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ITO-assisted fiber-optic polarization-insensitive electro-absorption optical modulator

机译：ITO辅助的光纤偏振不敏感电吸收光调制器

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摘要

The identical modulating ability between transverse electric, TE, and transverse magnetic, TM, modes is stringent condition while realizing polarization insensitive optical modulators. This in turn incorporates significant compromise in polarization sensitive loss, PSL. In this work, we propose the concept of fiberoptic polarization-insensitive optical modulator architecture that is attributed with a microscale length and low PSL. This is achieved by transferring Al/HfO2/ITO/HfO2 stack around the core region of half polished fiber that imposes equal influence on the horizontal and vertical components of propagating optical modes. Moreover, the majority of propagating optical modes is concentrated around active material region that results in compact, enhanced modulator design. The modulator is capable of offering extinction ratio as high as 23.71 dB and insertion loss as low as 1.01 dB for the TE mode. Concurrently, for TM mode are 23.93 dB and 1.07 dB. The PSL at ON-State of similar to 0.056 dB ensures similar modulating ability for both TE and TM modes. The 3 dB modulating bandwidth of 45.85 GHz is realized with active length of 10 mu m at the expense of 0.39 pJ/bit. The operating wavelength ranges between similar to 1475 nm and similar to 1625 nm with optical bandwidth excess of 150 nm. (C) 2017 Elsevier Inc. All rights reserved.
机译：在实现偏振不敏感的光学调制器的同时，横向电（TE）和横向磁（TM）模式之间的相同调制能力是严格的条件。反过来，这在偏振敏感损耗PSL中也有很大的折衷。在这项工作中，我们提出了光纤偏振不敏感的光调制器架构的概念，该架构归因于微尺度长度和低PSL。这是通过将Al / HfO2 / ITO / HfO2叠层转移到半抛光纤维的芯区域周围来实现的，该区域对传播光学模式的水平和垂直分量施加了相同的影响。而且，大多数传播的光学模式集中在活性材料区域周围，这导致紧凑的增强型调制器设计。对于TE模式，该调制器能够提供高达23.71 dB的消光比和低至1.01 dB的插入损耗。同时，对于TM模式，为23.93 dB和1.07 dB。导通状态下的PSL约为0.056 dB，可确保TE和TM模式具有相似的调制能力。在有源长度为10μm的情况下，以0.39 pJ /位的代价实现了45.85 GHz的3 dB调制带宽。工作波长范围在类似于1475 nm和类似于1625 nm之间，光带宽超过150 nm。 （C）2017 Elsevier Inc.保留所有权利。

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  • 来源
    《Optical fiber technology》 |2017年第7期|422-427|共6页
  • 作者

    Shah Manoj Kumar; Lu Rongguo; Zhang Xiaoxia; Zhang Yali; Chen Dejun; Liu Yong;

  • 作者单位

    Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, 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

    ITO; Polarization-insensitive; Identical-absorption; Optical modulator;

    机译：ITO;极化不敏感;相同吸收;光调制器;

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