CN111835430A - 一种光传输系统中偏振模色散补偿技术 - Google Patents

一种光传输系统中偏振模色散补偿技术 Download PDF

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Publication number
CN111835430A
CN111835430A CN201910298311.3A CN201910298311A CN111835430A CN 111835430 A CN111835430 A CN 111835430A CN 201910298311 A CN201910298311 A CN 201910298311A CN 111835430 A CN111835430 A CN 111835430A
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optical signal
compensation
polarization
optical
transmission system
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余爱金
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Wuxi Yasige Precision Machinery Co ltd
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Wuxi Yasige Precision Machinery Co ltd
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Priority to CN201910298311.3A priority Critical patent/CN111835430A/zh
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60Receivers
    • H04B10/61Coherent receivers
    • H04B10/616Details of the electronic signal processing in coherent optical receivers
    • H04B10/6162Compensation of polarization related effects, e.g., PMD, PDL

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

本发明提供一种光传输系统中偏振模色散补偿技术,包括1、以下步骤:S1:收集样本光信号;S2:对光信号中的特定分量重新改变其偏振方向,符合补偿模式中的光需求,并对光信号进行放大处理;S3:对于样本光信号的多个偏振分量之间的多个相位延迟,使多个偏振分量干涉;S4:对光信号进行补偿。本发明工艺简单,操作便利,提高色散补偿效率,保证光信号输出的品质。

Description

一种光传输系统中偏振模色散补偿技术
技术领域
本发明主要涉及光传输领域,尤其涉及一种光传输系统中偏振模色散补偿技术。
背景技术
色散有以下几种:
(1)材料色散:材料的折射率是波长的非线性函数,使得光的传播速度随波长而改变。由此引起的色散叫材料色散。
(2)波导色散:同一模式的相位常数随波长而变,而引起的色散;
(3)模式色散:多模光纤中,即使在同一波长,不同模式的传播速度也不同,由此引起的色散。又称模式色散。
(4)偏振模色散:单模光纤中实际存在偏振方向相互正交的两个基膜,当光纤存在双折射时,两个模式的传输速度不同,由此而引起的色散即偏振模色散。
已公开中国发明专利,申请号CN02810054.9,专利名称:光传输介质中偏振模色散的补偿,申请日:20020319,本发明提供在不对激光源进行微扰的情况下补偿光传输介质中偏振模色散的方法和装置。本发明通过把光传输系统中光信号的足够多的一部分转移到所述系统的单一PSP来补偿PMD。结果,数据流中的每一个光脉冲基本上都不与时间上相邻的光脉冲或位周期混合。
发明内容
本发明提供一种光传输系统中偏振模色散补偿技术,针对现有技术的上述缺陷,提供一种光传输系统中偏振模色散补偿技术,包括以下步骤:
S1:收集样本光信号;
S2:对光信号中的特定分量重新改变其偏振方向,符合补偿模式中的光需求,并对光信号进行放大处理;
S3:对于样本光信号的多个偏振分量之间的多个相位延迟,使多个偏振分量干涉;
S4:对光信号进行补偿。
优选的,在S4步骤中,光信号的补偿包括预补偿、线补偿和后补偿。
优选的,在S4步骤中,预补偿是指偏振后的光信号在进入传输线路钱提供色散补偿量。
优选的,接收到的光信号中两个选定的正交偏振分量变换成两个预定正交偏振态。
本发明的有益效果:工艺简单,操作便利,提高色散补偿效率,保证光信号输出的品质。
具体实施方式
本发明包括以下步骤:
S1:收集样本光信号;
S2:对光信号中的特定分量重新改变其偏振方向,符合补偿模式中的光需求,并对光信号进行放大处理;
S3:对于样本光信号的多个偏振分量之间的多个相位延迟,使多个偏振分量干涉;
S4:对光信号进行补偿。
在本实施中优选的,在S4步骤中,光信号的补偿包括预补偿、线补偿和后补偿。
在本实施中优选的,在S4步骤中,预补偿是指偏振后的光信号在进入传输线路钱提供色散补偿量。
在本实施中优选的,接收到的光信号中两个选定的正交偏振分量变换成两个预定正交偏振态。
上述实施例仅例示性说明本专利申请的原理及其功效,而非用于限制本专利申请。任何熟悉此技术的人士皆可在不违背本专利申请的精神及范畴下,对上述实施例进行修饰或改变。因此,举凡所属技术领域中具有通常知识者在未脱离本专利申请所揭示的精神与技术思想下所完成的一切等效修饰或改变,仍应由本专利请的权利要求所涵盖。

Claims (4)

1.一种光传输系统中偏振模色散补偿技术,其特征在于,包括以下步骤:
S1:收集样本光信号;
S2:对光信号中的特定分量重新改变其偏振方向,符合补偿模式中的光需求,并对光信号进行放大处理;
S3:对于样本光信号的多个偏振分量之间的多个相位延迟,使多个偏振分量干涉;
S4:对光信号进行补偿。
2.根据权利要求1所述的光传输系统中偏振模色散补偿技术,其特征在于:在所述S4步骤中,光信号的补偿包括预补偿、线补偿和后补偿。
3.根据权利要求2所述的光传输系统中偏振模色散补偿技术,其特征在于:在所述S4步骤中,预补偿是指偏振后的光信号在进入传输线路钱提供色散补偿量。
4.根据权利要求3所述的光传输系统中偏振模色散补偿技术,其特征在于:接收到的所述光信号中两个选定的正交偏振分量变换成两个预定正交偏振态。
CN201910298311.3A 2019-04-15 2019-04-15 一种光传输系统中偏振模色散补偿技术 Pending CN111835430A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1211744A (zh) * 1997-09-16 1999-03-24 朗迅科技公司 一次偏振模色散的自动补偿方法和设备
CN1509535A (zh) * 2001-03-19 2004-06-30 ��������幫˾ 光传输介质中偏振模色散的补偿
CN1760707A (zh) * 2005-11-10 2006-04-19 北京北方烽火科技有限公司 自适应宽带偏振模色散补偿方法和装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1211744A (zh) * 1997-09-16 1999-03-24 朗迅科技公司 一次偏振模色散的自动补偿方法和设备
CN1509535A (zh) * 2001-03-19 2004-06-30 ��������幫˾ 光传输介质中偏振模色散的补偿
CN1760707A (zh) * 2005-11-10 2006-04-19 北京北方烽火科技有限公司 自适应宽带偏振模色散补偿方法和装置

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