Fiber Optic Sensors favors better in photoacoustic microscopy

Fiber Optic Sensors in photoacoustic microscopyA Chinese team of researchers has created a new twist on fiber optic sensors. It promotes 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 sensor can be employed for 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. The 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.

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CIM Convention & EXPO Conference Montreal, Canada

Founded in 1898, the Canadian Institute of Mining, Metallurgy, and Petroleum (CIM) is the leading technical society of professionals in the Canadian Minerals, Metals, Materials and Energy Industries.

CIM has always maintained three main objectives:

  • to facilitate the exchange of knowledge and technology;
  • to foster networking, professional development, and fraternity;
  • to recognize excellence and outstanding achievements in the minerals industry.

The CIM EXPO is Canada’s largest mining exhibition, covering all areas of mining from exploration to enrichment of minerals mined. The exhibition was attended by 450 companies, primarily Canadian, as well as from the US and Europe. CIM Convention & EXPO Conference took place from April 30 to May 3, 2017, in Montreal, Canada. Over 6,000 mining industry professionals took part in the events at the Palais Des Congrès De Montréal.

Optromix Company was represented by Sergey Ivanov and Gleb Phillin. Our company was attracted by the opportunity to talk with Canadian gold mining companies. The important participants for our company was Agnico Eagle, Richmont, and Teck.

The main goal of the Optromix company was to attract customers, enhance and maintain a positive corporate image. The Canadian Mining Expo is the great opportunity for mining companies who provide important services such as drilling equipment, trucks, health and safety equipment and procedures, mining exploration technology, and more.

TMS 2016 Exhibition, Nashville,Tennessee 15-16 February

The TMS Annual Meeting & Exhibition brings together more than 4,000 business leaders, engineers, scientists, and other professionals and students from around the world. The exhibition is focused on the latest advancements in research of minerals, metals and material fields. The main goal is to promote networking and exchange of technical knowledge that should lead to creating new collaborations, innovations and different solutions in the workplace and in the society. The TMS annual meeting participants discussed various aspects of the metals industry, including materials testing and characterization as well as current and emerging materials. The exhibition held at the Music City Center in downtown Nashville, Tennessee.

CIM Convention & EXPO Conference Montreal, Canada

Founded in 1898, the Canadian Institute of Mining, Metallurgy, and Petroleum (CIM) is the leading technical society of professionals in the Canadian Minerals, Metals, Materials and Energy Industries.

CIM has always maintained three main objectives:

  • to facilitate the exchange of knowledge and technology;
  • to foster networking, professional development, and fraternity;
  • to recognize excellence and outstanding achievements in the minerals industry.

The CIM EXPO is Canada’s largest mining exhibition, covering all areas of mining from exploration to enrichment of minerals mined. The exhibition was attended by 450 companies, primarily Canadian, as well as from the US and Europe. CIM Convention & EXPO Conference took place from April 30 to May 3, 2017, in Montreal, Canada. Over 6,000 mining industry professionals took part in the events at the Palais Des Congrès De Montréal.

Optromix Company was represented by Sergey Ivanov and Gleb Phillin. Our company was attracted by the opportunity to talk with Canadian gold mining companies. The important participants for our company was Agnico Eagle, Richmont, and Teck.

The main goal of the Optromix company was to attract customers, enhance and maintain a positive corporate image. The Canadian Mining Expo is the great opportunity for mining companies who provide important services such as drilling equipment, trucks, health and safety equipment and procedures, mining exploration technology, and more.