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

Why it is necessary to develop fiber optic technology

on May 24, 2019

Lighted Purple Fiber Optic Lamp (1)Fiber optic technology is highly promising now, optical fibers make a great contribution to science and offer the best medical equipment, improved environmental monitoring, more media channels – and possibly better solar panels. The fact is fiber optics are considered to be the best at signal transmission without serious loss in the transfer.

Nevertheless, the glass in an optical fiber is good at a wavelength of more or less 3 microns and their efficiency reduces if the wavelength is longer. Thus, sometimes such fiber optic limit causes problems. For example, the near-infrared part of the wave spectrum of optical fibers is applied in the telecommunication area because of its low loss of energy during passing through the glass.

Herewith, if it was possible to use even longer wavelengths, the fiber optic technology would offer new advantages such as better medical diagnoses and more accurate environmental monitoring of airborne gas particles. Also, various media channels could have more space due to longer fiber optic wavelengths because nowadays there is an intense competition where free space transmission normally takes place now.

It should be noted that glass optical fibers are not made of pure glass material, however, a core with other material is required for the good signal transmission. This was quite difficult to achieve, and the fiber optic techniques have continued to develop over the last 50 years. All that time different research teams conducted experiments with optical fiber using a semiconductor core of silicon and gallium antimonide instead of germanium oxide, which is applied in silica fiber optics today.

The use of the gallium antimonide as the core of an optical fiber is highly promising due to its ability to emit the infrared light, but this fiber should be then treated by a laser system to concentrate the antimonide. Therefore, such laser system process can be realized at room temperature in spite of the fact that the laser processing influences the fiber optic core properties.

Silicon material, in its turn, is considered to be the most widely used matter in solar panels. The combination of silicon and oxygen allows using the material both in glass and glass optical fiber cables. Gallium antimonide is more specific material, although it is also used in fiber optic devices in the same composition but not in the same way.

Finally, the newly developed fiber optic technique is based on the distribution of the gallium antimonide throughout the silicon material. This technique of crystal growing is simpler and cheaper than others, herein, the fiber optic technology opens numerous possible applications as well as enables to provide more efficient use of rare resources like gallium.

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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editorWhy it is necessary to develop fiber optic technology

Laser systems for vessel diseases therapy

on May 17, 2019

A team of researchers from Canada offers a new technique of multiphoton photothermolysis to selectively close single blood vessels within the tissue, using a targeted therapy by laser systems. The application of laser technology includes the treatment of different vascular diseases and dysregulated blood vessels, varying from cancers to macular degeneration to port wine birthmarks.

Volume_rendered_CT_scan_of_abdominal_and_pelvic_blood_vessels (1)Such therapy treatment is based on multiphoton absorption using laser systems. The fiber laser device operation applies a targeted laser beam produced by a near-infrared femtosecond fiber laser, herewith, the beam is directed at the center of the necessary vessel.

Thus, the femtosecond laser creates localized heating that distributes to the blood vessel walls and evokes it to destroy. It should be mentioned that it is possible to induce the multiphoton absorption by the laser system only at the focal point with extremely high power density from the laser beam, that is why nearby vessels are in safe.

The femtosecond laser system is considered to be highly promising because it has such an advantage as absorption at the focal point only. Therefore, the fiber laser system allows directing the focal point with a microstructure so it is possible to treat the microstructure very accurately without any adverse effects to the nearby issue.

The researchers developed an optical system that enables imaging, targeting and closing a single blood vessel. They use a 785 nm diode laser in order to image the required blood vessel with the help of reflectance confocal microscopy and to affirm the closure of the blood vessel after its treatment.

Moreover, it should be noted that a powerful Ti: sapphire femtosecond laser tuned to 830 nm is used for the treatment procedure. And the near-infrared light from the fiber laser beam allows making deeper penetration than the visible wavelengths offer for single-photon absorption-based techniques.

The researchers have tested the laser technology on a mouse ear model, and it turns out that single vessels of different sizes, including capillaries and venules, are closed. Thus, the fiber laser device closes blood vessels deep within a tissue while saving superficial blood vessels.

Finally, this fiber laser technique is ideal for selective denaturation of certain vessels while saving other vessels to maintain normal tissue physiology once the disease is treated. Nevertheless, laser technology still requires improvements, for example, in some cases, the vessels could be partially blocked instead of completely closed.

