We analyze the propagation of surface plasmons in metallic multimode waveguides that consist of alternating stripes of different metals in the transverse direction and that are homogeneous in the longitudinal direction. The purpose of structuring the waveguide in the transverse direction is to take advantage of the different attenuation and propagation constants for different metals. Here, in particular, alternating stripes of Ag and Au are considered. This allows one to influence the modal spectrum. We consider two different, well-defined waveguide configurations. For these, the propagating plasmonic modes are calculated. Based on the numerical simulations, we discuss the attenuation and propagation behavior and show the resulting eigenmodes for different values of the structural parameters, i.e., widths and thicknesses.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/AO.49.004262 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Spatiotemporal imaging of nonlinear optics in van der Waals waveguides.
Nat Nanotechnol
January 2025
Department of Chemistry, Columbia University, New York, NY, USA.
Van der Waals (vdW) semiconductors have emerged as promising platforms for efficient nonlinear optical conversion, including harmonic and entangled photon generation. Although major efforts are devoted to integrating vdW materials in nanoscale waveguides for miniaturization, the realization of efficient, phase-matched conversion in these platforms remains challenging. Here, to address this challenge, we report a far-field ultrafast imaging method to track the propagation of both fundamental and harmonic waves within vdW waveguides with femtosecond and sub-50 nanometre spatiotemporal precision.
View Article and Find Full Text PDFDesign of a Half-Mode Substrate-Integrated Waveguide (HMSIW) Multimode Resonator Bandpass Filter Using the Minkowski Fractal for C-Band Applications.
Micromachines (Basel)
November 2024
Department of ECE, Jaypee Institute of Informaton Technology, Noida 201309, UP, India.
A substrate-integrated waveguide (SIW) bandpass filter (BPF) with extraordinary selectivity and an adequate upper stopband for C-band Satellite Communication (SATCOM) applications is proposed in this paper. The design comprises comb-shaped slots engraved on a half-mode SIW (HMSIW) that constitute a multimode resonator (MMR). Its performance is further ameliorated by applying the first and second iterations of the Minkowski fractal curve in the ground plane as a defected ground structure (DGS).
View Article and Find Full Text PDFSilica Waveguide Thermo-Optic Mode Switch with Bimodal S-Bend.
Nanomaterials (Basel)
December 2024
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, No. 2699 Qianjin Street, Changchun 130012, China.
A silica waveguide thermo-optic mode switch with small radius bimodal S-bends is demonstrated in this study. The cascaded multimode interference coupler is adopted to implement the E and E mode selective output. The beam propagation method is used in design optimization.
View Article and Find Full Text PDFThe cross talk and power consumption of the 2 × 2 optical switch is a key metric in the design of large-scale photonic integrated circuits (PICs). We build a theoretical model of a 2 × 2 Mach-Zehnder interferometer (MZI) optical switch, taking into account both imbalances in the arm loss and the coupler splitting ratio. The splitting ratio imbalance requirement for a given switch cross talk is summarized, which provides a guideline for the switch design.
View Article and Find Full Text PDFMeter-Scale Long Connectorized Paper-like Polymer Waveguide Film for 100 Gbps Board-Level Optical Interconnects Application.
Polymers (Basel)
November 2024
State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China.
We design and fabricate meter-scale long connectorized paper-like flexible multimode polymer waveguide film with a large bandwidth-length product (BLP) for board-level optical interconnects application. The measured BLP of the multimode waveguide is greater than 57.3 GHz·m at a wavelength of 850 nm under the strictest overfilled launch condition with a maximum length of 2.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!