Design curves based optimization and fabrication of a high gain Yb-Er co-doped optical amplifier based on phosphate glasses

We present the fabrication and characterization of a short core pumped fiber amplifier made of Yb3+-Er3+codoped phosphate glasses. The 27 mm long amplifier provides a maximum internal gain of 10.7 dB for a signal of −30 dBm at 1535 nm with a 479 mW pump power operating at 975.6 nm. This leads to a gain of 4.0 dB/cm, which compares favorably to other recent works.

Download Full-text

GeO2 Modified High-Concentration Er3+/Yb3+ Co-Doped Phosphate Glasses for 1.5 μm High Gain Laser

ECS Journal of Solid State Science and Technology ◽

10.1149/2162-8777/ac3447 ◽

2021 ◽

Author(s):

Zigang Zhao ◽

Yingxin Sun ◽

Lisha Wang ◽

Kun Zhao ◽

Fengxin Xin ◽

...

Keyword(s):

High Gain ◽

Phosphate Glasses ◽

High Concentration ◽

Co Doped

Download Full-text

Preparation and Spectral Properties of Er3+/Yb3+ Co-Doped Phosphate Glass Active Optical Fiber

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.391-392.1022 ◽

2011 ◽

Vol 391-392 ◽

pp. 1022-1026

Author(s):

Fang Tan ◽

Feng Xia Yu ◽

Ling Fei Wang

Keyword(s):

Rare Earth ◽

Optical Fiber ◽

Concentration Ratio ◽

Fiber Amplifier ◽

High Gain ◽

Phosphate Glasses ◽

Rare Earth Ions ◽

Energy Transfer Mechanism ◽

Optical Fiber Amplifier ◽

Co Doped

High gain, rare-earth ions co-doped multicomponent phosphate glasses with different doped concentration ratio were prepared and investigated by means of absorption and fluorescence spectroscopy in order to investigate the influence of different doped concentration ratio on material optical properties. The main results showed that there was a strongest absorption at 980nm and saturated at 1530nm when Er3+and Yb3+concentration ratio was 4:1, which is the optimum ratio. It is also demonstrated that reaction and energy transfer mechanism between different ions in rare-earth co-doped system, which is significant for their interest in the fields of optical fiber amplifier and laser.

Download Full-text

Influence of Y2O3 Content on Structural, Optical, Spectroscopic, and Laser Properties of Er3+, Yb3+ Co-Doped Phosphate Glasses

Materials ◽

10.3390/ma14144041 ◽

2021 ◽

Vol 14 (14) ◽

pp. 4041

Author(s):

Karel Veselský ◽

Vilma Lahti ◽

Laeticia Petit ◽

Václav Prajzler ◽

Jan Šulc ◽

...

Keyword(s):

Emission Cross Section ◽

Substantial Reduction ◽

Phosphate Glasses ◽

Strong Impact ◽

Small Influence ◽

Wavelength Tunability ◽

Diode Pumped ◽

Y2o3 Content ◽

Oh Content ◽

Co Doped

The influence of the addition of Y2O3 on the structural, spectroscopic, and laser properties of newly prepared Er, Yb-doped strontium-sodium phosphate glass was investigated. While the addition of Y2O3 has a small influence on the absorption spectra and fluorescence lifetime, it has a strong impact on the emission cross-section and on OH− content. The glasses were used as the active medium for diode-pumped laser emitting at 1556 nm. The increase in Y2O3 content leads to a significant 35% increase in laser slope efficiency up to 10.4%, but at the expense of the substantial reduction of the wavelength tunability from 82 to 54 nm.

Download Full-text