Ultra-Low Noise Figure in Optical Fiber Amplifier by Tailoring the Mode Field Profile of Erbium-Doped Fiber
| Autor: | Jinggang Peng, Haiqing Li, Le He, Qiang Qiu, Yang Lou, Nengli Dai, Yang Chen, Zhimu Gu, Yingbo Chu, Yingbin Xing, Jinyan Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
noise figure
Materials science business.industry Doping Physics::Optics Refractive index profile QC350-467 Optics. Light Noise figure Erbium-doped fiber amplifier Atomic and Molecular Physics and Optics Intensity (physics) TA1501-1820 Core (optical fiber) Optoelectronics Applied optics. Photonics Fiber Electrical and Electronic Engineering business Refractive index Noise (radio) optical communication |
| Zdroj: | IEEE Photonics Journal, Vol 14, Iss 1, Pp 1-6 (2022) |
| ISSN: | 1943-0655 |
| Popis: | We present a numerical analysis of noise performance improvement of the erbium-doped fiber amplifier by flatting the mode field intensity distribution within the interaction region of erbium ions. Three different refractive index types of erbium-doped fiber were used to study the effect of the pump mode intensity distribution on noise performance. The results show that taking advantage of the depressed refractive index erbium-doped fiber which has a flat mode distribution in the fiber core, the maximum reduction of nearly 0.53 dB for noise figure was achieved across the full C-band. Based on the center depressed refractive index profile, the noise figure was further decreased by about 0.1 dB by reducing the doping radius to 0.71 μm. Finally, maintaining the same gain level of ∼38.3 dB, a NF reduction of ∼0.63 dB was realized by introducing the center depressed refractive index profile and narrowing the erbium doping region. It is suggested that our investigation shows great potential for improving the noise performance of the erbium-doped fiber amplifier. |
| Databáze: | OpenAIRE |
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