A switchable multi-wavelength mode-locked fiber laser based on a multi-mode interference device

Geng, Xiang; Jiang, Yanfei; Gu, Han; Luo, Saiyu; Sun, Ming; Li, Li

doi:10.1016/j.infrared.2023.104812

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…This indicates that the round-trip frequencies for all lasing wavelengths should be the same or have a common multiple. [8][9][10] Therefore, other methods must be used to provide stable multiwavelength modelocked operations because of the dispersion in the cavity. This complicates the construction of multiwavelength actively mode-locked fiber lasers.…”

Section: Introductionmentioning

confidence: 99%

Switchable mode-locked ytterbium-doped fiber laser based on macrobending loss tuning of figure-eight knot fiber structure

Al-Janabi,

Merza,

Al-Hayali

et al. 2024

Opt. Eng.

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We report on the demonstration of a switchable and adjustable spacing multiwavelength nanosecond pulsed ytterbium-doped fiber laser (YDFL) operating in a modelocking regime by macrobending loss tuning induced in a figure-eight knot shape. The figure-eight knot-based Mach-Zehnder interferometer (MZI) was established by wrapping a section of single-mode fiber into two elliptical loops by twisting one end of the fiber onto the other without splicing. Combining the proposed MZI with a polarization controller (PC) acts as a selective comb filter and a nanosecond pulse generator. By appropriately adjusting the bending diameter of the MZI structure inside the YDFL cavity, the laser can be operated in a single-and dual-wavelength with a maximum spacing range of 18.5 nm. Furthermore, the number of lasing wavelengths was directly controlled by only altering the pump power; dual and triple wavelengths were achieved as the pump power was increased from 127 to 210 mW, respectively. The appropriate adjustment of the PC cascaded with the proposed comb filter in the laser cavity allows for the generation of up to quadruple switchable wavelengths of nanosecond mode-locking pulses with a pulse duration of 6.2 ns and repetition rate of 71.4 MHz located between 1061.17 and 1038.92 nm. The experimental results indicate that the proposed configuration of the MZI-based comb filter can provide great potential in various photonics applications.

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Section: Introductionmentioning

confidence: 99%

Switchable mode-locked ytterbium-doped fiber laser based on macrobending loss tuning of figure-eight knot fiber structure

Al-Janabi,

Merza,

Al-Hayali

et al. 2024

Opt. Eng.

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show abstract

“…With the research and development of the discovery of the fiber laser, fiber lasers have an indispensable role in promoting the development of modern optical communication technology. Q-switched [10], modelocked [11], multiwavelength output [12][13][14][15][16][17][18][19], single longitudinal mode output [20] and other different forms of fiber lasers are active in various research fields all over the world. Therefore, fiber laser in all aspects of the characteristics can be improved.…”

Section: Introductionmentioning

confidence: 99%

Research on AWG-based Switching Dual-Wavelength Fiber Lasers

Tan

2024

HSET

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Compared with other lasers, fiber laser is widely used in optic communication, industrial production, biomedical sciences, and other fields because of its excellent technical performance, low manufacturing cost, mature technology, high conversion efficiency, high stability, and many other advantages. Recently, two new optical fiber communication techniques that are quickly evolving are Wavelength Division Multiplexing (WDM) and Dense Wavelength Division Multiplexing (DWDM). As a result, multiwavelength and wavelength-tunable fiber lasers were created to address the demand for optical communication systems with high throughput, high quality, and high speed. Due to their advantages in lowering equipment complexity, enhancing network flexibility, enhancing fiber system integration, etc., switching dual-wavelength fiber lasers based on Array Waveguide Grating (AWG) have received a lot of attention. This paper studies two switching dual-wavelength fiber laser based on AWG. Firstly, the basic structure of Erbium-doped Fiber Laser (EDFL) is analyzed based on the basic principle of Erbium-Doped Fiber (EDF). In addition, the working principle of AWG is analyzed emphatically. Finally, AWG-based switching dual-wavelength fiber lasers in linear/ring cavity, which achieve that the adjustable wavelength intervals between 0.8nm to 12nm, are verified and discussed experimentally. Additionally, experimental data shows that the dual-wavelength lasing power is stable and equal.

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Numerical simulation of optimization the NCF dimension based on spectral response in optic filter

Saloom,

Al-Dergazly

2024

J Opt

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A switchable multi-wavelength mode-locked fiber laser based on a multi-mode interference device

Cited by 3 publications

References 32 publications

Switchable mode-locked ytterbium-doped fiber laser based on macrobending loss tuning of figure-eight knot fiber structure

Switchable mode-locked ytterbium-doped fiber laser based on macrobending loss tuning of figure-eight knot fiber structure

Research on AWG-based Switching Dual-Wavelength Fiber Lasers

Numerical simulation of optimization the NCF dimension based on spectral response in optic filter

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