Slotted Waveguide Antenna
Waveguide Slot Array Antenna Design
Waveguide-slot Array Antenna Designs For Low-average-sidelobe Specifications
Slot Waveguide Design Software

Waveguide Slot Array Slotted waveguide arrays consist of a number of slots cut into the walls of a waveguide forming an array with the slots acting as individual radiating elements. The resonant slot array employs near half-wavelength long resonant slots as individual radiators. The array elements are excited in the standing wave mode, which is.

Optics Letters
Vol. 41,
Issue 11,
pp. 2501-2504
(2016)
•https://doi.org/10.1364/OL.41.002501

Design method is limited only for waveguide antennas with longitudinal slots cut in a broad waveguide wall. The equivalent circuit of such an N-slotted waveguide anten-na, where each slot is represented by a normalized paral-lel admittance (y k = Y k /Y 0 = g+jb) inserted into a long transmission line with a characteristic admittance Y 0, is.
Waveguide with a thin slot centered about its width. In this case, the z-component of the current will not be disturbed, because the slot is thin and the z-current would not need to travel around the slot. Hence, the x-component of the current will be responsible for the radiation.
Slot-Waveguides In order to design, develop and improve slot-waveguides for applications in the ﬁeld of biopho-tonic or high-speed modulators it is necessary to cal.
This paper discusses the design, analysis, and development of waveguide-fed planar slot arrays to achieve low-average-sidelobe specifications, as may arise in radiometer applications. Such antennas may be required to meet strict average sidelobe levels in different angular regions, and low average return loss over a specified bandwidth.

Share

Get Citation
Copy Citation Text
Abhijeet Phatak, Zhenzhou Cheng, Changyuan Qin, and Keisuke Goda, 'Design of electro-optic modulators based on graphene-on-silicon slot waveguides,' Opt. Lett. 41, 2501-2504 (2016)
Export Citation

Abstract

We present a graphene-on-silicon (GoS) suspended vertical slot waveguide. By changing the Fermi level of graphene, the variation in the effective refractive index (RI) of the waveguide is a factor of two larger than that in the traditional GoS rib waveguide. The improvement is due to the light-intensity enhancement and the poor confinement of the optical mode in the slot nanostructure. We design Mach–Zehnder interferometer (MZI) and microring modulators based on the GoS suspended vertical slot waveguide. Our calculations show that the modulators can be energy-efficient and footprint-compact due to the large phase shift of the propagating mode in the waveguide after applying a gate voltage on the graphene. Fabrication of our design is easy and CMOS-compatible. It paves the way for chip-integrated electronic-RI modulators.

© 2016 Optical Society of America

Full Article | PDF ArticleOSA Recommended ArticlesDesign of graphene-on-germanium waveguide electro-optic modulators at the 2μm wavelength

Jiaqi Wang, Qiuxia Li, Dan Huang, Chongbin Liang, Yuzhi Chen, Lin Fang, Youfu Geng, Xueming Hong, and Xuejin Li
OSA Continuum 2(3) 749-758 (2019)

One-dimensional photonic crystal slot waveguide for silicon-organic hybrid electro-optic modulators

Hai Yan, Xiaochuan Xu, Chi-Jui Chung, Harish Subbaraman, Zeyu Pan, Swapnajit Chakravarty, and Ray T. Chen
Opt. Lett. 41(23) 5466-5469 (2016)

Nanoscale electro-optic modulators based on graphene-slot waveguides

Zhaolin Lu and Wangshi Zhao
J. Opt. Soc. Am. B 29(6) 1490-1496 (2012)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Slotted Waveguide Antenna

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Casino free spins bonuses are exactly what they sound like. You’ll get the chance to spin the reels in slots games a given number of times for free! Playing slots with free spins still gives you. Online casino games free spins. SlotsUp team offers you to explore the constantly growing list of slot machine games with free spins feature.

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Durant oklahoma casino open. Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Modes of Slot Waveguides

Simulation of silicon cross-slot waveguide with FIMMWAVE software

Waveguide Slot Array Antenna Design

FIMMWAVE's mode solvers were used to calculate the modes of a silicon cross-slot waveguide; slot waveguides use a combination of high-index and low-index layers to generate light confinement.

FIMMWAVE can be used to model any slot waveguide geometry built from any materials, including silicon, polymer and hybrid slot waveguides. The silicon cross-slot waveguide presented here is taken from an article from Helsinki University of Technology [1], featuring FIMMWAVE simulations. The paper also presents results for waveguide geometries with angled sidewalls.

See also [2], also featuring FIMMWAVE simulations for the modelling of slot waveguides.

Silicon slot waveguide designed in FIMMWAVE

The modes of the silicon slot waveguide were calculated using FIMMWAVE's fully vectorial FDM Solver. The calculation only took a few seconds, and the solver was able to take advantage of the waveguide symmetry.

This waveguide is a single-mode waveguide, and the fundamental TE-like mode and TM-like mode are shown below. You can see clearly how the cross-slot geometry generates a 90-degree rotation of the field distribution between the two polarisations. FIMMWAVE can also provide a large number of mode properties, including effective index, propagation constant, group index, dispersion, polarisation, effective mode area, confinement factor etc.

Properties of the fundamental TE-like mode of the silicon cross-slot waveguide:
(clockwise from top-left) intensity profile, Ex field profile and horizontal section, mode properties

Properties of the fundamental TM-like mode of the silicon cross-slot waveguide:
(clockwise from top-left) intensity profile, Ey field profile and horizontal section, mode properties

FIMMWAVE allows you to check the accuracy

Slot Waveguide Design