Few-Mode Erbium-Doped Fiber with Three-Layer Center-Recessed Doping for Gain Equalization
We propose a design method for few-mode erbium-doped fiber (FM-EDF) incorporating stratified doping. In the simulation design, the FM-EDF effectively reduces the differential mode gain (DMG) through the utilization of stratified doping. Simulations indicate that at an input signal power of −30 dBm,...
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MDPI AG
2025-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/7/2010 |
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| author | Shengchen Bao Yu Cheng Yi Tang Ming Chen Shijie Deng Libo Yuan |
| author_facet | Shengchen Bao Yu Cheng Yi Tang Ming Chen Shijie Deng Libo Yuan |
| author_sort | Shengchen Bao |
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| description | We propose a design method for few-mode erbium-doped fiber (FM-EDF) incorporating stratified doping. In the simulation design, the FM-EDF effectively reduces the differential mode gain (DMG) through the utilization of stratified doping. Simulations indicate that at an input signal power of −30 dBm, the designed fiber achieves a DMG of less than 0.5 dB across five spatial modes spanning the entire C-band (1530–1570 nm) and exceeds 20 dB gain within the range of 1530–1560 nm. Additionally, experiments using unidirectional pumping demonstrate that the FM-EDF achieves full-band gain greater than 20 dB, with a maximum gain approaching 30 dB and DMG <1 dB, across the C-band in three spatial modes. In summary, the proposed FM-EDF enhances the efficiency and reliability of long-distance signal transmission in optical communication networks, making it suitable for high-capacity optical fiber communication systems as well as long-distance sensing systems. |
| format | Article |
| id | doaj-art-c724282ba49f4238a31b7aaaa409d4c2 |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-c724282ba49f4238a31b7aaaa409d4c22025-08-20T02:15:46ZengMDPI AGSensors1424-82202025-03-01257201010.3390/s25072010Few-Mode Erbium-Doped Fiber with Three-Layer Center-Recessed Doping for Gain EqualizationShengchen Bao0Yu Cheng1Yi Tang2Ming Chen3Shijie Deng4Libo Yuan5School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaSchool of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaSchool of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaSchool of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaSchool of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaSchool of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, ChinaWe propose a design method for few-mode erbium-doped fiber (FM-EDF) incorporating stratified doping. In the simulation design, the FM-EDF effectively reduces the differential mode gain (DMG) through the utilization of stratified doping. Simulations indicate that at an input signal power of −30 dBm, the designed fiber achieves a DMG of less than 0.5 dB across five spatial modes spanning the entire C-band (1530–1570 nm) and exceeds 20 dB gain within the range of 1530–1560 nm. Additionally, experiments using unidirectional pumping demonstrate that the FM-EDF achieves full-band gain greater than 20 dB, with a maximum gain approaching 30 dB and DMG <1 dB, across the C-band in three spatial modes. In summary, the proposed FM-EDF enhances the efficiency and reliability of long-distance signal transmission in optical communication networks, making it suitable for high-capacity optical fiber communication systems as well as long-distance sensing systems.https://www.mdpi.com/1424-8220/25/7/2010few-mode erbium-doped fiber amplifiergain equalizationmode division multiplexed |
| spellingShingle | Shengchen Bao Yu Cheng Yi Tang Ming Chen Shijie Deng Libo Yuan Few-Mode Erbium-Doped Fiber with Three-Layer Center-Recessed Doping for Gain Equalization Sensors few-mode erbium-doped fiber amplifier gain equalization mode division multiplexed |
| title | Few-Mode Erbium-Doped Fiber with Three-Layer Center-Recessed Doping for Gain Equalization |
| title_full | Few-Mode Erbium-Doped Fiber with Three-Layer Center-Recessed Doping for Gain Equalization |
| title_fullStr | Few-Mode Erbium-Doped Fiber with Three-Layer Center-Recessed Doping for Gain Equalization |
| title_full_unstemmed | Few-Mode Erbium-Doped Fiber with Three-Layer Center-Recessed Doping for Gain Equalization |
| title_short | Few-Mode Erbium-Doped Fiber with Three-Layer Center-Recessed Doping for Gain Equalization |
| title_sort | few mode erbium doped fiber with three layer center recessed doping for gain equalization |
| topic | few-mode erbium-doped fiber amplifier gain equalization mode division multiplexed |
| url | https://www.mdpi.com/1424-8220/25/7/2010 |
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