Articles about Optics and Photonics, Lasers, Fiber Bragg gratings and FBG sensors

Fiber optic sensors detect sleep apnea syndrome

on March 27, 2020

kinga-cichewicz-5NzOfwXoH88-unsplashSleep apnea syndrome is regarded as a risk factor for traffic accidents because it leads to excessive daytime sleepiness. A fiber optic sensor based on optical fibers for sleep apnea syndrome has been tested in a clinical application varying in age from 13 to 78 years. Such a fiber sensor is perfect for preliminary sleep apnea syndrome screening because its respiratory disturbance index corresponds well with the apnea-hypopnea index.

The promising application of such fiber optic sensors includes a screening of patients suffered from the SAS during standard sleep at home. Moreover, the process of downsizing the optical fiber sensors results in the connection between PSG and pulse oximetry. The fiber sensor can be used to examine sleep apnea syndrome in children (2 – 12 years) providing improved pediatric analysis.

It should be noted that the novel fiber optic technology provides more accurate SAS results compared to the traditional sensing system. Additionally, the developed optical fiber sensor is considered to be non-invasive and non-restrictive, also it is quiet and compact, therefore, it is highly useful for the process of SAS screening during conventional sleep at home.

Fiber optic sensors provide a promising application for screening latent patients who suffered from sleep apnea syndrome during normal sleep. Optical fibers in such sensing systems are narrower and wider within several centimeters. Researchers use commercially affordable optical fibers for SAS screening. The operating principle of fiber sensors is based on the measurement of the deviation of output optical power from an optical fiber sheet by micro-bending loss and/or bending loss.

Significant benefits of fiber optic sensing systems include no need for a patient to use any specific clothing or devices because the measurement results are transmitted to a remote place for further analysis and diagnosis. “The deviation in the output optical fiber power from the POF sheet due to micro-bending loss and/or bending loss caused by the lateral pressure change created by the motion of the person’s chest during respiration is measured.”

Also, the researchers have designed a multi-channel fiber optic sensor and applied it in a hotel, full medical check-up and clinical test in pediatrics. The fiber optic sensing system demonstrated 38/42 42 examinees had  Pro-AHI > 5 and were suspected of sleep apnea syndrome. The fiber sensor has a compact size by it having only 15.3% of the volume of a standard sensing system that allows detecting sleep apnea syndrome. The obtained results show that the fiber optic system is perfect for preliminary SAS screening and monitoring of the respiration and heartbeat of neonates. 

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

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editorFiber optic sensors detect sleep apnea syndrome

How to choose the best fiber optic cable

on March 13, 2020

fiberThe variety of fiber optic cables requires their proper selection, installation, and maintenance to optimize it. Optical fibers are flexible and they allow installing fiber optic probes for remote measurement at numerous points with one device, significantly reducing cost. Moreover, optical fibers matched to the spectroscopic analyzer system enable us to reach optimal performance results.

You should pay careful attention to the following parameters when choosing the right fiber optic cables:

  • The optical wavelength range of application

It is required for the spectroscopic optical fiber generally to be much larger in diameter. The operating principle of fiber cables is based on the total internal reflection of the light. “The core of the optical fiber is typically high purity fused silica surrounded by a higher index of refraction doped fused silica cladding layer.” Herewith, the spectroscopic grade optical fibers are optimized for the wavelengths of application.

  • The diameter of fiber optic cables

Various core diameters of optical fibers are distinguished, for instance, single-mode fiber is about 6 µm in diameter, while multimode optical fiber is up to 1000 µm in diameter. The thing is that huge core fiber costs higher, it has less flexibility and a higher attenuation rate with distance but such optical fiber allows transmitting more light and providing a better signal-to-noise ratio.

  • Environmental conditions

Usually, optical fibers are highly fragile, that is why special protective layers are used to solve this problem. Different environmental conditions need for various protective coatings. Moreover, environmental conditions influence the optical fiber performance in a spectroscopic application. For example, strong sunlight may disturb the optical fiber leading to incorrect results of the analysis. 