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 own 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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editorLaser systems for vessel diseases therapy

A powerful 10-petawatt laser system is able to vaporize matter

on May 13, 2019

Red_Laser_through_irregular_glass_mj1Laser technology is a highly powerful tool that has numerous applications in different fields. Laser system power resembles the sun’s one but it is pretty weaker. Nevertheless, recently a team of researchers from Romania has developed a laser system with one-tenth of the sun’s power on Earth that is equal to 10 petawatts (PW).

At the present time, this fiber laser is considered to be the most powerful laser ever built, herein, it should be mentioned that the laser system is the most concentrated power on our planet. For example, the previous laser of 1PW was called a Death Star, the new laser system is 10 times as strong compared to laser pointers that are of 0.005-watt for safety in the USA.

The powerful 10PW laser system is able to simply vaporize matter, enlarging new possibilities concerning what happens during a supernova. Another laser application includes the possibility of studying the formation of heavy metals. The researchers believe that laser technology may find potential use in advancing medical research in proton cancer therapy.

Moreover, the laser system can be applied to handle radioactive waste as well as to develop new ways to find and characterize nuclear material enabling security groups to scan, for example, incoming shipping containers for dangerous and illegal contents.

The fact is that over the last decades the power of laser systems and laser modules has enlarged so much that the laws of light-matter interaction change greatly. Thus, such changes allow developing new techniques to produce x-rays, gamma-rays, and highly energetic particles. And these laser technologies, in their turn, can be employed in various scientific fields, whether in medical research or material sciences.

The laser system is established inside a protective chamber that is controlled by the researchers behind a computer. Herewith, the laser uses two systems – high power laser system that produces laser pulses and laser beam transport system that directs the pulses into the required direction with high precision.

It should be noted that a highly controlled environment in air quality and the vibration is required by the whole laser system. Its laser beam could be visible to the human eye and glowing red, despite the fact that it is toward the infrared radiation limit. And the laser beam focus is about 60 cm or a little less than two feet in diameter.

Finally, it is planned that the 10PW laser system will become even stronger by combining two 10 PW lasers to create a device of 1023 watts intensity per square centimeter, a wavelength of 820 nanometers, pulse lengths of 25 femtoseconds compared to the present strength of 1015.

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 own 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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editorA powerful 10-petawatt laser system is able to vaporize matter

Semiconductor laser system opens new possibilities in data transmission

on April 26, 2019

WIFI (1)A group of researchers from the USA succeeded in a record transmission using a common semiconductor laser system for the first time as a radio frequency transmitter. Thus, the researchers presented a laser system that is able to emit microwaves wirelessly, modulate them, and receive external radio frequency signals.

Therefore, this development enlarges possibilities for the creation of novel types of hybrid electronic-photonic devices, and moreover, this kind of semiconductor lasers is highly promising because it leads to the appearance of ultra-high-speed Wi-Fi. It should be mentioned that the research is based on previous work.

According to the research, a quantum cascade laser system produces an infrared frequency comb that can be used for generating terahertz frequencies, wavelengths of the electromagnetic spectrum enabling to transmit data information hundreds of times faster than it is possible to do today using modern wireless platforms.

Moreover, the team discovered that this type of laser systems emits such frequency combs that can be easily applied as integrated transmitters or receivers to efficiently and accurately encode the necessary information. Finally, the researchers were able to find a way to extract and transmit wireless signals from frequency combs produced by the laser system.

Compared to traditional laser systems or laser modules, which allow producing only a single frequency of a laser beam, laser frequency combs create multiple frequencies at one time, evenly located to look similar to the comb teeth. In 2018, it was established that the various frequencies of light from laser beam beat together to produce microwave radiation inside the laser system.

Herewith, the laser system light provokes electrons to vibrate at microwave frequencies, which belong to the communication spectrum. Consequently, it is necessary to encode the required information in the microwave signals and then remove that data from the device, after that the semiconductor laser can be used for Wi-Fi.

The semiconductor laser system includes a dipole antenna for transmitting microwave signals, which were later modulated by the researchers to encode data on the microwave radiation produced by the beating light from the laser beam. Then the microwave signals are radiated out from the laser system with the help of the antenna, and they are received by a horn antenna, filtered and processed by a computer.

The research also allows controlling remotely the semiconductor laser by microwave signals from another device. Herewith, this development remains very promising for wireless communication that still takes a long time while fiber lasers demonstrate great success.

