Bend-insensitive bismuth-doped P2O5-SiO2 glass core fiber for a compact O-band amplifier

Firstov, S. V.; Khegai, Aleksandr; Riumkin, Konstantin; Ososkov, Yan; Firstova, Elena; Melkumov, Mikhail; Alyshev, Sergey; Evlampieva, Elena; Исхакова, Л. Д.; Лобанов, А. С.; Khopin, V. F.; Абрамов, А. Н.; Yashkov, Mikhail V.; Guryanov, A. N.

doi:10.1364/ol.389117

Cited by 15 publications

(8 citation statements)

References 15 publications

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“…The shapes of the gain spectra obtained are similar to the best published results. This result, providing extremely important advantage of compactness, was expected because the effect of the macrobending loss in the active fiber is negligible as it was shown in 17 . In the case of the bi-directional pumping configuration, the gain spectrum is clearly narrower that is explained by the insertion loss due to an additional fused WDM.…”

Section: Resultsmentioning

confidence: 64%

“…1b. In our previous paper 17 , it was shown that this fiber has an excellent waveguide stability in the spectral region 1300-1400 nm even at a small bending radius of ≈1.5 cm. Thus, this approach can be used to produce a singlemode Bi-doped fiber with a smaller core diameter that is perspective for reducing the saturation power.…”

Section: During Last Decades There Has Been Considerable Interest In mentioning

confidence: 87%

“…A bismuth-doped phosphosilicate fiber preform was fabricated in-house using the conventional modified chemical vapor deposition (MCVD) technique. Detailed information about the fabrication process of this preform can be found in 17 . A single-mode bismuth-doped fiber was obtained from the fabricated preform by the drawing process with a rate of 10 m/min.…”

Section: Methodsmentioning

confidence: 99%

“…In paper 17 , we fabricated and investigated a depressed cladding Bi-doped phosphosilicate glass-core fiber with low macrobending loss as a promising gain medium for a compact O-band amplifier. In this paper, we report results regarding the characterization of the BDFA based on this type of fibers using various pumping configurations.…”

Section: During Last Decades There Has Been Considerable Interest In mentioning

confidence: 99%

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Compact and efficient O-band bismuth-doped phosphosilicate fiber amplifier for fiber-optic communications

Firstov

Khegai

Kharakhordin

et al. 2020

Sci Rep

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During last decades there has been considerable interest in developing a fiber amplifier for the 1.3-$$\upmu $$μm spectral region that is comparable in performance to the Er-doped fiber amplifier operating near 1.55 $$\upmu $$μm. It is due to the fact that most of the existing fiber-optic communication systems that dominate terrestrial networks could be used for the data transmission in O-band (1260–1360 nm), where dispersion compensation is not required, providing a low-cost increase of the capacity. In this regard, significant efforts of the research laboratories were initially directed towards the study of the praseodymium-doped fluoride fiber amplifier having high gain and output powers at the desired wavelengths. However, despite the fact that this type of amplifiers had rapidly appeared as a commercial amplifier prototype it did not receive widespread demand in the telecom industry because of its low efficiency. It stimulated the search of novel optical materials for this purpose. About 10 years ago, a new type of bismuth-doped active fibers was developed, which turned out to be a promising medium for amplification at 1.3 $$\upmu $$μm. Here, we report on the development of a compact and efficient 20-dB (achieved for signal powers between $$-40$$-40 and $$-10$$-10 dBm) bismuth-doped fiber amplifier for a wavelength region of 1300–1350 nm in the forward, backward and bi-directional configurations, which can be pumped by a commercially available laser diode at 1230 nm with an output power of 250 mW. The compactness of the tested amplifier was provided by using a depressed cladding active fiber with low bending loss, which was coiled on a reel with a radius of 1.5 cm. We studied the gain and noise figure characteristics at different pump and signal powers. A record gain coefficient of 0.18 dB/mW (at the pump-to-signal power conversion efficiency of above 27$$\%$$%) has been achieved.

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Section: Resultsmentioning

confidence: 64%

Section: During Last Decades There Has Been Considerable Interest In mentioning

confidence: 87%

Section: Methodsmentioning

confidence: 99%

Section: During Last Decades There Has Been Considerable Interest In mentioning

confidence: 99%

See 2 more Smart Citations

Compact and efficient O-band bismuth-doped phosphosilicate fiber amplifier for fiber-optic communications

Firstov

Khegai

Kharakhordin

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Phase and group refractive indices of the fundamental mode in optical fibers are key parameters for accurate design and characterization of optical systems in such fields as telecommunications, laser technology, nonlinear phenomena, metrology or sensors. The two indices can be calculated from measurements of the index profile in the cross section of the fibers [1] or of fiber the preforms [2]. These interferometric or diffractive techniques require special calculation software since actual fibers do not have an exact a step index profile and, what is more, the index profile is measured with reference to a matching index liquid [3,4], which imposes a limit to the accuracy of results.…”

Section: Introductionmentioning

confidence: 99%

Measurement of phase and group refractive indices and dispersion of thermo-optic and strain-optic coefficients of optical fibers using weak fiber Bragg gratings

et al. 2021

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In this work we report on the measurement, with record accuracy, of the absolute modal effective refraction index (phase index) of single mode optical fibers by using Bragg gratings. We also demonstrate a new method to measure the group index of the fibers from the gratings Bragg wavelength. We present as well the characterization of the thermo-optic and strain-optic coefficients as a function of the wavelength, the values we have obtained are the closest to those of the pristine fiber measured with gratings technology so far. The phase index is measured with a set of gratings in the wavelength range from 1509 nm to 1563 nm and the group index is obtained from the wavelength dependence of the phase index. Very weak gratings with reflectivity down to 10 -3 have been used in order to minimize the perturbation of the pristine fiber. Results are presented at a temperature of 22 0 C and zero strain after preliminary calibration of the thermo-optic and strain-optic coefficients as a function of the wavelength. Accuracies better than 3×10 -5 and 7×10 -4 have been achieved for the phase and group indices, respectively. It is also shown that the main source of error relates to the uncertainty in pitch of the phase masks used for gratings inscription. The technique is useful for testing different kinds of fibers including telecommunication, amplifying, and polarization maintaining.

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Regulation of bismuth valence in nano-porous silica glass for near infrared ultra-wideband optical amplification

Zhang

Wang

Liu

et al. 2021

Ceramics International

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Bend-insensitive bismuth-doped P₂O₅-SiO₂ glass core fiber for a compact O-band amplifier

Cited by 15 publications

References 15 publications

Compact and efficient O-band bismuth-doped phosphosilicate fiber amplifier for fiber-optic communications

Compact and efficient O-band bismuth-doped phosphosilicate fiber amplifier for fiber-optic communications

Measurement of phase and group refractive indices and dispersion of thermo-optic and strain-optic coefficients of optical fibers using weak fiber Bragg gratings

Regulation of bismuth valence in nano-porous silica glass for near infrared ultra-wideband optical amplification

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