Optically tunable mode-locked fiber laser using long-period grating coated with multiwall carbon nanotubes

We demonstrate an optically tunable mode-locked fiber laser using long-period fiber grating (LPFG) coated with multi-walled carbon nanotubes (CNTs). The multi-walled CNTs can absorb light to convert it into thermal energy, and the resonance wavelength of the grating can be easily turned by varying t...

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Veröffentlicht in:Applied physics letters 2024-03, Vol.124 (11)
Hauptverfasser: Jiang, Chen, Wan, Ying, Yun, Ling, Ma, Yuehui, Chen, Siyu, Sun, Bing, Dai, Lilong, Mou, Chengbo, Liu, Yunqi, Zhang, Zuxing
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container_end_page
container_issue 11
container_start_page
container_title Applied physics letters
container_volume 124
creator Jiang, Chen
Wan, Ying
Yun, Ling
Ma, Yuehui
Chen, Siyu
Sun, Bing
Dai, Lilong
Mou, Chengbo
Liu, Yunqi
Zhang, Zuxing
description We demonstrate an optically tunable mode-locked fiber laser using long-period fiber grating (LPFG) coated with multi-walled carbon nanotubes (CNTs). The multi-walled CNTs can absorb light to convert it into thermal energy, and the resonance wavelength of the grating can be easily turned by varying the external modulated light power. This multi-walled CNT coated LPFG-based all-optical fast and efficient spectrum tunable filter enables continuous tuning of the central wavelength of the laser by manipulating the loss of the mode-locked laser, ensuring the stability of the mode-locking state. In the absence of modulated light on multi-walled CNTs, the soliton laser could generate 890 fs pulses at 1546.7 nm with a spectrum bandwidth of 3.26 nm and a signal-to-noise ratio of 73.1 dB. Through adjustment of the pump power of the modulation light on multi-walled CNTs, the mode-locked fiber laser can be continuously tuned from 1546.71 to 1563.15 nm. The response time of the optically tunable system was measured to be in the order of hundreds of milliseconds. The presented optical tuning filter shows great potential in the fiber laser system, offering a repeatable, straightforward, and rapidly responsive laser tuning technique.
doi_str_mv 10.1063/5.0197095
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The multi-walled CNTs can absorb light to convert it into thermal energy, and the resonance wavelength of the grating can be easily turned by varying the external modulated light power. This multi-walled CNT coated LPFG-based all-optical fast and efficient spectrum tunable filter enables continuous tuning of the central wavelength of the laser by manipulating the loss of the mode-locked laser, ensuring the stability of the mode-locking state. In the absence of modulated light on multi-walled CNTs, the soliton laser could generate 890 fs pulses at 1546.7 nm with a spectrum bandwidth of 3.26 nm and a signal-to-noise ratio of 73.1 dB. Through adjustment of the pump power of the modulation light on multi-walled CNTs, the mode-locked fiber laser can be continuously tuned from 1546.71 to 1563.15 nm. The response time of the optically tunable system was measured to be in the order of hundreds of milliseconds. 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source 美国小型学会期刊集(AIP Scitation平台)
subjects Continuous fiber composites
Electrons
Fiber lasers
Gratings (spectra)
Laser mode locking
Lasers
Multi wall carbon nanotubes
Signal to noise ratio
Solitary waves
Thermal energy
Tunable filters
Tunable lasers
Tuning
title Optically tunable mode-locked fiber laser using long-period grating coated with multiwall carbon nanotubes
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