Stable and narrow linewidth linear cavity CW-active Q-switched erbium-doped fiber laser

Monga, Kaboko Jean-Jacques; Martínez-Manuel, Rodolfo; Meyer, Johan; Díaz, Silvia; Sompo, Justice

doi:10.1016/j.optlastec.2021.107013

Cited by 9 publications

(5 citation statements)

References 40 publications

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“…Single longitudinal mode (SLM) is achieved by suppressing the unwanted mode in the fiber laser such that only a single mode is transmitted from the output. The SLM erbium-doped fiber laser has been demonstrated in both the linear [12] and ring [13] cavity configurations, respectively.…”

Section: Related Workmentioning

confidence: 99%

“…Ring fiber lasers are also known to be susceptible to power fluctuations caused by mode hopping, due to the long length of the cavity, resulting in multi-mode operation [18]. These power instabilities can significantly degrade the performance of a sensor when used as a sensor interrogator [12]. The laser output power stability usually depends on many parameters, such as the EDF lengths, the coupling ratio of the output, and the total cavity length [16]; it can be improved through an appropriate choice of laser design parameters and optimization.…”

Section: Related Workmentioning

confidence: 99%

“…Three output wavelengths of 1529.2 nm, 1545.1 nm, and 1560.2 nm, with output power stabilities of 0.39 dB, 0.33 dB, and 0.64 dB, respectively, were achieved [31]. Recently, a single wavelength erbium-doped fiber laser with a narrow linewidth operation and a stable output was used with a saturable absorber and a tunable filter [12,13]. The F-P tunable filter and a saturable absorber were used to suppress unwanted modes and achieve a stable laser output [13].…”

Section: Related Workmentioning

confidence: 99%

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Linewidth Narrowing of a Dual Wavelength-Selectable, Ring Cavity Erbium-Doped Fiber Laser Using a Saturable Absorber

et al. 2023

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The narrow linewidth fiber laser is useful in applications such as fiber sensing, optical communications, and spectroscopy. This paper presents an investigation of the model and an experiment of a stable, wavelength-selective, narrow linewidth, ring cavity erbium-doped fiber laser incorporating two fiber Bragg gratings (FBG) at 1530.18 nm and 1550.08 nm, respectively. An F-P tunable filter was used to select a specific wavelength after optimizing the spectral output from the two FBGs to measure their respective linewidths. The erbium-doped ring fiber laser was optimized by adjusting the optical cavity loss using a variable optical coupler at a coupling ratio of 95%. The variable coupler was set to an optimal coupling ratio of 95%, where the spectral output powers of 3.4 mW at 1530.18 nm and 3.1 mW at 1550.08 nm were achieved as the optimal fiber laser output powers. The balanced output power had an optical signal-to-noise ratio of (OSNR) of 61 dB for each wavelength. The linewidth was measured for both wavelengths without saturable absorbers, and 27.7 kHz and 28.3 kHz for 1530.18 nm and 1550.08 nm were obtained. Using the saturable absorber, the linewidths were narrowed to 25.3 KHz and 21.1 kHz for 1530.18 nm and 1550.08 nm, respectively.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

Linewidth Narrowing of a Dual Wavelength-Selectable, Ring Cavity Erbium-Doped Fiber Laser Using a Saturable Absorber

et al. 2023

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“…The design allowed for mWlevel power output around 400.8 nm, when the SMSR approached 50 dB [60]. Monga et al [61] reported a laser composed of FBG to improve the stability of the output power and narrow linewidth. The central wavelength of the laser was 1550 nm, the SMSR was 82 dB and the linewidth was 16 kHz.…”

Section: Fbg-ecslsmentioning

confidence: 99%

Research Progress of Wide Tunable Bragg Grating External Cavity Semiconductor Lasers

Shi

Wei

et al. 2022

Materials

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In this paper, we review the progress of wide tunable Bragg grating external cavity semiconductor lasers (BG-ECSLs). We concentrate on BG-ECSLs based on the wide tunable range for multicomponent detection. Wide tunable BG-ECSLs have many important applications, such as wavelength-division multiplexing (WDM) systems, coherent optical communications, gas detection and atom cooling. Wide tunability, narrow linewidth and a high side-mode suppression ratio BG-ECSLs have attracted much attention for their merits. In this paper, three main structures for achieving widely tunable, narrow linewidth, high side-mode suppression ratio BG-ECSLs are reviewed and compared in detail, such as the volume Bragg grating (VBG) structure, fiber Bragg grating (FBG) structure and waveguide Bragg grating (WBG) structure of ECSLs. The advantages and disadvantages of different structures of BG-ECSLs are analyzed. The results show that WBG-ECSLs are a potential way to realize the integration, small size, wide tuning range, stable spectral output and high side-mode suppression ratio laser output. Therefore, the use of WBG as optical feedback elements is still the mainstream direction of BG-ECSLs, and BG-ECSLs offer a further new option for multicomponent detection and multi-atoms cooling.

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“…Some of the most commonly used filters for fundamental linewidth compression are narrow fiber Bragg gratings and bandpass filters [7]. Other filters, such as the Lyot filter [8,9], multimode interference filter [10,11], and Fabry-Perot filter [12], can also be used to further compress the lasing wavelength or even obtain single-longitudinal-mode (SLM) operation through tunable periodic filtering. As an alternative design, a compound ring cavity structure incorporating several cascaded or nested fiber rings to form narrow filters [13,14].…”

Section: Introductionmentioning

confidence: 99%

Observation of Q-switched and continuous wave regimes with mode-hopping in Er-doped fiber lasers incorporating a dynamic population grating

Wen¹,

Fan²,

Wang³

et al. 2023

Preprint

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Dynamic population gratings (DPGs) in rare-earth doped fibers are prevalent devices in fiber lasers for the production of single-longitudinal-mode emission, Q-switched pulses, and wavelength self-sweeping regimes. This study presents a transition from Q-switched state to continuous wave (CW) state, accompanying irregular mode-hopping, in an erbium-doped fiber laser with a heavily-doped DPG centered at 1549.95 nm. Our results demonstrate that the transition between these two states can be achieved by adjusting the pump power. The repetition frequency of the Q-switched pulse increases monotonically with the increasing pump power, while the pulse duration initially narrows and then expands because the reduced peak intensity weakens the nonlinear effect. Additionally, modulation peaks are evident on both the Q-switched pulse train and the CW background, which are induced by the irregular mode-hopping caused by the DPG. Furthermore, we observe that the central wavelength fluctuates within a range of 0.05 nm. These results provide valuable insight into the DPG effect in heavily-doped fibers.

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Stable and narrow linewidth linear cavity CW-active Q-switched erbium-doped fiber laser

Cited by 9 publications

References 40 publications

Linewidth Narrowing of a Dual Wavelength-Selectable, Ring Cavity Erbium-Doped Fiber Laser Using a Saturable Absorber

Linewidth Narrowing of a Dual Wavelength-Selectable, Ring Cavity Erbium-Doped Fiber Laser Using a Saturable Absorber

Research Progress of Wide Tunable Bragg Grating External Cavity Semiconductor Lasers

Observation of Q-switched and continuous wave regimes with mode-hopping in Er-doped fiber lasers incorporating a dynamic population grating

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