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 own 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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editorSemiconductor laser system opens new possibilities in data transmission

New optical laser system for sound

on April 19, 2019

The cost of optical laser systems has largely grown since the moment of its invention. Herewith, lasers become a subject for which scientists are award Nobel prizes, for example, for optical tweezers development or studying of pulsed laser modules. Nowadays a group of researchers from the USA suggests and presents a totally new phonon laser system –  a laser for sound, based on an optically levitated nanoparticles.

Glass_nanoparticle_suspended_in_an_optical_cavityThe researchers use optical tweezer technology invented by Arthur Ashkin, an American scientist and Nobel laureate for the development of a phonon laser system. It should be mentioned that a phonon is considered to be a quantum of energy associated with a sound wave, at the same time optical tweezers allow testing quantum effect limitation and in isolation and taking away physical interference from the environment.

Thus, the researchers decided to study the mechanical oscillations of nanoparticles that are levitated against gravity by the force of radiation at the focus of an optical laser beam created by a high-quality laser module. The fact is the measuring the position of the nanoparticles by identifying the laser system light it emits, and putting that data information back into the laser beam of the tweezer enables to create a laser-like situation.

In this case, the mechanical vibrations obtain more intensity and fall into ideal process synchronization similar to the electromagnetic waves coming from a traditional optical laser system. Compared to light emerging from the sun or from a light bulb, the laser beam is able to overcome pretty long distance without expanding in different directions due to the synchronization of waves from the laser module.

It should be noted that in conventional fiber laser systems, the attributes of the laser system light output are absolutely dependent on the materials from which such a fiber laser is made. It is significant that in the phonon laser system, this principle is reversed because the movement of the material particles is regulated by the optical feedback.

The potential laser applications are sensing and information processing, taking into an account the fiber laser systems have so numerous and still developing fields of applications. Moreover, the phonon laser system is a highly promising development because it allows studying the fundamental quantum physics, and possibly, the laser module opens new possibilities for the engineering of the famous thought experiment of Schrödinger’s cat that is able to be at two places simultaneously.

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 own 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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editorNew optical laser system for sound

Comparison of CO2 and fiber laser systems for cutting application

on April 12, 2019

Laser_cutting_machineNowadays laser systems in cutting machines are a common device in the world of business, despite the fact that most people may not know it. Actually, laser machines have numerous applications, they are not limited by school uses and small business, herein, laser technology is one of the basic tools in industrial manufacturing because of laser precision and energy efficiency.

There are numerous types of lasers with different specifications, but the most frequently used ones are CO2 lasers and fiber laser systems. At the present time, the differences between CO2 and fiber lasers have provoked confusion in the marketplace as the benefits and drawbacks of two technologies.

CO2 lasers are considered to be highly reliable and easy to use. In addition, CO2 laser systems are powerful enough, so they are able to cut through different materials, for example, plastic, leather, wood and some types of metal. Usually, a traditional CO2 laser employs the infrared part of the light spectrum from its laser beam, that is why the beam is visible to the human eye.

Nevertheless, the main drawbacks of CO2 laser systems are connected with their cutting speed during processing of relatively thin materials, but the cutting speed increases when it comes to processing of thicker materials. Also, it should be noted that compared to fiber lasers systems, CO2 lasers allow leaving a smoother finish.

Indeed, fiber laser cutting machines demonstrate more energy efficiency and high-reliability level than conventional CO2 models do. The fact is that CO2 laser system allows cutting through only some types of metal, whereas fiber lasers are stronger, and they are able to cut through such metals as copper, aluminum, and brass.

Moreover, the cost is an important factor in industrial manufacture. Thus, traditional fiber laser costs are less than half of a CO2’s operating cost. Also, high-quality fiber laser beams offer faster-cutting speeds than CO2 model can provide, consequently, it is possible to do more work at a much faster rate.

Finally, the traditional CO2 laser cutting machine requires almost fifteen minutes of warm-up time before it can be used again, while laser beams from fiber laser machines do not need any warm-up time. Herewith, fiber lasers are safer during its operation.

Optromix Inc., headquartered in Cambridge, MA, USA, is a manufacturer of laser technologies, optical fiber sensors, and optical monitoring systems. We develop and manufacture a broad variety of fiber lasers, СО2 lasers, and other types. We offer simple laser products, as well as sophisticated laser systems with unique characteristics, based on the client’s inquiry.

