多芯光纤放大器研究现状及发展分析 
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Research Status and Development Analysis of Multicore Fiber Amplifier
1 无锡科技职业学院物联网与软件技术学院, 江苏 无锡 214028
2 香港理工大学电子及资讯工程学系, 香港
图 & 表
图 1. 多芯光纤分类
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Fig. 1. Multi-core fiber
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图 2. 采用芯区抽运方式的7芯MC-EDFA结构
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Fig. 2. 7-core MC-EDFA with core pumping
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图 3. 多芯放大器包层抽运采用的耦合器
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。(a) TFB;(b)自由空间结构耦合器;(c)熔锥侧面耦合器
Fig. 3. Couplers used in cladding pump of MC-EDFA
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. (a) TFB; (b) free space coupler; (c) taper side coupler
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图 4. 32芯EYDFA实验装置图
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Fig. 4. Experimental setup of 32-core EYDFA
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图 5. 远程抽运多芯掺铒放大器
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Fig. 5. Remotely pumped MC-EDFA
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图 6. 多芯EDFA/Raman混合放大器结构
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Fig. 6. Multi-core EDFA/Raman hybrid amplifier
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图 7. 19芯C+L波段混合多芯放大器结构示意图
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。(a) 19芯掺铒光纤;(b)放大器
Fig. 7. Structural diagram of C+L band hybrid multi-core amplifier with 19-core
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. (a) 19-core EDF; (b) amplifier
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表 1弱耦合MC-EDFA研究进展
Table1. Research progress of weak coupled MC-EDFA
| Year | Core | Wavelength | Gain /dB | NF /dB | Length /m | Pumping scheme /combiner | Ref. No |
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| 2011 | 7 | C-band | 25 | <4 | 15 | Core/980 nm | [7] | | 2012 | 3 | 1540-1580 | 15 | - | 12 | Core/1480 nm, bi-pump | [15] | | 2012 | 7 | 1580-1610 | >15 | <5.5 | 16 | Cladding/free space combiner | [10] | | 2014 | 7 | 1535-1570 | >25 | <8 | 34 | Cladding/side pump combiner | [13] | | 2014 | 19 | 1550 | 19.6-23.3 | 6-7 | 7 | Cladding/free space combiner | [8] | | 2016 | 7 | C-band | 18 | 6.1 | 8 | Cladding/side pump combiner | [16] | | L-band | 13.1 | 5.8 | 50 | | Cladding/side pump combiner | | 2017 | 19 | 1575-1605 | 15.7 | 5.8 | 50 | Cladding/side pump combiner | [17] | | 2018 | 7 | 1530-1565 | >16 | <8.0 | - | Cladding/pump recycle (cascaded) | [18] | | 2018 | 7 | 1535-1560 | 7 | 9.21 | 4.5 | Cladding/ side pump combiner 1480 nm | [19] |
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表 2多芯少模光纤放大器研究进展
Table2. Research progress of few mode multi-core fiber amplifier
| Year | Core number | Mode number | Wavelength /nm | Gain /dB | NF /dB | DMG /dB | Ref. No. |
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| 2012 | 6 | 3 | 1530-1560 | >20 | 6-9 | <3 | [26] | | 2018 | 6 | 3 | C-band | 18 | 6.5 | <4 | [28]
[28] | | L-band | 15 | <7.5 | | <5 | | 2019 | 6 | 7 | C-band | >17 | <7 | 5-6 | [29] |
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表 3MC-EYDFA研究进展
Table3. Research progress of MC-EYDFA
| Year | Core | Wavelength/nm | Gain /dB | NF /dB | Gain diff /dB | Length /m | Pump | Ref. No |
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| 2013 | 12 | 1534-1561.4 | 13.4-18.3 | <7.8 | 4.9 | 5 | Cladding/free space | [12] | | 2017 | 7 | 1542-1564 | >18 | - | 1.3 | 7 | Cladding/side | [32] | | 2017 | 32 | 1534-1561 | >17(20) | 6.5 | 2 | 3+4 | Cladding/side | [33] |
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迟荣华, 周燕萍, 李立亚. 多芯光纤放大器研究现状及发展分析[J]. 激光与光电子学进展, 2019, 56(19): 190005. Ronghua Chi, Yanping Zhou, Liya Li. Research Status and Development Analysis of Multicore Fiber Amplifier[J]. Laser & Optoelectronics Progress, 2019, 56(19): 190005.
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