A 4OAMx4WDM switching experiment has been carried out combining an innovative integrated tunable OAM multiplexer based on 4-concentric omega-shaped silicon waveguides and a refractive element-based OAM demultiplexer; operation is demonstrated up to 120Gb/s.
This paper presents a systematic parameter study on mesh pattern for optically transparent flexible antenna with feedline. In implementing a transparent flexible antenna using a metal mesh, transparency and performance of antenna and feedline are opposite factors. To understand how both elements are affected by the design parameters of the mesh, we analyze the performance of the feedlines and antennas according to the design parameters of diamond and square meshes. Moreover, the effect of the difference in the shape of diamond mesh and square mesh on performance is analyzed. The measured results of the fabricated samples offer the feasibility of implementing transparent feedlines and antennas with similar performance to nontransparent feedlines and antennas.
Meshed ground planes have been used in a flexible printed circuit board (FPCB) to raise the characteristic impedance of a stripline to 50 Ω. However, the characteristic impedance varies considerably with its position on the meshes. An offset mesh structure is proposed to address this issue. Both simulation and measurement results verify its effectiveness.
We propose an OAM converter exploiting an innovative integrated OAM multiplexer based on concentric omega-shaped waveguides. The OAM converter, which can operate on signals multiplexed both in OAM and wavelength domain, is successfully tested up to 100Gb/s with real data-traffic.
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