GeO2-rich low-loss single-mode optical fibers

Guryanov, A. N.; Salganskii, M.Y.; Khopin, V. F.; Bubnov, M M; Likhachev, Mikhail E.

doi:10.1134/s0020168508030126

Cited by 10 publications

(4 citation statements)

References 19 publications

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“…In a series of experiments, researchers at FORC, Russia fabricated several GeO 2 doped fibers with concentrations varying from 51 mol % to 97 mol % [10][11][12]. The losses were lower than 120dB/km at 1.9-2 μm for all of these fibers.…”

Section: Introductionmentioning

confidence: 99%

Record power, ultra-broadband supercontinuum source based on highly GeO_2 doped silica fiber

Jain¹,

Sidharthan²,

Moselund³

et al. 2016

Opt. Express

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Abstract:We demonstrate highly germania doped fibers for mid-infrared supercontinuum generation. Experiments ensure a highest output power of 1.44 W for a broadest spectrum from 700 nm to 3200 nm and 6.4 W for 800 nm to 2700 nm from these fibers, while being pumped by a broadband Erbium-Ytterbium doped fiber based master oscillator power amplifier. The effect of repetition frequency of pump source and length of germania-doped fiber has also been investigated. Further, germania doped fiber has been pumped by conventional supercontinuum source based on silica photonic crystal fiber supercontinuum source. At low power, a considerable broadening of 200-300 nm was observed. Further broadening of spectrum was limited due to limited power of pump source. Our investigations reveal the unexploited potential of germania doped fiber for mid-infrared supercontinuum generation. These measurements ensure the potential of germania based photonic crystal fiber or a step-index fiber supercontinuum source for high power ultra-broad band emission being by pumped a 1060 nm or a 1550 nm laser source. To the best of our knowledge, this is the record power, ultra-broadband, and all-fiberized supercontinuum light source based on silica and germania fiber ever demonstrated to the date. "Generating tunable optical pulses over the ultrabroad range of 1.6-2.5 μm in GeO 2 -doped silica fibers with an Er:fiber laser source," Opt.

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Section: Introductionmentioning

confidence: 99%

Record power, ultra-broadband supercontinuum source based on highly GeO_2 doped silica fiber

Jain¹,

Sidharthan²,

Moselund³

et al. 2016

Opt. Express

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“…A fiber preform about 20 cm in length was fabricated using the standard MCVD method [15][16][17][18][19][20][21][22]. Seven GeO 2 -SiO 2 layers were successively deposited onto a high-quality synthetic fused silica substrate tube Heraeus ® F300 20 × 2mm, which after consolidation was jacketed by the 27 × 10mm tube resulting in approximately a D pref = 18 mm preform outer diameter.…”

Section: Fiber Preform Fabrication and Characterizationmentioning

confidence: 99%

“…The lack of polishing agents during the final consolidation stage of the MCVD process left the innermost core layer unprotected from GeO 2 evaporation, and above 70% a deep gap appeared. One of the consequences of this are tensile stresses, gradually downshifting the refractive index in the area around the central gap [16]. Two GeO 2 -SiO 2 layers formed a diffusive transition zone between the core and the cladding, also producing a certain stress influence on the surrounding regions.…”

Section: Fiber Preform Fabrication and Characterizationmentioning

confidence: 99%

Phase-matching of the HE₁₁and HE₁₃modes of highly doped GeO₂–SiO₂fiber waveguides at 1596 nm and 532 nm, respectively, for triple-photon generation

et al. 2016

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We theoretically investigate a phase-matching (PM) between the HE11 and HE13 modes at wavelengths 1596 and 532 nm, respectively, of a real germania-silica fiber waveguide, whose preform was made by MCVD technology. For several measured refractive index profiles of the fiber preform, the corresponding waveguide diameters, providing homogeneous PM, both with modal dispersion and power characteristics, are calculated. The PM parameters obtained for the real fiber are compared to that calculated for a standard step-index fiber model.

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“…Davey et al [10], Gur'yanov et al [11] and Bubnov et al [12] suggested that the dip in the index profile adds to the losses in high GeO 2 -doped fibers.…”

Section: Introductionmentioning

confidence: 97%

Stress-Loss Correlation and Dispersion Control in Highly GeO₂-Doped Fibers

Sidharthan

Yoo

et al. 2016

IEEE Photon. Technol. Lett.

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We report a fabrication route to achieve highly GeO 2 -doped silica fibers with GeO 2 molar concentration as high as 74% using the conventional modified chemical vapor deposition (MCVD) process. The dependence of background loss on fiber frozen-in stress in these highly doped fibers is investigated. A central dip of refractive index in the core is found to introduce stress variation, and contribute to the background loss. Dispersion control and supercontinuum generation in 2.1-2.8-µm region using the 74-mol% fiber are also presented.Index Terms-Optical fiber fabrication, optical fiber materials, optical fiber measurements.

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GeO2-rich low-loss single-mode optical fibers

Cited by 10 publications

References 19 publications

Record power, ultra-broadband supercontinuum source based on highly GeO_2 doped silica fiber

Record power, ultra-broadband supercontinuum source based on highly GeO_2 doped silica fiber

Phase-matching of the HE₁₁and HE₁₃modes of highly doped GeO₂–SiO₂fiber waveguides at 1596 nm and 532 nm, respectively, for triple-photon generation

Stress-Loss Correlation and Dispersion Control in Highly GeO₂-Doped Fibers

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GeO2-rich low-loss single-mode optical fibers

Cited by 10 publications

References 19 publications

Record power, ultra-broadband supercontinuum source based on highly GeO_2 doped silica fiber

Record power, ultra-broadband supercontinuum source based on highly GeO_2 doped silica fiber

Phase-matching of the HE11and HE13modes of highly doped GeO2–SiO2fiber waveguides at 1596 nm and 532 nm, respectively, for triple-photon generation

Stress-Loss Correlation and Dispersion Control in Highly GeO2-Doped Fibers

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Phase-matching of the HE₁₁and HE₁₃modes of highly doped GeO₂–SiO₂fiber waveguides at 1596 nm and 532 nm, respectively, for triple-photon generation

Stress-Loss Correlation and Dispersion Control in Highly GeO₂-Doped Fibers