin polyimide coating to provide a small section and suitability for different kinds of sterilization processes. The temperature resistance of polyimide is difficult to match with other polymer materials. Secondly, the highly desirable parameter of the optical fiber for invasive surgery is tolerance to tight bonds. This allows for movement of the catheter, which winds through veins and arteries, and around organs and bones, on its way to an application area.

Summing up all of the above, the biomedical sensing market represents a lucrative and growing opportunity for fiber optic sensors, particularly for large volumes of disposable probes. The demand for move patient monitoring devices combines with a trend toward minimally invasive surgery, which itself requires a variety of small size that can be incorporated into catheters and endoscopes. There is also an opportunity for fiber optic sensors as EMI-compatible sensors to monitor vital signs during the use of MRI (and related techniques), as well as RF treatments.

Optromix is a fast-growing vendor of fiber Bragg grating (FBG) products line: fiber Bragg grating sensors, FBG interrogators, and multiplexers, Distributed Temperature Sensing (DTS) systems. We create and supply a broad variety of top-notch fiber optic solutions for the monitoring of various facilities all over the world.

If you are interested in Optromix FBG sensors or other fiber optic products, please contact us at info@optromix.com

 

Distributed Sensing Technology for Different Types of Power Cable Monitoring

DTS for power cable monitoringDistributed sensing technology includes distributed temperature sensing, distributed acoustic sensing, and to a lesser degree distributed strain monitoring. Distributed sensing technology has been prevalent in the power and utility sector since the 1980s and the largest area where this technology is commonly used is in the power cabling monitoring. Due to the evaluation of the technology most power cable condition monitoring applications have historically been associated with distributed temperature sensing, but nowadays engineers and scientists are increasingly using distributed acoustic sensing in different applications.

The applications for distributed temperature sensing in power cable monitoring includes:

  • Real-time thermal rating of cables (also known as dynamic cable rating). This has primarily been for buried cables, subsea cables, and cable tunnels, but they’re also have been applications for overhead cables;
  • Hotspot detection;
  • Fire detection for cables.

One of the key factors in the configuration of the distributed temperature sensing systems has been the position of the fiber optic sensing cable in relation to the power cable. At its best, the DTS fiber optic sensing element would be located within the construction of the power cable itself. However, in many cases, the DTS fiber sensing element is attached to the surface of the power cable configuration (or in the vicinity), because of cable construction design or installation issues around splice joints.

There are various areas, types of cables, and applications covered by distributed sensing technology including:

  1. Buried (underground) cable monitoring;
  2. Tunnel cable monitoring;

 

  1. Subsea power cable monitoring (subsea cables are difficult to access and expensive to repair);
  2. Overhead cable monitoring.

Power cable links can be critical assets in project commercial liabilities. Power links, for example, are used to energize offshore installation in the oil and gas pipeline monitoring market. Outages have tangible commercial implications, so that project risks are managed more effectively through better asset life management.

Optromix is a fast-growing seller of such products from the fiber Bragg grating (FBG) line of products: fiber Bragg grating sensors, FBG interrogators, and multiplexers and, of course, Distributed Temperature, Acoustic, and Strain Sensing systems (DTS). Our major goal is to deliver the best quality of fiber optic sensors to our clients. Optromix creates and supplies a broad variety of excellent fiber-optic solutions for the monitoring of various facilities all over the world.

If you would like to purchase Distributed Temperature (DTS), Distributed Acoustic (DAS), or Distributed Strain systems, please contact us: info@optromix.com

 

Distributed Acoustic Sensing (DAS) and Its Future Opportunities for Pipeline Monitoring

DAS for pipeline monitoringFiber optic products are progressively being deployed in many upstream and midstream applications. Nowadays fiber optic equipment is regularly used to provide high bandwidth telecommunications and infrastructure for SCADA (Supervisory Control and Data Acquisition) and is being used more and more to sense pressure, temperature, and strain along buried onshore and subsea pipelines and downhole. Pipeline leakage and intrusion detection continue to be a difficult issue because existing leak detection methods and the traditional methods of guarding pipelines have proven inadequate in the prevention of leaks and deferring third-party intrusion into pipelines and plant facilities.

Distributed Acoustic Sensing (DAS) systems based on fiber optic products are actively used for both sensing and telemetry. Each of the 4,000 independent, simultaneously sampled channels, of which the above systems consist, can be used to detect and locate activity within the vicinity of the pipeline. Also, that channels can be used to classify the type of activity through sophisticated acoustic signal processing.

Distributed Acoustic Sensing systems are very simple systems for providing total monitoring protection over large distances. DAS utilizes sensing cables, that are based on standard fiber optic cables, to obtain a measurement profile along the entire length of the sensing cable at intervals ranging from 3-10 m, depending on the physical size of the system. There is no specialized sensing point required.

There are three basic types of DAS systems utilized for fiber optic measurements:

  • Rayleigh-based systems
  • Raman-based systems
  • Brillouin-based systems

Depending on the frequency of the signal that is derived, this nomenclature is analyzed. DAS systems are ideally suited to monitoring pipelines for the third-party intrusion. Recent developments in the fiber optic products field have also highlighted the ability of the system to track pig runs, provide seismic data during earthquakes, and detect gas leaks in buried pipelines.

Optromix is a fast-growing seller of such products from the fiber Bragg grating (FBG) line of products: fiber Bragg grating sensors, FBG interrogators and multiplexers, and, of course, Distributed Acoustic Sensing Systems (DAS). Our major goal is to deliver the best quality of fiber-optic sensors to our clients. Optromix creates and supplies a broad variety of excellent fiber-optic solutions for the monitoring of various facilities all over the world. The use of Distributed Acoustic Sensing technology in downhole applications (all using the same optical fiber cable) gives a continuum of benefits that are distributed to the flow profiling and the condition monitoring. Distributed acoustic sensing systems can be retrofitted to existing installations of permanent in-well fiber optics-based monitoring systems with the addition of surface equipment. New installations of DAS systems are also possible and have already been performed.

If you are interested in DAS systems and want to learn more, please contact us at info@optromix.com