Power Spectrum in a Single-Mode Laser with Biased Amplitude Modulation

BAO Guang-qing; ZHANG Ji-long; LI Wei-sheng; DING Zhi-qiang; LIN Qi-lin

doi:10.13756/j.gtxyj.2017.01.001

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Power Spectrum in a Single-Mode Laser with Biased Amplitude Modulation

- Power Spectrum in a Single-Mode Laser with Biased Amplitude Modulation
- Study on Optical communication Issue 1, Pages: 1-2(2017)
- 作者机构：
  
  1. 兰州理工大学电气工程与信息工程学院
  2. 山东省科学院自动化研究所
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2017.01.001
  CLC： TN24
- Published：2017，
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[1]包广清,张继龙,李伟生,丁志强,林麒麟.基于偏置调幅波调制的单模激光系统功率谱研究[J].光通信研究,2017(01):1-2+6.

BAO Guang-qing, ZHANG Ji-long, LI Wei-sheng, et al. Power Spectrum in a Single-Mode Laser with Biased Amplitude Modulation. [J]. (1):1-2(2017)
[1]包广清,张继龙,李伟生,丁志强,林麒麟.基于偏置调幅波调制的单模激光系统功率谱研究[J].光通信研究,2017(01):1-2+6. DOI： 10.13756/j.gtxyj.2017.01.001.

BAO Guang-qing, ZHANG Ji-long, LI Wei-sheng, et al. Power Spectrum in a Single-Mode Laser with Biased Amplitude Modulation. [J]. (1):1-2(2017) DOI： 10.13756/j.gtxyj.2017.01.001.

摘要

为了改进单模激光系统的稳定性

在单模激光损失模型中输入偏置信号的调幅波

用线性化近似方法计算了输出光强的功率谱

得到功率谱与低频调制信号频率、量子噪声实虚部间的关联系数的变化规律。结果表明:当低频调制信号频率增大、量子噪声增大、自饱和系数减小、量子噪声实虚部间的关联较强时

系统的功率越小

单模激光系统的稳定性越好。同时发现

载波信号的振幅对激光系统的功率谱也有很大影响。

Abstract

In order to improve the stability of a single-mode laser system

the power spectrum in single-mode laser loss model is calculated based on the linear approximation method after inputting a biased amplitude modulation signal.The change rules of are obtained when the modulation signal of low frequency and cross-correlation between the real and imaginary part of the quantum noise are varied.The results indicate that when the low frequency of the modulation signal is large

the quantum noise is large

the self-saturation coefficient is small

and the cross-correlation between the real and imaginary part of the quantum noise is stronger

the power of the system is small and the stability of a single-mode laser system is better.Meanwhile

it is found that the amplitude of carrier signal has a significant influence on the power spectrum of the laser system.

关键词

激光物理调幅波单模激光功率谱线性化近似方法

Keywords

laser physicsamplitude modulation wavesingle-mode laserpower spectrumlinear approximation method

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