  • Required distances for the transmission of the signal

It is necessary to install the analyzer far enough away from the hazardous process to be safe, however, close enough to make the optical fiber run practical from cost and performance points of view because fiber optic cables are quite expensive. Thus, the cost depends on the distance required for the optical fiber significantly if it is installed in a protective conduit. 

  • Installation recommendations

Proper installation of fiber optic cables is recommended for better performance. Also, it is necessary to avoid sharp bends as well as vibrations that can evoke noise in the signal because they are a form of micro-bend losses. The most important thing is the correct termination of fiber cables. For optimal application in spectroscopic applications, the connectors of optical fibers must be polished to perfection, be flat, square-ended and have the correct length.

Optromix is a provider of top quality special fibers and broad spectra optical fiber solutions. The company delivers the best quality special fibers and fiber cables, fiber optic bundles, spectroscopy fiber optic probes, probe couplers and accessories for process spectroscopy to clients. If you have any questions or would like to buy an optical fiber product, please contact us at info@optromix.com

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editorHow to choose the best fiber optic cable

Extreme sound features of fiber laser systems

on March 6, 2020

laser-737441_640Diamond is regarded as a predominantly interesting material for this type of laser system for several main reasons. The thing is that it offers high thermal conductivity that promotes the development of compact fiber laser systems that have such features as high stability and high power. Herewith, such fiber laser has also a much higher level of sound speed compared to other materials. Therefore, new laser systems enable to directly synthesize frequencies in the hard-to-reach millimeter-wave band.

A team of researchers demonstrates that the laser beam light-sound interaction is predominantly strong in diamond, also they develop the first bench-top Brillouin laser system that applies diamond. It should be noted that the result is awesome, the thing is that new fiber laser offers a highly practical technique with a greatly increased range of performance. Compared to previous versions, the laser system with a diamond can operate without having to limit the optical or sound waves in a waveguide to increase the interaction. 

To be more precise, it is easier to scale such fiber laser systems in size, they have much greater flexibility for monitoring the laser beam features as well as increasing power. Diamond opens new possibilities to use the unique features of Brillouin laser systems. Additionally, the fiber lasers result in numerous properties containing laser beam generation with ultra-pure and stable output frequency, the creation of new frequencies, and potentially, laser systems with exceptionally high efficiency.

The researchers confirm that the developed laser technology offers a new way to high powered fiber lasers that are significantly efficient and have unique frequency features, for instance,  low-phase noise and narrow linewidth. Such laser beam features play a crucial role in applications that require the highest standards of noise-free frequency properties, for example, ultra-sensitive detection of gravitational waves or manipulating large arrays of qubits in quantum computers.

Moreover, the diamond in laser systems allows synthesizing very clear frequencies beyond the microwave band. Thus, “as a consequence of the very high speed of sound in diamond—a dashing 18 km/s—the frequency spacing between the input pump laser beam and the laser line is many times higher than in other materials.” It is possible to produce frequencies in the millimeter-wave band (30-300 GHz) employing a technique called photo-mixing. 

Finally, the fiber laser technology quantifies the strength of the light-sound interaction in diamond, a crucial parameter for predicting future design and performance resulting in the creation of a practical tool with over 10 W of laser beam power. Also, it is planned to expand the laser system abilities by offering fiber lasers with higher levels of frequency clarity and laser beam power required to maintain future progress in quantum science, wireless communications, and sensing.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorExtreme sound features of fiber laser systems

High powered fiber lasers: the fiber laser has a fully tunable beam

on February 28, 2020

laser-cut-metal-4373878_640The newly developed high powered fiber laser provides real-time tuning of the laser beam characteristics directly from the output optical fiber using a fiber optic system. Laser systems have become indispensable tools for material processing, production, detection, protection, and scientific applications. 

This success is based on improved laser performance in several areas, including average and peak power, wavelength range, timeline flexibility (pulse duration and frequency, complex signals), efficiency, power stability, long-term reliability, maintenance, and operational requirements costs. 

