The Influence of the MCVD Process Parameters on the Optical Properties of Bismuth-Doped Phosphosilicate Fibers

Khegai, Aleksandr; Afanasiev, Fedor; Ososkov, Yan; Riumkin, Konstantin; Khopin, V. F.; Лобанов, А. С.; Yashkov, Mikhail V.; Firstova, Elena; Абрамов, А. Н.; Melkumov, Mikhail; Guryanov, A. N.; Firstov, S. V.

doi:10.1109/jlt.2020.3008536

Cited by 29 publications

(9 citation statements)

References 20 publications

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“…For bismuth and phosphorous co‐doped fibers, the role of structural defects in creating BACs is still not clear. In some studies, correlations between processes creating more structural defects and better fiber performances have been reported 12,42 . In a bismuth‐doped phosphosilicate fiber, luminescence intensity was only reduced by ∼50% after ODCs were destroyed permanently due to the combination of photobleaching and heating 15 …”

Section: What Are the “Bacs” In Bismuth‐doped Fiber?mentioning

confidence: 99%

Section: What Are the “Bacs” In Bismuth‐doped Fiber?mentioning

confidence: 99%

“…21 As P 2 O 5 concentration increases, the absorption peak is blue shifted (one example is shown in Figure 1). 12 This observation can be explained by the increase of the portion of BACs in P-rich environment and bismuth species interact with more disordered network structure. 17 The electrons that generate O-band luminescence are in 6p orbitals at ground state.…”

Section: Role Of Phosphorous In Creating Bacsmentioning

confidence: 99%

See 2 more Smart Citations

Review of bismuth‐doped fibers used in O‐band optical amplifiers‐scientific challenges and outlook

Luo¹,

Mikhailov²,

Windeler³

et al. 2023

Int J of Appl Glass Sci

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Bismuth-doped phosphosilicate fibers have become the most promising gain medium for O-band amplifiers. Yet scientific challenges on understanding the nature of bismuth active centers (BACs), mechanisms of bismuth cluster formation in the phosphosilicate glass network still exist. It is likely that multiple BACs with different oxidation states in different structural sites all contribute to the broad, nonsymmetric luminescence and gain spectra. Due to the progress in the fundamental understanding of bismuth-doped phosphosilicate glass, various designs of optical amplifiers with decent performances have been demonstrated.

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Section: What Are the “Bacs” In Bismuth‐doped Fiber?mentioning

confidence: 99%

Section: What Are the “Bacs” In Bismuth‐doped Fiber?mentioning

confidence: 99%

Section: Role Of Phosphorous In Creating Bacsmentioning

confidence: 99%

See 1 more Smart Citation

Review of bismuth‐doped fibers used in O‐band optical amplifiers‐scientific challenges and outlook

Luo¹,

Mikhailov²,

Windeler³

et al. 2023

Int J of Appl Glass Sci

View full text Add to dashboard Cite

show abstract

“…have also been tried to activate and control the BAC. Recently, M. Melkumov et al have tried to improve the performance of BDF by the optimization of drawing and MCVD processing conditions [59,60]. Though these solutions can regulate the formation of BAC to some degree, the success rate still cannot be quantified due to the unclear structure of the BAC.…”

Section: Remaining Challengesmentioning

confidence: 99%

Introductory Chapter: Bismuth-Related Optoelectronic Materials

Luo¹,

Wen²,

Zhang³

2020

Bismuth - Fundamentals and Optoelectronic Applications

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“…The origin of the NIR emission is controversial due to the complex luminescent center dependent on different bismuth valence states in multi-component glasses [7]. Moreover, The Bi-doped fibers are generally prepared using modified chemical vapor deposition (MCVD) technique [8][9]. Low concentration of Bi could be retained in hosts caused by the complex preparation conditions and the high sintering temperature [10], which was adverse to obtaining high amplifier gain and laser efficiency.…”

Section: Introductionmentioning

confidence: 99%

Low-temperature preparation and optical properties of Bi/Al co-doped silica glass

Yang

Zheng

et al. 2023

Advanced Fiber Laser Conference (AFL2022)

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Bismuth (Bi)-doped silica-based glasses and fibers are attractive materials for the new optical amplifiers and tunable lasers.In this paper, Bi/Al co-doped silica glass with a relatively high Bi concentration (0.552 wt.%) were prepared by using the optimized sol-gel method. Hydrofluoric acid (HF) was used as a catalyst in the reaction, which reduced the hydroxyl to lower than 5ppm in the final glass. After the process of drying and sintering, the gel was turned into the transparent glass at low temperature (~1300 °C). The optical properties of Bi/Al co-doped silica glass were also investigated. Excited by a 980 nm laser diode (), broadband fluorescence centered at 1114 nm was obtained, which was ascribed to the Bi-Al active center (BAC-Al). The emission cross-section (𝜎 𝑒𝑚 ) was calculated to be 7.4 × 10 −21 cm 2 for BAC-Al. In addition, ultrabroadband emission ranging from 850 nm to 1700 nm was also obtained excited by the 808 nm LD, which might be ascribed to BAC-P overlapped by other BACs. After the gaussian separation of fluorescence peak, the emission crosssection for BAC-P was 13.4× 10 −21 cm 2 . Our results confirmed the potentialities of the optimized sol-gel method in Bidoped glass fabrication. The Bi/Al co-doped silica glass prepared in this work were promising to develop Bi-doped fibers and relative devices.

show abstract

The Influence of the MCVD Process Parameters on the Optical Properties of Bismuth-Doped Phosphosilicate Fibers

Cited by 29 publications

References 20 publications

Review of bismuth‐doped fibers used in O‐band optical amplifiers‐scientific challenges and outlook

Review of bismuth‐doped fibers used in O‐band optical amplifiers‐scientific challenges and outlook

Introductory Chapter: Bismuth-Related Optoelectronic Materials

Low-temperature preparation and optical properties of Bi/Al co-doped silica glass

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