Spectral Analysis based on Stimulated Brillouin Scattering Effect

GUO Li-jun; TAN Zhong-wei

doi:10.13756/j.gtxyj.2023.01.007

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Spectral Analysis based on Stimulated Brillouin Scattering Effect

更新时间：2023-01-16

- Spectral Analysis based on Stimulated Brillouin Scattering Effect
- Study on Optical Communications Issue 1, Pages: 58-62(2023)
- 作者机构：
  
  北京交通大学　光波技术研究所全光网络与现代通信网教育部重点实验室，北京　100044
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2023.01.007
  CLC： TN29
- Published：10 February 2023，
  
  Received：24 April 2022，
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郭丽君，谭中伟.基于受激布里渊散射效应的光谱分析[J].光通信研究，2023(1)：58-62

GUO L J, TAN Z W.Spectral Analysis based on Stimulated Brillouin Scattering Effect[J]. Study on Optical Communications, 2023(1):58-62
郭丽君，谭中伟.基于受激布里渊散射效应的光谱分析[J].光通信研究，2023(1)：58-62 DOI： 10.13756/j.gtxyj.2023.01.007.

GUO L J, TAN Z W.Spectral Analysis based on Stimulated Brillouin Scattering Effect[J]. Study on Optical Communications, 2023(1):58-62 DOI： 10.13756/j.gtxyj.2023.01.007.

摘要

光学滤波器应用广泛，在许多应用中至关重要，包括光通信、光谱学、电子学和光学传感器等领域。而基于受激布里渊散射（SBS）效应的微波光子滤波器（MPF）不仅具有低阈值和高增益等优点，而且还具有可重构和可调谐的特性。文章将其应用在光谱分析中，利用该滤波器的可调谐性，使其扫描整个待测信号的光谱，就能对待检测光谱的不同频率成份进行分时提取检测。通过设置该滤波器泵浦支路中扫频激光器的中心频率，在泵浦激发产生SBS效应后，用光谱分析仪测出滤波器每次的输出功率，从而分析得出待测信号的光谱。研究结果表明，随着泵浦功率的增加，滤波器的增益和带外抑制比（OOBR）先逐渐增高，然后降低，拐点在泵浦功率为5 dBm左右，且滤波器的动态范围为-35～-20 dBm。

Abstract

Optical filters are widely used in many applications

including optical communication

spectroscopy

electronics and optical sensors. The Microwave Photonic Filter (MPF) based on Stimulated Brillouin Scattering (SBS) effect not only has the advantages of low threshold and high gain

but also has the characteristics of reconfiguration and tunability. In this paper

we apply MPF to spectral analysis. Using the tunability of the filter

the spectrum of the whole signal can be measured. And the different frequency components of the signal can be extracted by time-sharing. By setting the center frequency of the swept laser in the pump branch of the filter

the output power of the filter is measured by the optical spectrum analyzer after SBS effect generating by the pump excitation

so as to analyze the spectrum of the signal light. The results show that with the increase of pump power

the filter gain and Out of Band Rejection Ratio (OOBR) first increase and then decrease. The inflection point is about 5 dBm and the dynamic range of the filter is from -35 to -20 dBm.

关键词

光谱分析微波光子滤波器受激布里渊散射可调谐滤波器

Keywords

spectral analysisMPFSBStunable filter

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College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications

Xingyi Normal University for Nationalities,Xingyi

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