Influence of hydrogen on the colour center formation in optical fibers induced by pulsed UV-laser radiation. Part 1: all silica fibers with high-OH undoped core

Karlitschek, P.; Hillrichs, Georg; Klein, Karl-Friedrich

doi:10.1016/s0030-4018(98)00409-x

Cited by 24 publications

(17 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These aspects are confirmed by the spectra decomposition. Since the ratio between the composing bands, and in particular those related to the E' center and to the NBOHC, is not constant and depends on the fiber, it can be guessed that the microscopic process of defects generation depends on the specific preparation method and could be affected by hydrogen loading (Devine et al, 2000, Karlitschek et al, 1998. In Fig.…”

Section: Resultsmentioning

confidence: 99%

“…This defect is usually associated to an absorption band peaked at 248 nm (5.0 eV) and gives rise to two emission bands at 460 nm (2.7 eV) and 280 nm (4.4 eV) (Skuja, 1998). The ODC(II) can be induced during fiber fabrication but it is also relevant in relation to the photosensitivity of silica and in connection to fiber photon writing processes (Pacchioni et al 2000;Karlitschek et al, 1998). In this respect, the connection of the ODC(II) with another defect usually named H(I) center is of particular importance due to the use of hydrogen for radiation hardening of fibers.…”

Section: The Physics Of Colour Centresmentioning

confidence: 99%

“…The optical measurements were performed mostly in the UV spectral range as the most effective colour centres are generated there. The EPR measurements were used to detect the presence of the intrinsic point defects E' centers (Devine et al, 2000;Pacchioni et al, 2000), as well as H related paramagnetic point defects typically observed in H loaded fibers (Li et al, 1996;Karlitschek et al, 1998). Finally, the photoluminescence measurements were applied to reveal the presence of oxygen deficient defects (ODC(II)) induced by irradiation (Skuja, 1998;Skuja et al;.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Irradiation Effects in Optical Fibers

Sporea¹,

Agnello²,

Mario³

2010

Frontiers in Guided Wave Optics and Optoelectronics

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: The Physics Of Colour Centresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Irradiation Effects in Optical Fibers

Sporea¹,

Agnello²,

Mario³

2010

Frontiers in Guided Wave Optics and Optoelectronics

View full text Add to dashboard Cite

“…The UVenhanced hydrogen loaded and unloaded silica-silica optical fibres are tested. The hydrogen is used to heal irradiation induced damages in silica as shown in deep UV-region below 330 nm wavelengths, after irradiation with deuterium lamps [10], with pulsed excimer-laser or 4th harmonic Nd-YAG lasers [11] and with Gamma-sources [12]. It is expected to see microbending due to the cooldown and irradiation induced transmission degradation.…”

Section: Introductionmentioning

confidence: 99%

Silica–silica polyimide buffered optical fibre irradiation and strength experiment at cryogenic temperatures for 355nm pulsed lasers

et al. 2012

View full text Add to dashboard Cite

A controlled UV-light delivery system is envisioned to be built in order to study the stability properties of superconducting strands. The application requires a wave guide from room temperature to cryogenic temperatures.Hydrogen loaded and unloaded polyimide buffered silica-silica 100 m core fibres were tested at cryogenic temperatures. A thermal stress test was done at 1.9 K and at 4.2 K which shows that the minimal mechanical bending radius for the fibre can be 10 mm for testing (transmission was not measured). The cryogenic transmission loss was measured for one fibre to assess the magnitude of the transmission decrease due to microbending that takes place during cooldown. UV-irradiation degradation measurements were done for bent fibres at 4.2 K with a deuterium lamp and 355 nm pulsed lasers. The irradiation tests show that the fibres have transmission degradation only for wavelengths smaller than 330 nm due to the two photon absorption. The test demonstrates that the fibres are suitable for the cryogenic UV applications with 355 nm and 70 J pulsed lasers. (2012) Published in Cryogenics 52 b s t r a c tA controlled UV-light delivery system is envisioned to be built in order to study the stability properties of superconducting strands. The application requires a wave guide from room temperature to cryogenic temperatures. Hydrogen loaded and unloaded polyimide buffered silica-silica 100 lm core fibres were tested at cryogenic temperatures. A thermal stress test was done at 1.9 K and at 4.2 K which shows that the minimal mechanical bending radius for the fibre can be 10 mm for testing (transmission was not measured). The cryogenic transmission loss was measured for one fibre to assess the magnitude of the transmission decrease due to microbending that takes place during cooldown. UV-irradiation degradation measurements were done for bent fibres at 4.2 K with a deuterium lamp and 355 nm pulsed lasers. The irradiation tests show that the fibres have transmission degradation only for wavelengths smaller than 330 nm due to the two photon absorption. The test demonstrates that the fibres are suitable for the cryogenic UV applications with 355 nm and 70 lJ pulsed lasers.

show abstract

“…Therefore, in order to reduce the decrease of transmission of silica glass due to UV irradiation, or to improved resistance of silica glass to UV, a basic approach [4] is to optimize the high OH core material properties in that way, that high OH content silica core is manufactured in preform fabrication process. A second approach that leads to an improved high OH characteristic is hydrogen loading of fiber [5]. Fibers were loaded with hydrogen yielding H 2 concentrations in the order of 10 19 cm -3 .…”

Section: Introductionmentioning

confidence: 99%

Improved silica-core fibers in the UV transmission

Guo

Chen

2005

SPIE Proceedings

View full text Add to dashboard Cite

Optical fibers for UV transmission have been under intensive development for medical, industrial and other applications during the past several years. Because of this high-speed growth, the problems associated with the damage and transmission properties of silica fibers in the UV region need to be deeply solved. In this paper, in order to make silicacore fibers with excellent transmission in a UV spectral region, an improved silica-core fiber is fabricated by a new fabrication technology of UV-transmission fibers. The technology of fabricating a UV fiber using silica glass is based on two effects of previous UV irradiation and heat treatment. The structural defects and color centers are purposefully caused in silica glass by irradiation silica glass preform with UV, then the structural defects and color centers are removed by performing heat treatment in drawing tower during drawing optical fiber process. The defect generation mechanism in the silica optical fibers is investigated in the paper, and these defects termination principle is also developed. Finally, UV fibers have been tested. From these tested results, UV fibers fabricated by proposed technology have reached the level of high characteristics.

show abstract

Influence of hydrogen on the colour center formation in optical fibers induced by pulsed UV-laser radiation. Part 1: all silica fibers with high-OH undoped core

Cited by 24 publications

References 38 publications

Irradiation Effects in Optical Fibers

Irradiation Effects in Optical Fibers

Silica–silica polyimide buffered optical fibre irradiation and strength experiment at cryogenic temperatures for 355nm pulsed lasers

Improved silica-core fibers in the UV transmission

Contact Info

Product

Resources

About