Supermode noise suppression with polarization- self-stabilization dual-loop for harmonic active mode-locking optoelectronic oscillator

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical Fiber Technology Pub Date : 2025-02-10 DOI:10.1016/j.yofte.2025.104147

Deqi Li , Tianshu Wang , Shutong Liu , Ping Zhang , Shaoqian Tian , Baoqun Li , Yan Chen , Tianjiao Wu , Sunde Wang , Junda Chen

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引用次数: 0

Abstract

A harmonic active mode-locked optoelectronic oscillator (HAML-OEO) with a polarization-self-stabilization dual-loop architecture is proposed to generate microwave pulse train with ultra-low supermode noise. Unlike traditional dual-loop HAML-OEOs, the input light in each loop passes through a 45° Faraday Rotator (FR) and different lengths of single mode fiber after reflecting off a 45° Faraday Rotator Mirror (FRM), the polarization state of the output and input optical signals is rotated by 180°, ensuring it is unaffected by external environmental disturbances. Meanwhile, the required fiber length is cut in half due to the dual loop is a reflective structure. Through using the polarization self-stabilization technique and the “Vernier effect”, the unwanted longitudinal modes are weakened at the early stage of the oscillation, which is beneficial for suppressing the supermode noise generated by phase-locking between unwanted modes in harmonic mode-locked. In the experiment, microwave pulse train with repetition rates of 506 kHz and 1.012 MHz are generated through 5th- and 10th-order harmonic mode locking, where the supermode noise suppression rations are measured to be beyond 63.09 dB and 55.11 dB, respectively.

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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.