Low-Loss Silicon Directional Coupler with Arbitrary Coupling Ratios for Broadband Wavelength Operation Based on Bent Waveguides

AH El-Saeed, A Elshazly, H Kobbi… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
… observed in DCs with different waveguide widths [21]. … effective refractive indices related to
bent waveguides should … of the coupler, in contrast to a highly variant coupling behavior of the …

Horizontal directional coupler formed with waveguides of different heights for mode-division multiplexing

WK Zhao, KX Chen, JY Wu… - IEEE Photonics Journal, 2017 - ieeexplore.ieee.org
… , the refractive index … large difference between the effective indices of the LP01 modes of
the SMW and the TMW results in a very small Cr01 (< –55 dB), and, therefore, the crosstalk from

Polymer waveguides enabling scalable low-loss adiabatic optical coupling for silicon photonics

R Dangel, A La Porta, D Jubin, F Horst… - … of selected topics in …, 2018 - ieeexplore.ieee.org
couplers are applied to convert the highly confined optical … In contrast to directional coupling,
adiabatic optical couplingrefractive indices can be different. The big advantage of adiabatic …

Single asymmetric plasmonic antenna as a directional coupler to a dielectric waveguide

D Vercruysse, P Neutens, L Lagae, N Verellen… - Acs …, 2017 - ACS Publications
… been used to detect small refractive index changes by simply … coupled to the waveguide,
we look at the antenna’s different … to make highly directional waveguide couplers. It …

Highly sensitive refractive index sensor based on silicon nitride strip waveguide directional coupler

P Kaur, M Shenoy - IEEE sensors letters, 2018 - ieeexplore.ieee.org
… The two waveguides have different effective refractive indices of the two guided modes, and
very little evanescent coupling would take place between them. To couple light from Wg1 to …

Optical performance of hybrid metal‐insulator‐metal plasmonic waveguide for lowloss and efficient photonic integration

P Kumar, DK Singh, R Ranjan - Microwave and Optical …, 2020 - Wiley Online Library
optical waveguide structures that support largely confined … index of waveguide to move toward
the refractive index of high-index (… , the coupling lengths have been calculated for different

A hybrid-plasmonic-waveguide-based polarization-independent directional coupler

L Zhang, C Pan, D Zeng, Y Yang, Y Yang, J Ma - IEEE Access, 2020 - ieeexplore.ieee.org
waveguides for TE and TM modes is distributed in different … 28]–[31], we propose a low
loss, broadband, and polarization… exhibits different effective mode refractive indices at different

Low-loss directional coupler for the C, L and U bands based on subwavelength gratings

J Vilas, RF De Cabo, I Olivares… - IEEE Photonics …, 2023 - ieeexplore.ieee.org
refractive index engineering through geometrical design [15]… different cr , we fabricated 11
DCs with linearly increasing Np … Said DC exhibits very low excess losses of EL0.5 < −0.28 dB …

Optimization of the interlayer distance for low-loss and low-crosstalk double-layer polymer optical waveguides

F Zhang, C Deng, Y Huang, X Zhang, T Wang - Optics Express, 2023 - opg.optica.org
… for double-layer optical waveguides with different core sizes. An … The TL is exceptionally high
when d is extremely low (eg, d = … , a high exposure dose can increase the refractive index of …

Directional couplers fabricated via a sol–gel route and conventional optical lithography

C Tyszkiewicz, P Karasiński, R Rogoziński - Optical and Quantum …, 2016 - Springer
waveguide is the basis of various planar optical waveguide … As a result different power
divisions are present at the … of the slab waveguides characterized by a high refractive index …