Ultra-compact silicon mode (de) multiplexer based on directional couplers with subwavelength sidewall corrugations

X Wang, H Yu, Q Zhang, Z Fu, P Xia, Q Huang… - Optics Letters, 2022 - opg.optica.org
… , the interaction between the two coupled modes is greatly … to the reduced refractive index
contrast between waveguide … The bus waveguide uses different widths at the three ADCSWG …

Towards monolithic low-loss silicon nitride waveguides on a mature 200 mm CMOS platform

B Li, D Li, B Tang, P Zhang, Y Yang, R Liu, L Xie, Z Li - Optik, 2022 - Elsevier
… According to the different materials, optical waveguide can be … The refractive index of silicon
nitride (~2.0) is less than that of … Therefore, high quality silicon nitride films are very suitable …

Low-loss tunable add–drop filter assembled by whispering gallery mode microbubble resonator and biconical directional coupler

Y Guo, Y Zhang, G Yi - Optics Communications, 2022 - Elsevier
… propagation constants of two optical waveguides in the uncoupled … refractive index is set to
1, the diameter of the optical … light from the incident waveguide is coupled to different degrees …

Optical Analogs of Rabi Splitting in Integrated WaveguideCoupled Resonators

H Arianfard, J Wu, S Juodkazis… - Advanced Physics …, 2023 - Wiley Online Library
… verify a different way of realizing optical analogs of Rabi … of their refractive indices upon
the phase transition between … weak coupling regime where the resonator with lower loss is …

Silica Waveguide Four-Mode Multiplexer Based on Cascaded Directional Couplers

M Wang, X Sun, T Liu, J Yue, C Sun, D Li, Y Wu… - Photonics, 2023 - mdpi.com
… advantages of compactness, low loss, and mass production. Different PLC structures used
to … the effective refractive index and waveguide width at the optical wavelength of 1550 nm is …

Chiral quantum optics in broken-symmetry and topological photonic crystal waveguides

NV Hauff, H Le Jeannic, P Lodahl, S Hughes… - Physical Review …, 2022 - APS
… These reduced losses occur because the optical mode is … In this work, we study how well
four different PhCWs perform in … We have set the refractive index of the high-index membrane to …

O-band TE-and TM-mode densely packed adiabatically bent waveguide arrays on the silicon-on-insulator platform

H Zafar, B Paredes, J Villegas, M Rasras… - Optics …, 2023 - opg.optica.org
refractive index contrast and, consequently, sharply bent … bent waveguides that are defined
with two different angles of $\… is ultra-low loss and efficient and can carry signals to all optical

Broadband and compact arbitrary ratio curved directional coupler enabled by inverse design

X Liu, Y Zhao, F Gan - Advanced Fiber Laser Conference …, 2024 - spiedigitallibrary.org
… In order to achieve different optical functions, we need to … splitter together with large operating
bandwidth, small size, and low loss. … by the effective refractive index of the waveguide. The …

VCSEL-based optical transceiver with a 90°-bent graded-index core polymer waveguide coupler for 25.78-Gb/s transmission

N Kohmu, M Ishii, R Hatai, T Ishigure - Optics Continuum, 2023 - opg.optica.org
… ) core polymer optical waveguide for compact high-speed optical … with different refractive
indices are inserted between the … coupling method for even lower loss and to support > 50 Gb/s. …

Femtosecond laser-inscribed optical waveguides in dielectric crystals: a concise review and recent advances

L Li, W Kong, F Chen - Advanced Photonics, 2022 - spiedigitallibrary.org
… By efficient modification of refractive indices of dielectric crystals, optical waveguides with …
-dependent properties are very different for the two crystalline waveguides. The LiNbO 3 only …