An inhomogeneous theoretical model for analysis of PbSe quantum-dot-doped fiber amplifier

2009 ◽  
Vol 282 (22) ◽  
pp. 4449-4454 ◽  
Author(s):  
A.R. Bahrampour ◽  
H. Rooholamini ◽  
L. Rahimi ◽  
A.A. Askari
Keyword(s):  
Theoretical Model ◽  
Quantum Dot ◽  
Fiber Amplifier

PbS Quantum-Dot-Doped Fiber Amplifier in NIR S-C-L Ultra-Broad Waveband with Low Noise

2018 ◽  
Vol 38 (10) ◽  
pp. 1006006 ◽  
Author(s):  
程成 Cheng Cheng ◽  
吴昌斌 Wu Changbin
Keyword(s):  
Quantum Dot ◽  
Fiber Amplifier ◽  
Low Noise ◽  
Pbs Quantum Dot

scholarly journals Digitally Chirped Multilayer Quantum Dot Lasers with Dual-Wavelength Lasing Emissions

2019 ◽  
Vol 9 (11) ◽  
pp. 2246
Author(s):  
Yi-Jan Sun ◽  
Pin-Hsien Hsieh ◽  
Gray Lin
Keyword(s):  
Theoretical Model ◽  
Quantum Dot ◽  
Ground State ◽  
Slope Efficiency ◽  
Injection Current ◽  
Dual Wavelength ◽  
Quantum Dot Lasers ◽  
Simulation Results ◽  
Current Characteristics

The dual-wavelength lasing emissions of digitally chirped multilayer quantum dot (QD) lasers are investigated both experimentally and theoretically. The two lasing wavelengths are both identified as ground-state (GS) emissions but originated from different stacks of QD multilayers. The lasing spectra exhibited broadening and splitting properties by injecting more current. Moreover, the wavelength-resolved light-current characteristics reveal that first GS lasing intensity upon the threshold of second GS transitions neither saturates nor droops with increasing injection current, but increases with slightly reduced slope efficiency. A theoretical model is developed for digitally chirped multilayer QD lasers. The simulation results qualitatively reproduce the experimental observations.

scholarly journals Numerical Simulation of 980 nm-LD-Pumped Yb3+-Er3+-Tm3+-Codoped Fiber Amplifier for 1500 nm and 1600 nm Bands

2009 ◽  
Vol 2009 ◽  
pp. 1-8
Author(s):  
Chun Jiang
Keyword(s):  
Numerical Simulation ◽  
Theoretical Model ◽  
Pump Power ◽  
Fiber Length ◽  
Fiber Amplifier ◽  
Numerical Results ◽  
Experimental Result ◽  
Signal Wavelength ◽  
Gain Spectra ◽  
Good Agreement

The theoretical model of Yb3+-Er3+-Tm3+-codoped fiber amplifier pumped by 980 nm laser is proposed, and the rate and power propagation equations are numerically solved to analyze the dependences of the gains at 1500 nm and 1600 nm bands on the activator concentrations, fiber length, pump power, and signal wavelength. The numerical results show that our model is in good agreement with experimental result, and with pump power of 200 mW and fiber length varying from 0.15 to 1.5 m, the gains at the two bands may reach 10.0–20.0 dB when the codoping concentrations of Yb3+, Er3+, and Tm3+ are in the ranges 1.0–3.0×1025, 1.0–3.0×1024, and 1.0–3.0×1024 ions/m3, respectively. The fiber parameters may be optimized to flatten the gain spectra.

scholarly journals A semiconductor nanocrystal PbSe quantum dot fiber amplifier

2006 ◽  
Vol 55 (8) ◽  
pp. 4139
Author(s):  
Cheng Cheng ◽  
Zhang Hang
Keyword(s):  
Quantum Dot ◽  
Fiber Amplifier ◽  
Semiconductor Nanocrystal
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