Tunable phase-shifted fiber Bragg grating based on a microchannel fabricated by a femtosecond laser

Zeng, Li; Sun, Xiaoyan; Chang, Zikun; Hu, Youwang; Duan, Ji’an

doi:10.3788/col202119.030602

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…However, adjusting PC 2 will change the polarization hole burning effect (PHB) in the laser cavity, which may change the loss and gain of certain wavelengths. When the loss is greater than the gain, the lasers cannot be output, which will eventually lead to a change in the number of output wavelengths [17,20,21] .…”

Section: Principle Of the Cascaded Filtermentioning

confidence: 99%

Tunable and wavelength interval precisely controlled erbium-doped fiber laser by employing the fused taper technology

Zhao

Ruan

et al. 2022

Chin. Opt. Lett.

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A tunable multi-wavelength erbium-doped fiber laser with precise wavelength interval control is reported theoretically and experimentally in this paper. It is made up of a Mach-Zehnder interferometer (MZI) filter and a Sagnac filter and supplemented by the four-wave-mixing effect. Compared with other filters, the proposed MZI filter based on the fused taper technology can change the wavelength interval more flexibly. The experiment result shows that wavelength tuning can be achieved, and the tuning range can reach ∼15 nm. Moreover, the variation in the number of wavelengths is also realized. The maximum side-mode suppression ratio can reach 39 dB.

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Section: Principle Of the Cascaded Filtermentioning

confidence: 99%

Tunable and wavelength interval precisely controlled erbium-doped fiber laser by employing the fused taper technology

Zhao

Ruan

et al. 2022

Chin. Opt. Lett.

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“…Our research group presented a method of PS-FBG fabrication by femtosecond laser selective etching, which can accurately control the phase shift [ 60 ]. Firstly, an FBG was inscribed in SMF using the femtosecond laser direct writing technique.…”

Section: Phase Shifted Fiber Bragg Grating Sensorsmentioning

confidence: 99%

Fabrication and Sensing Application of Phase Shifted Bragg Grating Sensors

Sun

Zeng

et al. 2022

Materials

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As a special kind of Bragg grating, phase-shifted fiber Bragg grating (PS-FBG) has attracted extensive attention because of its extremely narrow transmission window and excellent sensing performance. The main purpose of this manuscript is to discuss the PS-FBG with special sensing characteristics and explore the influence of different inscription technologies on the sensing characteristics of PS-FBG by comparing the existing inscription methods. The sensing characteristics, advantages and disadvantages of PS-FBG with different structures are analyzed.

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“…Additional advantages are their ease of implementation for both point and quasi-distributed measurements, their adaptability to a wide variety of applications such as those in the oil and gas sectors or electromagnetic environments, and their cost-effectiveness. The intrigue in fiber gratings, which are characterized by a periodic modulation of the refractive index within the core or cladding of a fiber along its direction of propagation, has been widespread among scholars globally [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. These fiber gratings are categorically divided based on their operational principles into two main types: fiber Bragg gratings (FBGs) and long-period fiber gratings (LPFGs).…”

Section: Introductionmentioning

confidence: 99%

Mechanically Induced Long-Period Fiber Gratings and Applications

Ran,

Chen,

Wang

et al. 2024

Photonics

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Long-period fiber gratings (LPFGs) functioning as band-reject filters have played a pivotal role in the realm of optical communication. Since their initial documentation in 1996, LPFGs have witnessed rapid advancements in areas such as optical sensing, the equalization of optical amplification, and optical band-pass filtering, etc. The unique attributes of optical fiber-based grating, including their miniaturized size, cost-effectiveness, and immunity to electromagnetic interference, have contributed significantly to various sectors over the last two decades. This paper presents a review of the evolution of LPFGs, with a specific focus on the progression and current trends of mechanically induced long-period fiber gratings. It offers a concise overview of coupled-mode theory, the fabrication processes, the merits, and the limitations associated with mechanically induced LPFGs. Moreover, this review elucidates the application methodologies of mechanically induced LPFGs and anticipates future directions in this field.

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Tunable phase-shifted fiber Bragg grating based on a microchannel fabricated by a femtosecond laser

Cited by 5 publications

References 4 publications

Tunable and wavelength interval precisely controlled erbium-doped fiber laser by employing the fused taper technology

Tunable and wavelength interval precisely controlled erbium-doped fiber laser by employing the fused taper technology

Fabrication and Sensing Application of Phase Shifted Bragg Grating Sensors

Mechanically Induced Long-Period Fiber Gratings and Applications

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