We manufacture lasers using our own 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 are interested in Optromix fiber laser systems, please contact us at info@optromix.com

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editorComparison of CO2 and fiber laser systems for cutting application

Fiber laser system for air pollution detection

on April 5, 2019

Air pollution remains one of the most serious environmental problems in modern society. That is why its location is highly important for future air treatment. Thus,  a team of scientists from Switzerland has developed a special device for air pollution detection called a simple mid-infrared fiber laser source.

fiber_laser_and_its_working_fiber_in_the_dark

The principle of operation includes the pollution determination both in the air or molecules in someone’s breath. Also, the novel middle infrared fiber laser source allows detecting even greenhouse and other gases that can cause numerous dangerous respiratory and other diseases in people of every age.

Herewith, this fiber laser system has a more compact size of construction than it was before in other systems usually used for similar tasks. The size of such a fiber system is similar to a tiny suitcase consisting of two parts that are a conventional fiber laser and a photonic chip of a few millimeters across.

It should be mentioned that this is the mid-infrared spectrum that is very often required for scientific researches because the wavelength range enables to identify air pollutants and different particles that play a crucial role in the health of the environment and every person.

Nevertheless, it was very difficult to transport such infrared fiber laser systems because their construction includes complex, damage-prone hardware. At the present time, the problem has been solved due to the new laser technology developed by scientists.

The researchers use a commercially available fiber laser and join it to a micrometer waveguide chip. As a result, the combination allows generating light waves in the mid-infrared spectrum. In addition, the team improved the laser system by adding a spectrometer for the demonstration of the light resource ability to identify the presence and concentration of acetylene, a colorless and highly flammable gas.

The laser system operation is based on the compact and reliable fiber laser that creates light in a specific wavelength range. The laser beam is directed through a waveguide. Moreover, the researchers confirm that the fiber laser system or, to be precise, its light wavelength can be even tuned.

Also, it should be noted that this is the first time anyone has created a fully integrated spectroscopic fiber laser source. Therefore, precisely aligning all the components is not required now as it was in a traditional laser system before. This laser technology opens new possibilities for miniaturized mid-IR techniques that can find a potential application in numerous areas.

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 own 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 laser system for air pollution detection

Fiber optics overcome capacity limits

on March 29, 2019

Optical Fiber (1)Fiber optics is a universal material that finds numerous fields of application all over the world, in particular, in the communication area where it is very important optical fiber capacity. The fact is fiber technology has not reached its upper limits yet. And nowadays it is planned to enhance the fiber capacity to 800 gigabits in 2019.

Recently researchers from the USA announced that they have obtained fiber optic capacity of 26.2 terabits per second over the roughly 4,000 mile-long trans-Atlantic MAREA cable. Herewith, they confirm that in the near future their company will improve the optical fiber system, and it will offer data transmission of an 800 gigabit-per-second.

Also, it should be mentioned that the MAREA fiber cable developed almost a year ago enables to transmit 160 terabits of data per second through its eight 20-terabit pairs. And, the researchers tested their improved fiber optic cable which fiber capacity was 20% higher than expected.

Therefore, this optical fiber cable system offers the following advantages:

  • high bandwidth capacity;
  • limited data dispersion and external interference;
  • fast transmission speed;
  • numerous fields of application;
  • low cost;
  • compact size.

It is considered that this fiber technology is able to increase network capacity without requiring new optical cables which cost is pretty high and can achieve hundreds of millions of dollars. This factor can play a crucial role in some countries such as Africa where the number of people, who are online, is still dramatically low.

Moreover, it is also required to increase the bandwidth capacity of fiber cables for data centers. At the present time, the level of fiber optic capacity is good, but it has to be higher. Nevertheless, the capacity of optical fiber cables may reach their limits soon. In other words, if fiber capacity increases, consequently, the reach will be reduced.

These things happen because of noise contamination and efficiency deterioration while the pipe increase. The decision about an 800-gigabit fiber cable will be announced later. Herewith, they say that the principle of fiber operation is based on the use of coherent optical transmission that possible increase the fiber capacity.

