Fei Wang

1 month ago | mdpi.com | Fei Wang |Jingxia Gao |Hui Li |Junle Zhang

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.

Jan 21, 2025 | mdpi.com | Xing Liu |Yanan Cheng |Ying Zhang |Fei Wang

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.

Jan 8, 2025 | mdpi.com | Fei Wang |Lili Han |Lulu Liu |Yang Wei

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.

Jan 2, 2025 | opg.optica.org | Fei Wang

In this work, a five-mode erbium-doped waveguide amplifier with low differential modal gain (DMG) is first proposed. A novel, to the best of our knowledge, gain equalization scheme for synergistic reconfiguration of refractive index and concentration doping is adopted to equalize the modal gains based on the dual-layer ring core structure.

Dec 23, 2024 | pubs.rsc.org | Fei Wang

Magnesium vapor-assisted deoxidation of La–Ce alloys through micro-alloying† Deep deoxidation of La–Ce alloys using Mg vapor is a crucial process to ensure the quality of the alloy. In this study, we systematically investigated the effects of temperature, time and vacuum on the oxygen content in La–Ce alloys during the deoxidation with Mg vapor. The relationship between surface characteristics and the deoxidation process was also discussed.