High powered fiber lasers were especially important for implementing some of these achievements and currently dominate in many areas of industrial production and microprocessing. In addition to the efficiency and reliability inherent in fiber lasers, fiber laser systems generally provide fiber delivery to the processing head, minimizing the load on the fiber optics in free space in the laser and the machine.

The opportunity to tune a laser beam is important, for example, when cutting metal (the largest industrial application), so a low-power beam with relatively high radiation quality provides the highest speed for thin material, but the maximum thickness is limited by the resulting narrow cut, which prevents melt removal. 

A more powerful and more divergent laser beam (lower beam quality) allows cutting a thicker sheet with a corresponding reduction in speed compared to a thin sheet. During welding with high beam quality laser, welds with a “deep penetration channel” are formed, while larger spots with lower laser beam quality create shallow welds in the heat conduction mode, aesthetic welds on thin parts.

Besides, the specific shape of the beam affects the heat transfer and temperature gradients in the workpiece. Unlike a Gaussian beam, a flat-topped laser beam can prevent over or under processing by providing uniform radiation, and ring beams are known to improve processing quality in some applications.

Most laser systems provide the fixed characteristics of the beam. The laser beam can be converted to a different format using refractive or diffractive fiber optic systems. Fiber laser systems with a fixed beam can operate only in a limited range of processes or materials and thus, suffer from reduced productivity or limits. 

Customizable laser beam characteristics would be highly desirable to ensure process optimization and tool versatility. Various approaches have been developed that provide a certain level of beam tuning, including zoom lenses, switchable diffractive optical elements, deformable mirrors, laser beam combiners and (for fiber laser systems with a fiber radiation transport system) optical fiber connectors and switches with a motorized optics. 

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorHigh powered fiber lasers: the fiber laser has a fully tunable beam

Top most powerful laser systems for military use

on February 21, 2020

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Laser beam weapons have long ceased to be an element of sci-fi culture, and every year fiber technology more and more firmly takes its place in the military application. Of course, high-power laser systems that can cut starships and buildings into parts have not yet been invented, but many modern fiber lasers still deserve special attention. We will talk about them today.

 

 

  1. Lockheed Martin company is a manufacturer of a combat laser module whose laser beam power can be increased by simply adding new emitters. In April 2014, the company produced and tested a 60-kilowatt fiber laser for military purposes. Herewith, its installation in the future will be part of the combat HEL MD.
  2. The American company Boeing produces not only aircraft but also laser beam weapons for detecting missiles. The laser system installed on the Boeing YAL-1 aircraft is considered to be a chemical laser that is capable to destroy missiles and mortar shells at a distance of up to 1.5 km, even in challenging weather conditions.
  3. Fiber laser Design Bureau of Precision Engineering named. Nudelman is a weapon designed to deactivate optical devices and manpower of the enemy. The laser system operates as a scanner: the laser beams emitted in a spectrum invisible to the human eye scan a potentially dangerous area. As soon as an enemy optical device enters the field of view of a fiber laser system, it is hit by a laser. It should be noted that such a system can strike not only the optics themselves but often the eyes of the observer.
  4. Another creation of Boeing is designed to destroy drones, which have become increasingly popular over the past couple of years. A compact laser module offers the ability to make damage on individual parts of an unmanned module (which can be useful if the enemy device does not need to be destroyed but captured), although it can only be installed on fixed surfaces.
  5. The Israeli laser system made by Rafael Advanced Defense Systems was created with the aim of hitting artillery shells in flight. It is capable of destroying short-range missiles, mortar mines and shells using a laser beam. This fiber laser can be used against ammunition at a distance of up to 7 kilometers.

Devices emitting laser beams are used mainly against high-speed shells or optical systems of the enemy. Thus, a laser system is one of the most reliable ways to bring down an enemy rocket or mine while still approaching, which allows negating its damaging effects. However, the use of laser systems as a mass attack weapons is just around the corner – few devices can be compared in strength to powerful emitters, and as soon as humanity can solve the problem of a reliable source of energy that will feed the machines in the field, a new era of military technology will begin.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorTop most powerful laser systems for military use

Fiber lasers fight with greenhouse gases

on February 14, 2020

global-warmingA team of researchers from Switzerland has developed a detecting system consisted of a conventional fiber laser and a photonic chip that allows tracking greenhouse and other gases by the application of a mid-infrared light source. The team uses a commercially affordable fiber laser system and combined it with a waveguide chip to surely emit laser beam lightwaves in the MIR spectrum.

