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News: The best of Russian Science and Technology
Under supervision of professor Vladimir M. Lipunov

01.10.2008
17:58

THE DAYS OF SAINT PETERSBURG PHILOSOPHY - 2008

30.06.2008
18:37

Philosophy of Mathematics: Actual Problems

18.06.2007
12:13

MASTER Team Science Release: Discovery of the Black Hole Ergosphere?

24.10.2006
10:50

The International Conference "The International Conference"

29.03.2004
15:54

New domestic processor MCST-R500

09.03.2004
14:00

MASTER is the first russian asteroid factory

25.01.2004
12:51

New Russian "Volga"

17.12.2003
15:00

Russian physicists awarded Nobel Prize

28.11.2003
16:46

Fantastic hetch of Russian physician

11.11.2003
19:33

Aurora on Moscow sky

01.11.2003
11:47

ELEVENTH INTERNATIONAL CONGRESS ON SOUND AND VIBRATION (ICSV11)

16.10.2003
18:58

The first and lonely russian robot-human

06.10.2003
14:40

FRONTIERS OF NONLINEAR PHYSICS

02.10.2003
18:30

MASTER - is the first russian robotic telescope for observations Gamma-Ray Bursts

07.10.2002
14:17

Optical Fiber Sensor at 900 C

    Russian scientists have developed optical fiber sensors which can work under high temperatures. Laboratory specimens can effectively operate under 1000 C while the best foreign sensors lose their efficiency at temperatures as high as 300 - 400 C. A new-type fiber-optic waveguide has been developed on the basis of unique chemical technologies dealing with plasma. To make optical fiber structured in these waveguides, nitrogen is used instead of germanium. Such sensors may be used to solve numerous problems connected with measuring various physical values, for example, temperature, mechanical stresses, pressure. The unique sensor was created in Fiber Optics Research Center at the General Physics Institute of Russian Academy of Sciences (RAS) owing to sponsor support of Business-Unitech company.

    Fiber-optic waveguides made from quartz glass alloyed with nitrogen have shown a number of unique characteristics. Their ability to counteract ionizing radiation exceeds that of standard fiber by an order of magnitude. Therefore, innovated fibers can be widely used in aircraft industry,in space-system engineering, at atomic stations and other units which are of possible radiation danger. They can also be successfully used in medicine jointly with laser, ultrasonic and ultra-high-frequency devices where sensors of other kinds can hardly be helpful.

    Also, the unique heat resistance of fibrous sensors and their safety in explosions guarantees ceaseless monitoring while measuring temperature and other parameters in petroleum and gas industry, in turbines and engines, drying and heating installations as well as in numerous furnaces. The sensors are absolutely insusceptible to electromagnetic fields, therefore they can be used in technological processes where interference is great because of electromagnetic noise. Under such conditions, it's almost impossible to employ other means of control. One more advantage of the sensors is that one can participate in monitoring paremeters of a potentially dangerous object and remain at a safe distance from it (as far as a few kilometers).

    Similar tasks which are elaborated in foreign laboratories (for example, project Optoplan AS) consume much more funds exceeding millions of dollars. Foreign high-temperature tentative sensors, however, become invalid at temparatures as high as 300 - 400 C, and the best industrial samples do not tolerate temperatures more than 200 C.

    Pioneering fiber-optic sensors targeted for commercial production are in progress now owing to sponsor Business-Unitech. These will rest on the samples available and are assumed to be high thermally stable. The sensors are destined to measure temperatures, mechanical stresses, pressures, etc. The first bargain has been concluded this year: SIMENS company has bought a pilot lot for measuring temperatures in industrial turbines.

    The most impressive though is an opportunity to create, on basis of innovated fiber technology, various fiber-optic devices and a number of unique fiber-optic elements which have no analogues in the world.

    For the great achievements in the fiber optics, the team of developers were awarded by a yearly Russian National Award.
    http://www.cnews.ru
    Translated by Natalya Lipunova

10.09.2002
13:24

Inflatable Equipment for Rescue and Descent

24.05.2002
17:16

Isotopically Pure Materials from Russia

16.04.2002
19:31

Hothouse Catastrophe.

12.04.2002
13:23

First Man in Space - 41 Years Ago Sharp!

27.03.2002
22:20

SPACE LIFE in METEORITES?

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Email:lipunov@sai.msu.ru

 

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