Switchable Multi-Wavelength Thulium-Doped Fiber Laser Using a Cascaded or Two-Segment Sagnac Loop Filter

Li, Ting; Feng, Yan; Cheng, Daizhan; Qin, Qi; Guo, Ying; Tian, Feng; Bai, Zhuoya; Du, Xiaoze; Suo, Yuping; Zhou, Hong

doi:10.1109/access.2022.3146414

Cited by 10 publications

(2 citation statements)

References 27 publications

(24 reference statements)

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“…Until 2022, Sulaiman et al researched the effect of a hybrid optical amplifier on a multi-wavelength fiber laser utilizing the Sagnac loop mirror interferometer [18]. Embedding a PC in the loop has a certain tuning effect [19], but the connection between the PC and the optical coupler (OC) brings greater insertion loss.…”

Section: Introductionmentioning

confidence: 99%

A C-band widely tunable and switchable erbium-doped fiber laser based on a Sagnac-like loop embedded in Lyot filter

Zhou¹,

Tong²,

Zhang³

et al. 2023

Laser Phys.

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In this paper, a new type of widely tunable and switchable multi-wavelength erbium-doped fiber laser based on a Sagnac-like loop embedded in Lyot filter is proposed. The nonlinear polarization rotation effect is obtained by adjusting two polarization controllers (PCs). The polarization-dependent isolator and the Sagnac-like loop are used as the basic structure to realize the wide tuning and wavelength switching in C-band. Compared with the traditional Lyot filter, the Sagnac-like loop is used to replace the segment of polarization-maintaining fiber, and a more uniform comb spectrum can be obtained by this filter. The tunable and switchable wavelengths can be achieved by adjusting the PCs based on the nonlinear effect of the loop. The laser can emit single-, dual-, triple-, quad- and quintuple-wavelengths. The optical signal-to-noise ratios all exceed 43 dB. It can also be adjusted to partial wavelength intervals for quad-wavelength and quintuple-wavelength. The tuning range can reach the full range of the C-band, and the laser efficiency can reach the practical application standard. It can be applied to some precision instruments and equipment.

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Section: Introductionmentioning

confidence: 99%

A C-band widely tunable and switchable erbium-doped fiber laser based on a Sagnac-like loop embedded in Lyot filter

Zhou¹,

Tong²,

Zhang³

et al. 2023

Laser Phys.

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“…Zhang et al reported a six-wavelength-switchable TDFL based on a polarizationmaintaining sampled FBG, in which the wavelength fluctuation was as low as 0.71 dB [14]. Li et al reported a stable and tunable TDFL based on two Sagnac loop filters, where the wavelength tuning range was 16.36 nm, OSNR was up to 55 dB for dual-wavelength laser output, and maximum and minimum wavelength spacings were 21.78 nm and 1.50 nm, respectively [15].…”

Section: Introductionmentioning

confidence: 99%

Multi-wavelength-tunable thulium-doped fiber laser generation based on dual-pass Mach–Zehnder and Sagnac loop hybrid filters

Qin¹,

Li²,

Wei³

et al. 2022

Laser Phys.

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A wavelength-tunable thulium-doped fiber laser (TDFL) based on a Mach–Zehnder (MZ) filter and Sagnac loop was proposed in this study. The dual-pass MZ fiber filter, and Sagnac loop were fabricated to operate as reflectors in a linear cavity. The laser operating threshold was set to 138 mW. A single-wavelength laser output with an optical signal-to-noise ratio (OSNR) of up to 38 dB was realized with a tuning range of 1854–1882 nm. The tuning range was obtained with a tuning interval of 6 nm by tuning the polarization controller (PC), which yielded a power shift of less than 0.42 dB. Stability of the single-wavelength center wavelength power fluctuation was less than 0.39 dB within 20 min. When the laser was operated in the dual-wavelength condition, the OSNR was more than 30.5 dB, and the power fluctuation was less than 0.89 dB within 20 min at room temperature. The tunable triple-wavelength laser emission could be realized experimentally by adjusting the PC, which yielded an OSNR of more than 30.8 dB. The proposed TDFL is suitable for fiber-sensing system applications.

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Switchable and tunable erbium-doped fiber laser with the embedded Lyot filter

et al. 2023

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Switchable Multi-Wavelength Thulium-Doped Fiber Laser Using a Cascaded or Two-Segment Sagnac Loop Filter

Cited by 10 publications

References 27 publications

A C-band widely tunable and switchable erbium-doped fiber laser based on a Sagnac-like loop embedded in Lyot filter

A C-band widely tunable and switchable erbium-doped fiber laser based on a Sagnac-like loop embedded in Lyot filter

Multi-wavelength-tunable thulium-doped fiber laser generation based on dual-pass Mach–Zehnder and Sagnac loop hybrid filters

Switchable and tunable erbium-doped fiber laser with the embedded Lyot filter

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