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首页> 外文期刊>Optical fiber technology >Power-efficient FCC-compliant UWB generator using polarization-maintaining FBG-based spectral shaper and incoherent wavelength-to-time mapping
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Power-efficient FCC-compliant UWB generator using polarization-maintaining FBG-based spectral shaper and incoherent wavelength-to-time mapping

机译：使用基于偏振保持FBG的频谱整形器和不相干的波长到时间映射的符合FCC要求的高效功率UWB发生器

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摘要

A novel scheme to generate power-efficient FCC-compliant UWB has been proposed using polarization-maintaining FBG-based spectral shaper and incoherent wavelength-to-time mapping. The target UWB pulse is designed based on the linear combination of four Gaussian pulses with the same pulsewidth, which can be considered as a Gaussian pulse that is bandpass-filtered by a four-tap nonuniformly-spaced filter. FCC-compliant UWB with high spectral power efficiency (46.2-57.2%) can be realized using optimized parameters. Temporal gate and spectral shaper are two key components of an incoherent spectral shaping and wavelength-to-time mapping (SS-WTTM) system. Owing to strong nonlinear absorption characteristic of electro-absorption modulator (EAM), lowpass-filtered electrical pulse is compressed for the implementation of narrow optical gate. 45-ps optical gate is achieved experimentally using 10-Gb/s EAM driven by 10-Gb/s bit pattern generator. This cost-effective gate can be extended to general incoherent SS-WTTM method to substitute commonly-used high-speed gate. Furthermore, a simple spectral shaper is designed based on a uniform polarization-maintaining FBG. To the best of our knowledge, it is the first time to achieve power-efficient FCC-compliant UWB using all-fiber spectral shaper, which has the advantages of small size, low insertion loss, and feasibility of integration. Proposed UWB generator is demonstrated by both simulation and experiment. FCC-compliant UWB with 10-dB bandwidth of 6.25-GHz, and spectral power efficiency of 55.9% is realized successfully.
机译：已经提出了一种使用保持偏振的基于FBG的频谱整形器和不相干的波长到时间映射来生成符合FCC要求的超高效UWB的新方案。目标UWB脉冲是基于四个具有相同脉冲宽度的高斯脉冲的线性组合而设计的，可以将其视为由四抽头非均匀间隔滤波器进行带通滤波的高斯脉冲。使用优化的参数可以实现具有高频谱功率效率（46.2-57.2％）的FCC兼容UWB。时间门控和频谱整形器是非相干频谱整形和波长至时间映射（SS-WTTM）系统的两个关键组件。由于电吸收调制器（EAM）具有很强的非线性吸收特性，因此对低通滤波后的电脉冲进行压缩以实现窄光闸。使用10 Gb / s比特码型发生器驱动的10 Gb / s EAM，可以通过实验实现45 ps的光闸。这种具有成本效益的门可以扩展为通用的非相干SS-WTTM方法，以替代常用的高速门。此外，基于均匀的保偏FBG设计了一个简单的频谱整形器。据我们所知，这是第一次使用全光纤频谱整形器来实现符合FCC标准的高能效UWB，它具有体积小，插入损耗低和集成可行性的优点。仿真和实验均演示了拟议的UWB发生器。成功实现了FCC兼容的UWB，其10-dB带宽为6.25 GHz，频谱功率效率为55.9％。

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  • 来源
    《Optical fiber technology》 |2019年第7期|271-276|共6页
  • 作者

    Mu Hongqian; Wang Muguang; Li Min;

  • 作者单位

    Beijing Jiaotong Univ, Minist Educ, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China|Beijing Jiaotong Univ, Inst Lightwave Technol, Beijing 100044, Peoples R China;

    Beijing Jiaotong Univ, Minist Educ, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China|Beijing Jiaotong Univ, Inst Lightwave Technol, Beijing 100044, Peoples R China;

    Beijing Jiaotong Univ, Minist Educ, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China|Beijing Jiaotong Univ, Inst Lightwave Technol, Beijing 100044, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    UWB-over-fiber; Spectral shaping; Wavelength-to-time mapping; Spectral power efficiency;

    机译：光纤超宽带;频谱整形;波长到时间的映射;频谱功率效率;

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