Wavelength tunable actively Q-switched random fiber laser based on EOM and SMF and analysis of bright and dark pulse phenomenon

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

Optical Fiber Technology Pub Date : 2025-04-06 DOI:10.1016/j.yofte.2025.104224

Honggang Pan, Bin Li, Chunqi Chen, Yichen Li, Rupeng Li, Yukun Zhu, Qingcheng You, Zihong Zhao

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引用次数: 0

Abstract

In this study, a wide tunable wavelength range bright-dark pulses actively Q-switched random fiber laser based on electro-optical modulator (EOM) and single mode fiber (SMF) is presented. In the experiment, we used a section of 5 km SMF as random feedback medium to form a theoretical optical resonant cavity with the semi-open cavity. Single wavelength tuning from 1529.87 nm to 1562.56 nm can be achieved by adjusting the tunable bandpass filter (TBF). Setting the modulation frequency of the EOM to 10 kHz and altering the modulating signal waveform of the EOM can realize the switching of bright pulse, dark pulse, and bright-dark pulse pairs. The stability of the structure is measured when the pump’s output power is set to 300 mW, wavelength shift is smaller than 0.36 nm and the power swing is smaller than 2.19 dB. There are multiple uses for the random fiber laser described in this research, including medical imaging and sensing.

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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.