A5038453294- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Photonic Crystal and Fiber Optics
Shanghai University
2018-2020
Via using an L-band optimized in-fiber polarizing grating device, a GHz femtosecond passively harmonic mode-locked Er-doped fiber laser based on nonlinear polarization rotation is first demonstrated. In total, 4.22 pulses with the duration of 810 fs and super-mode suppression ratio (SMSR) 32 dB are obtained under pump power 712 mW corresponding to 215 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> order. The central wavelength 1581.7...
We experimentally demonstrate a harmonic-order controllable L-band Er-doped passively mode-locked fiber laser based on nonlinear polarization rotation (NPR). Distinct from all previous reports, we find that the intracavity birefringence is able to control harmonic order of laser. Experimentally, under constant pump power 704 mW, can be tuned 113th 39th monotonically by adjusting controller orientation only. The corresponding repetition rate changes 2.21 0.77 GHz simultaneously. Remarkably,...
L-band passively harmonic mode-locked (PHML) fiber lasers are important because various practical applications, such as high-speed optical sampling, dense wavelength division multiplexed (DWDM) systems and material processing, etc. Therefore, PHML have been widely concerned in recent years. In 2012, J. Du et al experimentally achieved pulses by utilizing graphene a saturable absorber (SA). Under certain pumping power, 2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
We have demonstrated a 1.92 GHz L-band passively harmonic mode-locked Er-doped fiber laser based on nonlinear polarization rotation using 45° tilted grating for the first time.
We demonstrate a 1.4 GHz-range frequency-tunable Er-doped passively harmonic mode locked fiber laser based on nonlinear polarization rotation. Under fixed pump power, orders can be tuned continuously by merely adjusting controllers.
We demonstrated a wavelength-tunable passively mode-locked erbium-doped fiber laser based on carbon nanotube and intermodal interference of the microfiber. Continuously tuning range from 1569.6 nm to 1561.57 is achieved under single pulse operation.