It should be noted that the researchers claim that the developed laser system based on a new MIR laser beam light source enables them to determine not only greenhouse and other gases but also molecules in a person’s breath. The thing is that the used fiber laser produces light in a specific wavelength range.

The operating principle of the fiber laser system is based on the laser beam that “is directed through a waveguide measuring 1 μm (0.001 mm) across and one-half mm in length. The waveguide can alter the frequency of the light as it passes through.” Herewith, several key aspects of the laser system’s design were improved, among them are the waveguide geometry and material and the wavelength of the original laser beam source.

Thus, the researchers obtain a fiber laser system that is regarded as simple, yet efficient and reliable. Also, it becomes possible to adjust the wavelength of the laser beam light by tuning the geometry of the waveguide. The laser system is considered to be a turnkey, highly efficient, compact MIR laser beam source that provides power levels sufficient for spectroscopy applications. 

The system has been already tested on the detection of acetylene, a colorless and highly flammable gas, by absorption spectroscopy. The thing is that the fiber laser emits laser beam light in the MIR spectrum, saving 30% of the original signal strength. For instance, the waveguides pumped with a 2-μm fs fiber laser succeded a spectroscopic spectral region in the 3- to the 4-μm range, with up to 35% power conversion and mW-level output powers.

The researchers confirm that the developed fiber laser system sets a new benchmark for efficiency. Moreover, it is the first fully-integrated spectroscopic laser beam source resulting in no need for the laborious process of accurately aligning all the components in a standard laser system.

Finally, it was challenging to transport previous IR fiber laser systems for application since they include complex, damage-prone hardware. Modern laser systems can promote the development of additional miniaturized MIR technologies that have a wavelength range that scientists rarely get to work with. Additionally,  now the researchers have the opportunity to see on-chip detectors that is possible to be easily carried out into the field.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorFiber lasers fight with greenhouse gases

Temperature control is crucial for the fiber laser industry

on February 7, 2020

laser-737441_640Thermal stability plays a crucial role in industrial laser systems. Thus, the developers and manufacturers of fiber lasers have to design them to provide accurate heat regulation because inappropriate temperature control can lead to systemic or catastrophic consequences. The thing is that fluctuating temperatures significantly influence the capabilities of fiber laser systems and their lifespan, as well as production outcomes and customer satisfaction.

To be more precise, in the case of low-temperature control (when electronics are not being cooled properly), the risk of premature failures on laser systems increases. Numerous fiber lasers have water-cooled systems (the chiller), and the laser stops operating when any of those components go down. New chiller technologies have been developed to produce a more reliable chiller that fiber laser manufacturers can confidently install into all their systems.

The industry of chilling systems is considered to develop with the demands of the fiber laser industry. “Having a chiller that has the right heat removal, along with excellent stability and a level of quality and maintenance-free operation, is absolutely essential in keeping that fiber laser system up and running, so the customer’s making parts.” And power stability of laser systems is highly important for their reliable operation.

An ineffective chiller is going to have a great impact on a fiber laser with power stability. Additionally, it can influence the laser beam profile that can transform or warp things. In the case of water temperature increase, metal components of laser systems can be moving slightly more than it is required, and it can lead to the motion of the laser beam resulting in higher pointing instability.

The benefits of modern chilling systems for fiber laser systems include:

  • high quality;
  • less downtime;
  • ease of use.

Therefore, such innovations are required and vital in the evolution of the fiber laser industry. Some customers would not like to apply laser systems because of their maintenance that is regarded as the number one reason for failure. Nevertheless, now the problem is solved by a self-changing filter, due to which it is changed for up to two years.

