Abstract
BackgroundAs a significant terahertz functional device, terahertz beam splitters with high performance are highly required to meet the need for terahertz communication, terahertz image, and terahertz sensor systems.ResultsThe proposed 1×6 power splitter becomes 1×4 power splitter with the aid of the localized temperature change at the frequency of 1.0THz. The total output power is equivalent to 97.8% of the input power for the six-channel splitter and 95.4% for the four-channel splitter. The dimension of the device is of 35a×27a.ConclusionsA temperature-controlled terahertz power divider based on photonic crystal multimode interference structure and Y-junction photonic crystal waveguides is an efficient mechanism for the power divider of terahertz waves. The proposed device paves a promising way for the realization of terahertz wave integrated device.
Highlights
As a significant terahertz functional device, terahertz beam splitters with high performance are highly required to meet the need for terahertz communication, terahertz image, and terahertz sensor systems
We propose a temperature-controlled multi-channel terahertz wave power splitter based on Yjunction photonic crystal waveguides and multi-mode interference photonic crystal structure
According to the Figure, the terahertz wave transmits through the four Y-junction photonic crystal waveguides and a multi-mode interference photonic crystal structure, distributes its energy into six output ports with the equal power
Summary
Conclusions: A temperature-controlled terahertz power divider based on photonic crystal multimode interference structure and Y-junction photonic crystal waveguides is an efficient mechanism for the power divider of terahertz waves. The devices for manipulation the terahertz wave include such as filters, power dividers, switches, de-multiplexers, absorbers, modulators, and so forth [1,2,3,4,5]. Power splitter is one key component in terahertz wave communication system, it becomes important to study a terahertz power divider with high performance. Berry et al proposed a terahertz beam splitter using sub-wavelength silver grating fabricated on a high-density polymer substrate. As a significant terahertz functional device, terahertz beam splitters with high performance are highly required to meet the need for terahertz communication, terahertz image, and terahertz sensor systems
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