Bismuth-doped optical fibers and fiber lasers operating in 1625-1775 nm range have been developed for the first time to the best of our knowledge. Now the existing bismuth-doped lasers, including the result presented in this Letter, can cover O, E, S, C, L, and U telecommunication bands. In addition, new data on the nature of the bismuth-related active center were obtained and discussed.
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http://dx.doi.org/10.1364/OL.39.006927 | DOI Listing |
In this Letter, we present an all-fiber bismuth (Bi)-doped germanosilicate fiber laser that is continuously tunable within the range of 1425-1475 nm, enabled by a tunable optical filter. A maximum output power of 86.4 mW was achieved at 1450 nm with a slope efficiency of 13.
View Article and Find Full Text PDFO-band intensity modulation and direct detection (IM/DD) transmission offers a promising solution for high-speed data center interconnects (DCIs). Additionally, the introduction of bismuth-doped fiber amplifiers (BDFAs) results in less nonlinear impact and a higher link budget compared with semiconductor optical amplifiers (SOAs). However, with these key issues resolved, the system bandwidth limitation emerges as the next critical bottleneck for high-speed O-band DCI transmission that limits overall performance.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
December 2024
Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Cancer, kidney and liver damage, and even death result from water contaminated with textile dyes. This study highlighted a key approach for treating water contaminated with methylene blue (MB) dye. Bismuth-doped ferrite nanoparticles (NiZnCoBiFeO) with 0 ≤ × ≤ 0.
View Article and Find Full Text PDFMulticore fibers are promising structures with specific light propagation properties, which can be managed to benefit several applications in optical communications, fiber lasers and amplifiers, high-resolution imaging, and fiber-based sensors. The current use of multicore fibers in laser technology is mainly focused on in-phase coherent beam combining in far-field regions (out-cavity) using bulk optical elements. However, this approach is challenging in terms of the power scalability of all-fiber lasers (intra-cavity), particularly with using low-gain media, where it is needed to provide mode-coupling (supermode propagation) stability along relatively long lengths.
View Article and Find Full Text PDFMicromachines (Basel)
August 2024
School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
Bismuth-doped aluminosilicate glass has garnered significant attention due to its unique ultra-wide luminescence properties in the near-infrared (NIR) band. Enhancing the NIR luminescence of Bi-doped glass remains challenging. To achieve Bi-doped glass with more excellent luminescent properties, a series of Bi/Cr co-doped glasses were prepared, and the optical and structural properties of the samples were observed.
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