New fiber laser technologies allow developing a user-friendly recirculating chiller for various applications. Today it is possible to calculate the ideal pump, fluid, and power capacity for the chiller in fiber laser systems. Besides, the developers can produce a chiller considering your budget, herein, it will offer the highest value for customers.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorTemperature control is crucial for the fiber laser industry

Annual laser market review and forecast 2020

on January 31, 2020

growthAlthough at uneven rates, different fiber laser markets continue to enlarge fighting a slowdown in manufacturing and an uncertain political climate. The thing is that the 2019 year was challenging for numerous segments of laser system markets. Fiber laser manufacturers faced challenging economic and political influences and also experienced the impact of trade barriers and tariffs.

It should be noted that some fields of laser applications or types of laser systems were affected, while other fiber laser systems succeeded and look even better for the future. The thing is that every segment of the laser market differs from each other, consequently, it has its way. The experts claim that the overall annual estimated revenue growth is predicted to increase by 1.3% in 2019. Therefore, the total revenue of the laser system market is expected to achieve about $15 billion in 2019.

The main segments of laser markets are the following:

  • Materials Processing and Lithography when laser technology is applied for various types of metal processing. For instance, welding, cutting, annealing, drilling. Additionally, such fiber lasers are useful for semiconductor and microelectronics manufacturing, marking of all materials, and other materials processing.
  • Communications and optical storage that consist of laser system diodes employed in such spheres as telecommunications, data communications, and optical storage applications, including pumps for optical fiber amplifiers.
  • Scientific research and military – fiber laser systems for fundamental R&D. To be more precise, what is meant here is “universities and national laboratories, and new and existing military applications, such as rangefinders, illuminators, infrared countermeasures, and directed-energy weapons research.”
  • Medical and aesthetic areas where fiber lasers find their applications in ophthalmology, surgical, dental, therapeutic, skin, hair, and other cosmetic uses.
  • Instrumentation and fiber optic sensors where laser systems operate inside biomedical tools, analytical devices (for example, spectrometers), wafer and mask inspection instruments, metrology devices, levelers, optical mice, gesture recognition, fiber lasers for LIDAR barcode readers, and other fiber sensors.
  • Entertainment, displays, and printing. The segment uses laser systems for performing light shows, games, digital cinema, front and rear projectors, pico projectors, and laser pointers. Herewith, laser technology for commercial pre-press systems and photofinishing remain popular alongside with standard laser printers for consumer and commercial applications.

Optromix is a fast-growing fiber laser manufacturer and a vendor of optical fiber sensors and optical monitoring systems. The company offers fast turnkey solutions and creates sophisticated fiber laser systems for special purposes. Optromix uses only its technologies and develops a broad variety of fiber lasers. If you have any questions or would like to buy a laser system, please contact us at info@optromix.com

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editorAnnual laser market review and forecast 2020

Laser beam diodes create deep-UV light

on January 24, 2020

laserbeamA team of scientists from Japan has manufactured a laser beam diode that allows emitting deep-ultraviolet light. To be more precise, the developed laser system can produce the shortest laser beam wavelength in the world, it is only 271.8 nm under pulsed current injection at room temperature.

It should be noted that previous versions of similar fiber lasers succeeded to achieve emissions only down to 336 nm. The potential applications of the new laser system include disinfection in health care, treating skin conditions, for instance, psoriasis, and analyzing gases and DNA.

The base of the fiber laser system is made of a high-quality aluminum nitride (AlN) substrate that enables to escape the limitations connected with lower quality AlN. The thing is that the AIN quality is considered to influence the efficiency of a fiber laser diode’s active layer in converting electricity into laser beam light energy.

The team confirms that a quantum well separates p-type and n-type layers in the laser system. The operating principle of the developed fiber laser is based on “electric current that is passed through a laser beam diode, and positively charged holes in the p-type layer and negatively charged electrons in the n-type layer flow toward the center to combine, releasing energy in the form of photons.”

Thus, the scientists have developed the quantum well for the fiber laser so that it could produce deep UV light. The p- and n-type layers consist of aluminum gallium nitride (AlGaN). Herewith, every side of the p- and n-type layers in the laser system are surrounded by cladding coatings made of aluminum gallium nitride as well. The cladding is produced by using the process of doping.

