Designing a silicon waveguide for tunable wavelength conversion in terahertz region

2019 ◽  
Author(s):  
Hasan Pakarzadeh ◽  
Shahrzad Hosseinabadi ◽  
Iraj Sadegh Amiri
Keyword(s):  
Wavelength Conversion ◽  
Silicon Waveguide ◽  
Terahertz Region ◽  
Tunable Wavelength

scholarly journals 15-THz Tunable Wavelength Conversion of Picosecond Pulses in a Silicon Waveguide

2011 ◽  
Vol 23 (19) ◽  
pp. 1409-1411 ◽  
Author(s):  
Minhao Pu ◽  
Hao Hu ◽  
Michael Galili ◽  
Hua Ji ◽  
Christophe Peucheret ◽  
...  
Keyword(s):  
Wavelength Conversion ◽  
Picosecond Pulses ◽  
Silicon Waveguide ◽  
Tunable Wavelength

scholarly journals Tunable Terahertz Wavelength Conversion Based on Optofluidic infiltrated Rib Silicon Waveguides

2021 ◽  
Author(s):  
H. Pakarzadeh ◽  
S. Hosseinabadi ◽  
Iraj Sadegh Amiri
Keyword(s):  
Optical Fibers ◽  
Wavelength Conversion ◽  
Structural Parameters ◽  
Hole Diameter ◽  
Thz Radiation ◽  
Geometrical Parameters ◽  
Silicon Waveguides ◽  
Silicon Waveguide ◽  
Terahertz Region ◽  
Air Hole

Abstract Terahertz (THz) sources for various applications have attracted especial attention. Compared with the standard silica-based optical fibers, silicon waveguides have advantages such as higher refractive index and lower absorption loss over the THz region. In this paper, for the first time, a rib silicon waveguide based on the photonic crystal (PC) idea is designed and by using the scalar modulation instability (SMI) phenomenon, tunable wavelength conversion for generation of THz radiation is simulated. By changing the structural parameters such as the air-hole diameter of the PC and infiltration of optical fluids into the air holes, linear and nonlinear characteristics of the waveguide are controlled and hence the generated THz radiation is considered as a tunable source. Simulation presents the maximum converted wavelength of 326.17µm is obtained when the air-hole diameter is set at d=0.86μm, where pump wavelength is in the normal dispersion regime. Also, we have infiltrated optical fluids into PC air holes in order to change the dispersion properties of the waveguide while keeping the geometrical parameters unchanged. This led to converted wavelengths of 70.5, 76.8 and 107.5 μm, all located in the terahertz region. The loss of this waveguide is less than 0.8 db/cm , which is less than that of previously reported in similar silicon waveguides.

Quantum-Dash Mode-Locked Lasers for Tunable Wavelength Conversion on a 100 GHz Frequency Grid

2012 ◽  
Vol 4 (9) ◽  
pp. A69 ◽  
Author(s):  
Yousra Ben M’Sallem ◽  
Alexandre Shen ◽  
François Lelarge ◽  
Frédéric Pommereau ◽  
Dalila Make ◽  
...  
Keyword(s):  
Wavelength Conversion ◽  
Quantum Dash ◽  
Frequency Grid ◽  
Tunable Wavelength ◽  
Mode Locked Lasers
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