Gain Equalization of 4-Mode Erbium-Doped Fiber Amplifier Based on Cladding Pump

Jiangran Ruan; Li Pei; Jingjing Zheng; Jianshuai Wang; Wenxuan Xu; Jing Li; Tigang Ning

doi:10.3788/AOS202242.0406001

Acta Optica Sinica, Volume. 42, Issue 4, 0406001(2022)

Gain Equalization of 4-Mode Erbium-Doped Fiber Amplifier Based on Cladding Pump

Jiangran Ruan^1,2, Li Pei^1,2、*, Jingjing Zheng^1,2, Jianshuai Wang^1,2, Wenxuan Xu^1,2, Jing Li^1,2, and Tigang Ning^1,2

Author Affiliations

¹Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China

²Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China

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Figures & Tables(10)

$Refractive index distribution, erbium ion doping distribution, and mode field distribution in ring core fiber. (a) Refractive index distribution and erbium ion doping distribution in ring core fiber; (b) mode field distribution$

Fig. 1. Refractive index distribution, erbium ion doping distribution, and mode field distribution in ring core fiber. (a) Refractive index distribution and erbium ion doping distribution in ring core fiber; (b) mode field distribution

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Fig. 2. DMG of ring core fiber varying with a₁

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Fig. 3. DMG of FM-EDFA varying with Δn₂ and d

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Fig. 4. Gain and DMG of FM-EDFA varying with pump power

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Fig. 5. Gain and DMG of FM-EDFA varying with fiber length

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Fig. 6. Spectra of 4-mode group of FM-EDFA. (a) Gain and DMG; (b) noise figure

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Fig. 7. DMG varying with offsets of N₁ and N₂

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Fig. 8. DMG varying with offsets of a₁ and a₂

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Fig. 9. Distribution characteristic of DMG

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Table 1. Performance comparison of proposed FM-EDFA and other FM-EDFAs

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Table 1. Performance comparison of proposed FM-EDFA and other FM-EDFAs

Fiber	Scheme	Signal mode	DMG /dB	FM-EDFA
Step fiber	Core pumping (high-order mode)	LP₀₁, LP₁₁	1.20	Ref. [21]
Step fiber	Layered doping & core pumping	LP₀₁, LP₁₁, LP₂₁, LP₀₂	0.50	Ref. [18]
Step fiber	Layered doping & cladding pump	LP₀₁, LP₁₁, LP₂₁, LP₀₂	0.60	Ref. [23]
Step fiber	Layered doping & core pumping	LP₀₁, LP₁₁, LP₂₁, LP₀₂	2.50	Ref. [17]
Ring core fiber	Core pumping	LP₀₁, LP₁₁, LP₂₁, LP₃₁, LP₄₁	0.60	Ref. [22]
Ring core fiber	Layered doping & cladding pump	LP₀₁, LP₁₁, LP₂₁, LP₃₁	0.45	Proposed

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Jiangran Ruan, Li Pei, Jingjing Zheng, Jianshuai Wang, Wenxuan Xu, Jing Li, Tigang Ning. Gain Equalization of 4-Mode Erbium-Doped Fiber Amplifier Based on Cladding Pump[J]. Acta Optica Sinica, 2022, 42(4): 0406001

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Paper Information

Category: Fiber Optics and Optical Communications

Received: Jun. 23, 2021

Accepted: Aug. 20, 2021

Published Online: Jan. 29, 2022

The Author Email: Pei Li (lipei@bjtu.edu.cn)

DOI:10.3788/AOS202242.0406001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology