Publications by authors named "Siamak Dawazdah Emami"
Stimulated Brillouin scattering (SBS) is useful, among others for generating slow light, sensing and amplification. SBS was previously viewed as a poor method due to the limitation on optical power in high-powered photonic applications. However, considering the many possible applications using SBS, it is now of interest to enhance SBS in areas of Brillouin frequency shift together with Brillouin Gain.
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- This paper discusses the development of tunable thulium-doped mode-locked lasers that operate in the short wavelength range of 1702 to 1764 nm and 1788 to 1831 nm.
- It combines advanced techniques like partial amplified spontaneous emission suppression, bidirectional pumping, and nonlinear polarization rotation to achieve these results.
- The research highlights a specially modified photonic crystal fiber that helps manage losses, enabling effective lasing below 1800 nm and providing a compact solution for tunable all-fiber lasers.
This paper describes a low pass filter based on photonics crystal fiber (PCF) partial ASE suppression, and its application within a 1.7 µm to 1.8 µm band thulium-doped fiber amplifier (TDFA) and a thulium-doped fiber laser (TDFL).
View Article and Find Full Text PDFThis paper details the effect of Thulium and Bismuth concentration ratio on gain-shift at 1800 nm and 1400 nm band in a Thulium-Bismuth Doped Fiber Amplifier (TBDFA). The effect of Thulium and Bismuth's concentration ratio on gain shifting is experimentally established and subsequently numerically modeled. The analysis is carried out via the cross relaxation and energy transfer processes between the two dopants.
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