Compact dual-wavelength thulium-doped fiber laser employing a double-ring filter

Abstract

In this paper, we report on stable dual-wavelength operation of a thulium-doped compact all-fiber laser using a double-ring filter as the wavelength selective element. Simultaneously lasing at 2014.4 and 2018.4 nm has been obtained via tuning the polarization controllers to adjust the relative gain and loss of the laser cavity. The side mode suppression ratios are greater than 52 dB and the output power difference between the two lasing lines is less than 0.08 dB under 2.6 W of incident pump power.

Dissipative soliton resonance in a simple linear cavity Tm3+-doped double clad fiber laser with dispersion management

“…Since wavelength covers the absorption peak/band of water molecules and many organic gases, 2 μm fiber lasers can hold great potential applications in the field of medical treatment, material processing, light detection and ranging, etc. 2 μm fiber lasers generally adopt Tm 3+ /Ho 3+ ions doped/codoped fibers as host lasing mediums [1][2][3][4][5][6][7][8][9][10]. Compared with Ho 3+ ones, Tm 3+ -doped fiber lasers (TDFLs) are more attractive due to their easily accessible high power pump sources (e.g.…”

“…Compared with Ho 3+ ones, Tm 3+ -doped fiber lasers (TDFLs) are more attractive due to their easily accessible high power pump sources (e.g. 793 nm laser diodes (LDs)) and ultra-broad gain bandwidth [1][2][3][4][5]. Recently, the investigation of TDFLs focuses on wavelength tunable capacity [2][3][4][5], output power [3,4], single frequency operation [11][12][13][14], and output pulse energy [13][14][15], etc, especially the generation of large energy pulse.…”

Tunable dual-wavelength operation of an all-fiber thulium-doped fiber laser based on tunable fiber Bragg gratings

“…Different techniques have been proposed to reduce the competition based on the adjustment of intra-cavity losses. These techniques include the use of optical fiber devices such as polarization controllers (PCs) [7,8], variable optical attenuators (VOAs) [9], optical fiber interferometers [10][11][12][13], and narrow bandwidth filters [14].…”

Estudio experimental de acopladores bicónicos de fibra óptica aplicados al desarrollo de multiplexores por división de longitud de onda

“…Con la introducción de nuevos medios de ganancia en las cavidades láser de fibrá optica, el acoplador debe ser objeto de constante desarrollo en su diseño con la finalidad de operar en diferentes longitudes de onda. No obstante, el alcance experimental del dispositivo contempla aplicaciones más complejas que la simple división de haces; un acoplador bicónico 2×2 (constituido por dos puertos de entrada y dos puertos de salida) fabricado mediante un proceso debidamente controlado, produce un espectro sinusoidal de transmisión dependiente de la longitud de onda de fabricación, de tal manera que una manipulación adecuada del proceso de fabricación puede permitir que los acopladores operen en una extensa gama de aplicaciones como divisores de polarización [7,8], filtros [9,10], sensores de fibraóptica [11][12][13] y componentes para el multiplexado de longitudes de onda (WDM, wavelength division multiplexer) [14,15], entre otros. En el caso específico de un WDM, estos dispositivos típicamente están constituidos por un puerto de entrada y dos puertos de salida, y una de sus aplicaciones más esenciales es en cavidades láser de fibraóptica, donde los haces de bombeo y señal se multiplexan para formar una cavidad todo-fibra.…”