Wavelength-tunable thulium-doped single mode fiber laser based on the digitally programmable micro-mirror array

Shin, Woojin; Lee, Y.L.; Yu, Bong-Ahn; Noh, Young Chul; Ahn, Tae-Jung

doi:10.1016/j.yofte.2013.03.004

Cited by 21 publications

(12 citation statements)

References 14 publications

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“…With the increase of rotation ratio, the DMD surface tends to be a plane mirror and its periodic grating structure weakens gradually. Thus the performance of the single-mode selection will be weakened [18]. At the same time, the other modes will be strengthened.…”

Section: Methods and Resultsmentioning

confidence: 99%

Regulating the Single-Mode Lasing Intensity of Semiconductor Lasers Without Wavelength Shift

Wang

2020

IEEE Photonics J.

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A simple method to regulate the single-mode lasing intensity of semiconductor lasers without wavelength shift is demonstrated in this paper. The basic component is a digital micro-mirror device (DMD), which can be taken as an adjustable two-dimensional grating by its special structure. The lasing peak wavelength and peak intensity are respectively regulated by the DMD angular position and the DMD setting. The lasing peak wavelength could be tuned over by rotating the DMD. Meanwhile, the lasing peak intensity could be regulated by the DMD setting, which generates optical feedback digitally. The regulating speed is very high (up to 10 kHz) and has no wavelength shift in the lasing mode, which is more stable and faster than the conventional method.

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Section: Methods and Resultsmentioning

confidence: 99%

Regulating the Single-Mode Lasing Intensity of Semiconductor Lasers Without Wavelength Shift

Wang

2020

IEEE Photonics J.

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“…The tuning accuracy of the laser wavelength is 0.0177 nm/pixel, in theory. Considering the used echelle grating has a wide working range from UV to 25 μm, this laser system is convenient to be extended in the 2 μm-band, which has potential applications in the biomedical domain [14,15].…”

Section: Echelle Grating and System Designmentioning

confidence: 99%

Tunable Fiber Laser with High Tuning Resolution in C-band Based on Echelle Grating and DMD Chip

Chen

Dai

et al. 2019

Micromachines

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The tunable fiber laser with high tuning resolution in the C-band is proposed and demonstrated based on a digital micromirror device (DMD) chip and an echelle grating. The laser employs a DMD as a programmable wavelength filter and an echelle grating with high-resolution features to design a cross-dispersion optical path to achieve high-precision tuning. Experimental results show that wavelength channels with 3 dB-linewidth less than 0.02 nm can be tuned flexibly in the C-band and the wavelength tuning resolution is as small as 0.036 nm. The output power fluctuation is better than 0.07 dB, and the wavelength shift is below 0.013 nm in 1 h at room temperature.

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“…Thus, how to achieve high stability, narrow linewidth, and wavelength flexibility with rapid wavelength tuning or selection are the key to successful deployment for thulium-doped fibers lasers (TDFL). The current tuning devices include fiber Bragg grating (FBG) [9][10][11][12][13], F-P cavity [14][15][16], Sagnac fiber ring [17,18], Lyot filter [19][20][21], Mach-Zehnder interferometer [22][23][24], liquid crystal spatial light modulator [25], digital micromirror device (DMD) [26][27][28], and so on. Up to now, a DMD chip as a semiconductor-based addressable micromirror array has drawn considerable attention due to its flexible and fast filtering functionality in optical switching, interconnecting, and lasers.…”

Section: Introductionmentioning

confidence: 99%

Wavelength-Flexible Thulium-Doped Fiber Laser Based on Digital Micromirror Array

et al. 2020

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Wavelength-tunable thulium-doped fiber laser is demonstrated employing a digital micromirror device (DMD) in combination with a fixed grating. The diffraction property of four typical models of DMDs and its steering efficiency for the laser system are analyzed based on two-dimensional grating theory. By spatially modulating reflective patterns on a DMD, the stable, fast, and flexible tuning of lasing wavelength from 1930 nm to 2000 nm is achieved with wavelength tuning accuracy of 0.1 nm. The side-mode suppression ratio is larger than 50 dB around the 2 μm band with 3 dB linewidth less than 0.05 nm. The wavelength drift and power fluctuation are lower than 0.05 nm and 0.1 dB within 1 h at the room temperature, respectively.

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Wavelength-tunable thulium-doped single mode fiber laser based on the digitally programmable micro-mirror array

Cited by 21 publications

References 14 publications

Regulating the Single-Mode Lasing Intensity of Semiconductor Lasers Without Wavelength Shift

Regulating the Single-Mode Lasing Intensity of Semiconductor Lasers Without Wavelength Shift

Tunable Fiber Laser with High Tuning Resolution in C-band Based on Echelle Grating and DMD Chip

Wavelength-Flexible Thulium-Doped Fiber Laser Based on Digital Micromirror Array

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