Wavelength-interval-switchable multi-wavelength thulium-doped fiber laser with a nonlinear dual-pass Mach-Zehnder interferometer filter in 2-μm-band

Guo, Ying; Yan, Fengping; Tian, Feng; Qin, Qi; Bai, Zhuoya; Li, Ting; Han, Wenguo; Zhou, Hong; Suo, Yuping

doi:10.1016/j.optlastec.2021.107470

Cited by 23 publications

(3 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The transmission function of the proposed filter is analyzed by Jones's matrix theory. [27][28][29] It is assumed that the fast and slow axes of PMF are parallel to each other and are defined as the xaxis (fast axis) and y-axis (slow axis). The light field intensity E in of the incident light can be expressed as E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 1 ; 1 1 7 ; 3 4 0…”

Section: Principle Analysis Of the Improved Lyot Filtermentioning

confidence: 99%

“…The transmission function of the proposed filter is analyzed by Jones’s matrix theory 27 – 29 It is assumed that the fast and slow axes of PMF are parallel to each other and are defined as the x-axis (fast axis) and y-axis (slow axis). The light field intensity Ein of the incident light can be expressed as Ein=[ExEy]=[cosαsinα],where Ex and Ey represent the projection of the incident light vector on the x−y coordinate axis, respectively, and α is the angle between POL1 and the x axis.…”

Section: Operating Principle and Experimental Setupmentioning

confidence: 99%

See 1 more Smart Citation

Tunable and switchable multi-wavelength random fiber laser based on random distributed feedback and improved Lyot filter

Qi,

Zhou,

Zhang

et al. 2024

Opt. Eng.

View full text Add to dashboard Cite

A tunable and switchable multi-wavelength random fiber laser (MW-RFL) is proposed and experimentally demonstrated in this work, which consists of a random distributed feedback mechanism, an improved Lyot filter, and a nonlinear optical loop mirror (NOLM). The theoretical derivation and simulation analysis of the improved Lyot filter are carried out by using the transfer matrix theory. The results show that by adjusting the polarization controller (PC) in the filter, not only the channel interval can be switched between 0.9 and 0.45 nm, but also the extinction ratio (ER) of the transmission spectrum can be adjusted and the wave peak position can be moved. The feedback mechanism of the proposed laser is provided by the randomly distributed backward Rayleigh scattering generated in the single-mode fiber. By changing the pump laser power, the number of output laser channels will be linearly increased. When the channel interval is kept constant, the wavelength can be tuned within a certain range by carefully adjusting the PC3 in the NOLM. When the channel interval of the spectrum is 0.9 nm, the wavelength tuning ranges of the three and four laser channels are 3.6 and 3.5 nm, respectively. When the channel interval of the spectrum is 0.45 nm, the wavelength tuning ranges of the three and four laser channels are 2.8 and 2.77 nm, respectively. Then the variations of the output spectrum when using 25 km single-mode fiber (SMF) are studied. It is observed that the linewidth and side mode suppression ratio (SMSR) of the laser channel are significantly increased. Finally, the stability of the random laser is discussed, and the maximum central wavelength drift and peak power fluctuation measured at room temperature are 0.05 nm and 0.34 dB, respectively. The average peak power and SMSR are maintained at −4.47 dBm and 34.6 dB, respectively, which confirms that the laser has good stability.

show abstract

Section: Principle Analysis Of the Improved Lyot Filtermentioning

confidence: 99%

Section: Operating Principle and Experimental Setupmentioning

confidence: 99%

Tunable and switchable multi-wavelength random fiber laser based on random distributed feedback and improved Lyot filter

Qi,

Zhou,

Zhang

et al. 2024

Opt. Eng.

View full text Add to dashboard Cite

show abstract

“…Besides, a longer cavity length of fiber laser also would lead to dense multi-longitudinal-mode (MLM) oscillation [8,9]. Hence, to mitigate the MLM behavior for single-longitudinal-mode (SLM) action in the erbium fiber laser, the multi-fiber-ring structure [10], Sagnac scheme [5,11], EDF based saturable absorber (SA) [12,13], Rayleigh backscattering (RB) injection [14,15] and Mach-Zehnder interferometric (MZI) operation [16,17] have been also investigated.…”

Section: Introductionmentioning

confidence: 99%

Use of symmetric sagnac dual-ring scheme for tunable single-mode erbium fiber laser

Chen¹,

Yeh²,

Lin³

et al. 2022

Phys. Scr.

View full text Add to dashboard Cite

In this paper, an erbium-doped fiber (EDF) laser with symmetric Sagnac dual-ring scheme is experimentally studied to achieve tunable and stable continuous-wave (CW) single-longitudinal-mode (SLM) presentation. In the measurement, the obtained wavelength-tuning bandwidth can be reached from 1518.0 to 1578.0 nm based on a C-band EDF gain-medium. Moreover, the corresponding output power, optical signal to noise ratio (OSNR) and wavelength linewidth of the designed EDF laser are studied and performed simultaneously.

show abstract

Advancements in the Use of Artificial Saturable Absorbers for Modelocking of 2 µm Ultrafast Fiber Lasers

Raj R,

Saha,

Mondal

2024

Annalen der Physik

View full text Add to dashboard Cite

Over the past decade, the research on modelocked 2 fiber lasers has increased rapidly. Conventionally, modelocking is achieved with the existing quantum well structures as well as 2D materials classified as Real Saturable Absorbers. As time progressed and keeping in mind the versatility, stability and robustness, demonstration of 2 fiber lasers that are modelocked by Artificial Saturable Absorbers (ASA) gained importance. This class of Saturable Absorbers exhibits interesting properties, which can make them the best candidate to replace real material‐based Saturable Absorbers. The progress of ASA based modelocking schemes in the 2 regime is explored and discussed in detail, along with its underlying physics, citing the various uses and the increasing market for ultrafast fiber lasers. Toward the end of this review, a comparison is drawn between different ASAs based modelocking schemes to get the most favorable conditions for desired output parameters as per one's needs. These fiber lasers with an all‐fiber ASA foundation have potential uses in the fields of medical, LIDAR, mid‐IR generation, environmental sensing, industrial, and defence.

show abstract

Wavelength-interval-switchable multi-wavelength thulium-doped fiber laser with a nonlinear dual-pass Mach-Zehnder interferometer filter in 2-μm-band

Cited by 23 publications

References 32 publications

Tunable and switchable multi-wavelength random fiber laser based on random distributed feedback and improved Lyot filter

Tunable and switchable multi-wavelength random fiber laser based on random distributed feedback and improved Lyot filter

Use of symmetric sagnac dual-ring scheme for tunable single-mode erbium fiber laser

Advancements in the Use of Artificial Saturable Absorbers for Modelocking of 2 µm Ultrafast Fiber Lasers

Contact Info

Product

Resources

About