AMPLIFICATION AND LASING CHARACTERISTICS OF THULIUM YTTERBIUM CO-DOPED FIBER

2015 ◽  
Vol 74 (8) ◽  
Author(s):  
M. T. Ahmad ◽  
A. A. Latiff ◽  
Z. Zakaria ◽  
Z. Jusoh ◽  
H. Ahmad ◽  
...  
Keyword(s):  
Pump Power ◽  
Input Signal ◽  
Signal Power ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Maximum Gain ◽  
Input Signal Power ◽  
Nonlinear Polarization Rotation ◽  
Co Doped

The amplification and lasing characteristics of the newly developed Thulium-Ytterbium co-doped fiber (TYDF) are investigated. It is obtained that both TYDF amplifier and laser operate at 1950 nm region. The maximum gain of 22.4 dB is obtained for 1942 nm signal when the 980 nm multimode pump power, TYDF length and input signal power are fixed at 1.2 W, 5 m and -20 dBm, respectively. At 5 m long of TYDF, the laser produces two prominent lines at 1960 nm and 1965 nm with peak powers of 2.8 dBm and 3.1 dBm, respectively due to the nonlinear polarization rotation (NPR) effect in the cavity.

All-fiber all-normal-dispersion passively mode-locked neodymium-doped fiber laser operation at 1064 nm

Laser Physics ◽  
2022 ◽  
Vol 32 (2) ◽  
pp. 025102
Author(s):  
Liwei Xu ◽  
Xiaohan Chen ◽  
Ming Li ◽  
Bin Zhang ◽  
Qiongyu Hu ◽  
...  
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Average Output Power ◽  
Laser Operation ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Average Output ◽  
Normal Dispersion ◽  
Maximum Average Output Power ◽  
Nonlinear Polarization Rotation

Abstract In this work, we report an all-fiber Nd-doped passively mode-locked fiber laser based on nonlinear polarization rotation mechanism operating in the 1.06 μm region. When the pump power was 300 mW, a pulse with a maximum average output power of 0.63 mW, a narrowest pulse duration of 1.22 ps and a pulse repetition rate of 14.25 MHz was obtained.

Investigation of ellipticity and pump power in a passively mode-locked fiber laser using the nonlinear polarization rotation technique

2017 ◽  
Vol 15 (5) ◽  
pp. 051402-51406 ◽  
Author(s):  
H. Ahmad H. Ahmad ◽  
S. I. Ooi S. I. Ooi ◽  
M. Z. A. Razak M. Z. A. Razak ◽  
S. R. Azzuhri S. R. Azzuhri ◽  
A. A. Jasim A. A. Jasim ◽  
...  
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Rotation Technique ◽  
Nonlinear Polarization Rotation

scholarly journals Observation of Dissipative Bright Soliton and Dark Soliton in an All-Normal Dispersion Fiber Laser

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Chunyang Ma ◽  
Bo Gao ◽  
Ge Wu ◽  
Tian Zhang ◽  
Xiaojian Tian
Keyword(s):  
Numerical Simulation ◽  
Pump Power ◽  
Lower Bound ◽  
Fiber Laser ◽  
Dark Soliton ◽  
Bright Soliton ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Normal Dispersion ◽  
Nonlinear Polarization Rotation

This paper proposes a novel way for controlling the generation of the dissipative bright soliton and dark soliton operation of lasers. We observe the generation of dissipative bright and dark soliton in an all-normal dispersion fiber laser by employing the nonlinear polarization rotation (NPR) technique. Through adjusting the angle of the polarizer and analyzer, the mode-locked and non-mode-locked regions can be obtained in different polarization directions. Numerical simulation shows that, in an appropriate pump power range, the dissipative bright soliton and dark soliton can be generated simultaneously in the mode-locked and non-mode-locked regions, respectively. If the pump power exceeds the top limit of this range, only dissipative soliton will exist, whereas if it is below the lower bound of this range, only dark soliton will exist.

scholarly journals Q-switched mode locking noise-like pulse generation from a thulium-doped all-fiber laser based on nonlinear polarization rotation

2021 ◽  
pp. 100115
Author(s):  
R. López Estopier ◽  
A. Camarillo Avilés ◽  
M. Bello Jiménez ◽  
O. Pottiez ◽  
M. Durán Sánchez ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Mode Locking ◽  
Pulse Generation ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Nonlinear Polarization Rotation

Sideband controllable soliton all-fiber ring laser passively mode-locked by nonlinear polarization rotation

2009 ◽  
Vol 6 (8) ◽  
pp. 582-585 ◽  
Author(s):  
Z.C. Luo ◽  
A.P. Luo ◽  
W.C. Xu ◽  
C.X. Song ◽  
Y.X. Gao ◽  
...  
Keyword(s):  
Ring Laser ◽  
Polarization Rotation ◽  
Fiber Ring Laser ◽  
Nonlinear Polarization ◽  
Fiber Ring ◽  
Nonlinear Polarization Rotation
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