WebJun 1, 2024 · Abstract: A fully numerical method for designing efficient adiabatic mode evolution structure (AMES) (referred to as NAMES) is introduced, which can be applied to adiabatic taper, coupler, splitter, mode converter, and a wide range of AMES based devices. The method can compute efficient adiabatic waveguiding shapes for these …
Mode-evolution-based silicon-on-insulator 3 dB coupler using fast …
WebApr 6, 2024 · Conventional non-destructive testing methods are difficult to be applied in defect detection of thermal barrier coating (TBCs) because of some of its characteristics, such as porosity and thin thickness, etc. For detecting surface cracks in TBCs, a laser multi-modes scanning thermography (SMLT) method has been developed in this paper, … WebOct 1, 2024 · Here, we propose and experimentally demonstrate a polarization splitter-rotator based on adiabatic mode evolution on the thin-film lithium niobate platform. The measured results for a fabricated device show low insertion losses of <-0.5 dB and large extinction ratios of >20 dB over the 110-nm band. Large fabrication tolerance is also ... ufsp ead
Efficient strip to slot waveguide mode converter using fast quasi ...
WebJan 10, 2024 · Consequently, we can enforce fast adiabatic evolution of the time-dependent DFS, i.e., a system initialised in the DFS remains so at all times 29. However, … WebA short and broadband silicon asymmetric Y-junction two-mode (de)multiplexer is proposed and simulated. An adiabaticity parameter suitable for high index-contrast silicon waveguides is defined. The fast quasiadiabatic dynamics protocol is used to homogeneously distribute adiabaticity over the device length. This protocol limits the power coupled into the … WebJul 31, 2024 · Few of the reported designs of the strip to slot waveguide mode converters are solely based on adiabatic mode evolution [11–13]. For adiabatic mode evolution based V-shaped mode converter and ultra-low loss converter , the coupling efficiency strongly depends upon the sharpness of the taper tip and hence poses challenges in … thomas friedman liz cheney