Doping is regarded as a way that changes a material’s properties. The team also claims that the aluminum gradient of laser beam diodes increases the flow of positively charged holes. Finally, it was discovered that the technique of the polarization doping of the p-side cladding layer implied that a pulsed electric current of “remarkably low operating voltage” of 13.8 V in the fiber laser system was required for the emission of the UV wavelength.

Nowadays the team of scientists plans to perform advanced joint research to reach continuous room temperature deep-UV lasing for the production of UV-C semiconductor laser system products that can greatly improve the current benefits leading to the appearance of new promising applications in various areas.

If you are looking for a compact highly-efficient laser system, the Optromix company is ready to manufacture it. Optromix is a manufacturer of laser systems, optical fiber sensors, and optical monitoring systems. We develop and manufacture a broad variety of fiber lasers, high powered fiber lasers, and other types. We offer simple laser products, as well as sophisticated fiber laser systems with unique characteristics, based on the client’s inquiry. 

Moreover, our fiber lasers are exceptionally light and compact and can be embedded in other devices or used in mobile applications. Our company offers single-mode Erbium lasers and Ytterbium lasers as well as single-frequency fiber lasers (similar to DFB lasers), wavelength-tunable fiber lasers systems, and unique DUV fiber laser system

We manufacture laser modules using our technologies based on the advanced research work and patents of the international R&D team. Laser processes are of high quality, high precision, easily-automated manufacturing solutions that provide repeatability and flexibility. If you have any questions or would like to buy a fiber laser system, please contact us at info@optromix.com

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editorLaser beam diodes create deep-UV light

Portable fiber laser favors better fiber optic sensors

on January 17, 2020

vividA Chinese team of researchers has created a new twist on fiber optic sensors that promote the development of a smart flexible photoacoustic imaging technique, which is regarded as a way to enlarge new applications in portable devices, instrumentation, and medical diagnostics.

The operation of the new ultrasound sensor is based on fiber lasers that rely on fiber optic technology to manufacture fiber sensors for photoacoustic imaging. To be more precise, these fiber laser systems apply fiber optic ultrasound determination, utilizing the acoustic effects on laser beam pulses via the thermoelastic effect (temperature changes).

The thing is that traditional fiber optic sensors trace very weak signals due to their high sensitivity via phase measurement. Herewith, this type of fiber sensors can be employed in military purposes to find low-frequency (kilohertz) acoustic waves. Nevertheless, they provide weak operation for “ultrasound waves at the megahertz frequencies used for medical applications because ultrasound waves usually propagate as spherical waves and have a very limited interaction length with optical fibers”.

It should be noted that the main application of the novel fiber sensors is medical imaging, herein, they offer better sensitivity than the piezoelectric transducers in use today. Components of a special ultrasound fiber optic sensor include a portable fiber laser set in the 8-micron-diameter core of a single-mode optical fiber. A standard length of the fiber optic system is only 8 millimeters. 

The team uses two highly reflective fiber Bragg grating mirrors written into the fiber core to achieve optical feedback to manufacture the fiber laser. Then they dope the optical fiber with ytterbium and erbium to result in efficient optical gain at 1,530 nanometers. Additionally,  a 980-nanometer semiconductor laser operates as the pump laser.

The applications of such fiber laser systems with a kilohertz-order linewidth (the width of the optical spectrum) can include their use as fiber sensors, so they provide a high signal-to-noise ratio. Also, ultrasound detection takes advantage of the combined methods because side-incident ultrasound waves spoil the optical fiber, modulating the laser beam frequency.

The fiber optic sensors based on fiber lasers are highly promising for application in photoacoustic microscopy. The team applies a 532-nm nanosecond pulsed laser to illuminate a sample and excite ultrasound signals leading to a photoacoustic image of the vessels and capillaries. Moreover, it is possible to use the fiber optic system for structural imaging of other tissues and functional imaging of oxygen distribution by employing other excitation wavelengths.

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

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editorPortable fiber laser favors better fiber optic sensors