Q-switched and Mode-Locked pulse generation in fiber laser with micro particles polyacrylonitrile absorber

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

Optical Fiber Technology Pub Date : 2025-03-17 DOI:10.1016/j.yofte.2025.104208

Aeriyn D. Ahmad , Masruroh , Norrima Mokhtar , Hamzah Arof , Irfan Anjum Badruddin , Sarfaraz Kamangar , Sulaiman W. Harun

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引用次数: 0

Abstract

This paper investigates the use of polyacrylonitrile (PAN) absorber in an erbium-doped fiber laser (EDFL) for generating Q-switched and mode-locked pulses. PAN absorber was prepared by dispersing its micro-particles onto scotch tape, which was then added into the EDFL cavity. This absorber successfully enabled cavity loss modulation, with stable Q-switched operation achieved at a pump power threshold of 61.1 mW. The repetition frequency rose from 33.39 kHz to 45.35 kHz, and pulse width reduced from 8.55 μs to 6.42 μs as pump power rose from 61.1 mW to 155.0 mW. The Q-switched EDFL, operating at a central wavelength of 1560 nm, achieved the highest pulse energy of 240.4 nJ and a slope efficiency of 7.61 %. By adding 100 m of single-mode fiber (SMF) to the ring cavity, self-starting mode-locked operation was initiated, with stable pulses observed between 123.7 and 254.13 mW pump power. The laser operated at a central wavelength of 1566 nm, with a repetition rate of 1.8 MHz and a pulse width of 4.40 ps. These results demonstrate that polyacrylonitrile is an effective absorber for pulse generation in fiber lasers.

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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.