A novel differential quadrature polarization shift keying modulation without polarization tracking

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-06-27 DOI:10.1016/j.yofte.2025.104321

Yongjian Chen, Yang Lu, Zhaowen Jin, Yuewen Zhang, Junwei He, Yunxin Lv, Meihua Bi

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引用次数: 0

Abstract

A novel non-amplitude modulation called as differential quadrature polarization shift keying (DQPolSK) is proposed in this paper. In the detection, the polarization-to-amplitude conversion is through delayed interferometers, rather than polarization beam splitters (PBSs). DQPolSK signal suffers no degradation from random polarization rotation in fibers, so polarization tracking or polarization recovery is not required. The cost and the operation complexity are both reduced compared with traditional polarization shift keying (PolSK) and polarization division multiplexing (PDM). Four polarization states are used to double the bit rate. The spectrum efficiency exceeds that of PolSK and equals to that of PDM while the amplitude is kept constant. The modulation and detection is comparative simple. The tested results verify the good robustness of DPolSK signal against polarization rotation and the feasibility of DPolSK application in optical fiber communication.

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一种不带偏振跟踪的微分正交偏振移键控调制方法

本文提出了一种新型的无幅度调制技术——微分正交偏振移键控。在检测中，偏振到振幅的转换是通过延迟干涉仪，而不是偏振分束器（PBSs）。DQPolSK信号不受光纤中随机偏振旋转的影响，因此不需要偏振跟踪或偏振恢复。与传统的偏振移键控（PolSK）和偏振分复用（PDM）技术相比，该技术的成本和操作复杂度都有所降低。使用四种偏振状态使比特率翻倍。在保持振幅不变的情况下，频谱效率超过了PolSK，与PDM相当。调制和检测相对简单。测试结果验证了DPolSK信号对偏振旋转具有良好的鲁棒性，以及DPolSK在光纤通信中的应用可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.