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 by an optical fiber product, please contact us at info@optromix.com

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editorFiber optics overcome capacity limits

Vibrational spectroscopy enables to diagnose fibromyalgia

on March 22, 2019

Fibromyalgia (FM) is a common and chronic disease that evokes bodily pain and mental distress. Herewith, its symptoms are similar to those of arthritis, or joint inflammation. That is why it is highly important to differentiate these diseases and a team of scientists from the USA confirms that detailed profiling of the biological content of blood samples by vibrational spectroscopy technology is the solution to the problem.

Canva - Blood, Medical, Attempts, Tube, Diagnostics, Laboratory (1)

The new vibrational spectroscopy method for the analysis was recently presented by a group of scientists from Ohio State University. The principle of its operation is based on the use of energy vibrational pattern of each biological molecule for final detection of biomarkers specific to the fibromyalgia disease.

If the method of vibrational spectroscopy is developed and honed to reproducibility, the process spectroscopy will have the following benefits:

  • possibility to detect specific treatment subsets for fibromyalgia;
  • identification of new aims that differ from each other metabolically.

It should be noted that FM is a difficult-to-diagnose disorder characterized by chronic pain. Nevertheless, most patients mention other symptoms, for example, fatigue, sleep disorder, etc. that can be similar to other medical diseases. Thus, FM diagnosis remains a challenge for doctors, however, environmental and clinical factors are considered to make a great contribution.

The technology of vibrational spectroscopy is traditionally used in numerous medical fields of application, for example, cancer, urology, rheumatology etc. Moreover, vibrational spectroscopy enables to make a quick detailed analysis of complex biological samples, creating an exceptional chemical profile for each sample.

At the present time, the scientists test the potential use of vibrational spectroscopy technique to estimate FM’s distinctive features. Therefore, they examined blood samples from 50 FM patients and compared the results to those of 29 patients with rheumatoid arthritis, 23 with systemic lupus erythematosus, and 19 patients with osteoarthritis.

Using the vibrational spectroscopy method, the scientists could distinguish with 100% efficiency the biological samples according to their corresponding disease. Consequently, vibrational spectroscopy offers a reliable precise diagnostic test for FM differentiation from other syndromes characterized by pain symptoms.

The combination of chemical analysis with vibrational spectroscopy technology demonstrates that protein backbones and pyridine-carboxylic acids are two main component groups that distinguish the different disease samples and detect FM-associated biomarkers.

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 for IR imaging, spectroscopy fiber optic probes, probe couplers and accessories for process spectroscopy to clients. If you have any questions, please contact us at info@optromix.com

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editorVibrational spectroscopy enables to diagnose fibromyalgia

Automotive application of fiber laser systems

on March 15, 2019

Fiber laser marking is a relatively new technology in the automotive industry that lies in the finishing and making of parts no matter their size. Besides the automotive industry, fiber laser systems are highly often used in other types of applications. For example, today fiber lasers are exploited for all types of plastic and metal elements because of their accuracy, precision, and efficiency.

Canva - Person in Welding Mask While Welding a Metal Bar (1)It should be mentioned that not only the manufacture of automotive elements but also the security technology equipment and all types of electronic machines that require to be marked for safety and quality assurance purposes are based on laser system technology.

The fact is the technology of laser system marking differs from the basic imprinting and ink printing by its methods as the principle of its operation is based on the use of special fibers that allow creating a permanent and everlasting image free from the danger of being removed by any solvents.

Moreover, laser fibers have such characteristics as a high level of quality, high contrast marking on elements through the laser beams. Fiber lasers are ideally suited for complicated patterns and shapes that are only produced by accurate computer processing.

The main fields of laser applications include processing of the materials, direct energy weapon manufacturing, telecommunications industry, medicine etc. Herewith, there are different types of fiber laser systems that now are quite popular in the automotive industry for such processes as marking, cutting, engraving etc.

The double clad fiber laser system is a high-power laser that consists of two accurate and measured layers of fiber cladding. This construction enables to provide the ultra-powerful laser beam. Herein, the fiber laser design creates sufficient light confinement in the core and optical pump section all in the little piece of fiber.

The dark soliton fiber laser is not so popular as other fiber lasers because it is a relatively new technology that emits the brightest lasers with focused pulse emission as well, along with the option of single and multiple pulses.

Today the most popular lasers are fiber disk lasers in the automotive industry due to their free cladding of fibers that are not limited, and the fiber core looks like a rope that is bound to itself. The construction is ideal for power functions thanks to the coil strength. Also, fiber disk laser systems are easy-to-use.

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 own 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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editorAutomotive application of fiber laser systems