Effects of elevated temperature hydrogen exposure on short‐wavelength optical losses and defect concentrations in germanosilicate optical fibers

The conception of main role of the lattice pitch value in bend-induced short-wavelength optical losses is presented. There is shown that creation of the fiber core by substitution with seven or nineteen central elements leads to the essential expansion of spectral working range in microstructured large core optical fibers.

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Effect of metal coating on the optical losses in heated optical fibers

Technical Physics Letters ◽

10.1134/s1063785009040233 ◽

2009 ◽

Vol 35 (4) ◽

pp. 365-367 ◽

Cited By ~ 5

Author(s):

V. V. Voloshin ◽

I. L. Vorob’ev ◽

G. A. Ivanov ◽

V. A. Isaev ◽

A. O. Kolosovskii ◽

...

Keyword(s):

Optical Fibers ◽

Metal Coating ◽

Optical Losses

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Optical losses due to grating fabrication processes in germanosilicate optical fibers

Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides ◽

10.1364/bgpp.1999.bb7 ◽

1999 ◽

Cited By ~ 2

Author(s):

Dwayne L. LaBrake ◽

Diann A. Sloan ◽

Janies F. Brennan

Keyword(s):

Optical Fibers ◽

Optical Losses ◽

Grating Fabrication

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Strength and Reliability of Metal-Coated Optical Fibers at High Temperatures

MRS Proceedings ◽

10.1557/proc-531-297 ◽

1998 ◽

Vol 531 ◽

Cited By ~ 1

Author(s):

A. S. Biriukov ◽

V. A. Bogatyrjov ◽

V. F. Lebedev ◽

A. A. Sysolyatin ◽

A. G. Khitun

Keyword(s):

Experimental Study ◽

Melting Point ◽

High Temperatures ◽

Optical Fibers ◽

Temperature Effects ◽

Degradation Mechanism ◽

Copper Coating ◽

Mechanical Reliability ◽

Optical Losses ◽

Fiber Degradation

AbstractHermetically metal coated fibers are candidates for applications at high temperatures. To date, various metals with melting point up to 1400 °C have been used to coat fibers by the freezing technique. However, the major problems consist of ensuring mechanical reliability and acceptable optical losses in metal coated fibers at high temperatures. We present an experimental study of the temperature effects at 20 – 1050 °C on the performance of optical fibers with copper coating. Specific fiber degradation mechanism have been revealed

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Two-layer chalcogenide-glass optical fibers with optical losses below 30 dB/km

Quantum Electronics ◽

10.1070/qe1993v023n02abeh002946 ◽

1993 ◽

Vol 23 (2) ◽

pp. 89-90 ◽

Cited By ~ 8

Author(s):

A V Vasil'ev ◽

G G Devyatykh ◽

Evgenii M Dianov ◽

A N Gur'yanov ◽

A Yu Laptev ◽

...

Keyword(s):

Chalcogenide Glass ◽

Optical Fibers ◽

Optical Losses

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Dependence of optical attenuation on radiation wavelength and waveguide geometry in copper-coated optical fibers

EPJ Web of Conferences ◽

10.1051/epjconf/202023811013 ◽

2020 ◽

Vol 238 ◽

pp. 11013

Author(s):

Pavel Cherpak ◽

Renat Shaidullin ◽

Oleg Ryabushkin

Keyword(s):

Optical Fibers ◽

Near Infrared ◽

Optical Loss ◽

Single Mode ◽

Optical Losses ◽

Radiation Losses ◽

Optical Attenuation ◽

Novel Approach ◽

Laser Sources

We demonstrate a novel approach to the determination of optical loss coefficients in metal-coated fibers in a 0.4-1.9 μm wavelength range. It is based on measuring the change of temperature-dependent electrical resistance of the metal coating caused by laser radiation transmitted through the fiber. A number of single-mode and multimode metallized fibers were investigated using several laser sources operating in visible and near infrared ranges. The spectral dependencies of optical losses of copper-coated fibers were experimentally obtained. The region that corresponds to the minimum optical losses is located near 1 μm wavelength. The increase of radiation losses in 1.5-1.9 μm region is much steeper compared to polymer-coated fibers.

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Исследование оптических свойств многомодового кварцевого оптического волокна с отражающей оболочкой из фторированного термопластичного полимера

Журнал технической физики ◽

10.21883/os.2019.09.48206.107-19 ◽

2019 ◽

Vol 127 (9) ◽

pp. 477

Author(s):

А.А. Маковецкий ◽

А.А. Замятин ◽

Д.В. Ряховский

Keyword(s):

Optical Properties ◽

Optical Fiber ◽

Optical Fibers ◽

Scattered Radiation ◽

Fiber Length ◽

Numerical Aperture ◽

Optical Losses ◽

Laser Medicine ◽

Propagation Of Light ◽

Absorption Of Light

Optical properties silica - polymeric optical fiber with a core with a diameter of 430 microns and the reflecting cover 70 microns thick from thermoplastic copolymer of a tetraftoretilen with ethylene (Tefzel brand) are experimentally investigated. The polymeric cover is applied on silica fiber with applicator from polimer melt directly on drowing tower. Optical losses of the fiber, a numerical aperture and its dependence on fiber length are measured. It is established that at propagation of light in fiber its noticeable scattering is observed. It is connected with crystallinity of polymeric cover. Distribution of intensity of scattered radiation along an axis of fiber and an indicatrix of dispersion of radiation by a coating are measured. Relative deposits of dispersion and absorption of light in a cover at the general optical losses of fiber are estimated. The possibility of use of optical fibers of this structure in laser medicine is considered.

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