TITLE

A novel cylindrical TE2,1 mode converter

AUTHOR(S)
Constable, D. A.; Fampris, X. S.; Ronald, K.; He, W.; Whyte, C. G.; Robertson, C. W.
PUB. DATE
September 2010
SOURCE
Review of Scientific Instruments;Sep2010, Vol. 81 Issue 9, p094702
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A novel, compact arrangement for Ka-band mode couplers, which convert a rectangular waveguide TE1,0 to cylindrical waveguide TE2,1 mode, has been designed, constructed, and tested. The design features a set of longitudinal slots, positioned in regions of negligible current flow for the TE2,1 mode, allowing its propagation to be preferentially favored, by suppression of the fundamental TE1,1 mode. Numerical simulations and experimental measurements display good agreement, showing transmission of the intended TE2,1 mode at levels of better than -5 dB, from a frequency of ∼37.5 to 41 GHz. Subsequent farfield measurements confirm the presence of the TE2,1 mode, demonstrating good agreement when compared with analytical expectations. Such a device would be an ideal candidate for an application where mode purity, bandwidth, and ease of construction are of primary importance and where the transmission efficiency is of limited concern.
ACCESSION #
54049793

 

Related Articles

  • 20 dB-enhanced coupling to slot photonic crystal waveguide using multimode interference coupler. Chen, Xiaonan; Jiang, Wei; Chen, Jiaqi; Gu, Lanlan; Chen, Ray T. // Applied Physics Letters;8/27/2007, Vol. 91 Issue 9, p091111 

    The authors experimentally demonstrate a slot photonic crystal structure for guiding light in a sub-100-nm-wide low-index region. A multimode interference-based coupling structure is introduced to couple light into such a narrow slot photonic crystal waveguide. A coupler of 1.26 μm long...

  • Parameters Contribute to the Propagation Profile Change. Ab-Rahman, Mohammad Syuhaimi // Advances in Natural & Applied Sciences;Oct-Dec2011, Vol. 5 Issue 4, p372 

    Propagation profile is the main reference and useful in designing optical devices such as demultiplexer, WDM coupler and Directional Coupler. The exact point to split wavelength can be determined sharply by defining the coupling length. In this paper we proposed a few methods that can be used to...

  • ANALYSIS AND DESIGN OF A ONE-TWELFTH WAVELENGTH THREE-SECTION DIRECTIONAL COUPLER. Singh, K.; Vinayakarohit, V.; Ramasubramanian, R.; Pal, S. // Microwave Journal;Mar2007, Vol. 50 Issue 3, p120 

    This article describes the design and development of a three-section 10 dB backward wave directional coupler at Ku-band. The approach demonstrates a two-third reduction in the line length of each section, compared to the traditional approach. The simulated and measured results of both...

  • Optical data transmission.  // Machine Design;9/13/2007, Vol. 79 Issue 17, p79 

    The article deals with optical data transmission (ODT). It offers a means of sending data between moving objects without some of the drawbacks associated with radio-frequency and wired-communications methods and it essentially replaces the radio waves or electrical wires with a beam of light....

  • Measuring manufacturing capability for couplers and wavelength division multiplexers. Chien-Wei Wu; Pearn, W. L. // International Journal of Advanced Manufacturing Technology;Mar2005, Vol. 25 Issue 5/6, p533 

    The couplers and wavelength division multiplexers have been widely used in high-speed, high-volume image data transmission systems to provide sufficient bandwidth and smaller channel spacing for greater throughput. In this paper, we develop a method for measuring the manufacturing capability of...

  • Compact and broadband directional coupling and demultiplexing in dielectric-loaded surface plasmon polariton waveguides based on the multimode interference effect. Zhu, Zhihong; Garcia-Ortiz, Cesar E.; Han, Zhanghua; Radko, Ilya P.; Bozhevolnyi, Sergey I. // Applied Physics Letters;8/5/2013, Vol. 103 Issue 6, p061108 

    We theoretically, numerically, and experimentally demonstrate that a directional coupling function can be realized with a wide bandwidth (greater than 200 nm) in dielectric-loaded surface plasmon polariton waveguides based on the multimode interference effect. The functional size of the...

  • Broadband and Small-size 3-dB Ring Coupler. Simion, Stefan; Bartolucci, Giancarlo // Progress in Electromagnetics Research Letters;2014, Vol. 44, p23 

    A topology for a 3-dB broadband and small-size ring coupler is proposed. It consists of fully-distributed Composite Right-/Left-Handed phase shifters and a Lange coupler. For the fabricated coupler, the frequency bandwidth is one octave, centered on 1.5GHz, while the footprint area is reduced to...

  • DESIGN OF A WIDE BAND EIGHT-WAY COMPACT SIW POWER COMBINER FED BY A LOW LOSS GCPW-TO-SIW TRANSITION. Kazemi, R.; Sadeghzadeh, R. A.; Fathy, A. E. // Progress in Electromagnetics Research C;Mar2012, Vol. 26, p97 

    Ultra wideband components have been developed using SIW technology. The various newly developed components include a GCPW transition, Y and T-junctions. The GCPW transition covers over 10 GHz bandwidth with less than 0.4 dB insertion loss. The optimized T and Y-junctions have relatively wide...

  • Metal-semiconductor-metal Ge photodetectors integrated in silicon waveguides. Vivien, Laurent; Marris-Morini, Delphine; Fédéli, Jean-Marc; Rouvière, Mathieu; Damlencourt, Jean-François; El Melhaoui, Loubna; Le Roux, Xavier; Crozat, Paul; Mangeney, Juliette; Cassan, Eric; Laval, Suzanne // Applied Physics Letters;4/14/2008, Vol. 92 Issue 15, p151114 

    Metal-semiconductor-metal (MSM) Ge photodetectors integrated in silicon-on-insulator waveguides using butt coupling configuration have been experimentally demonstrated. Bandwidths reach 28 GHz under 6 V bias at wavelengths of 1.31 and 1.55 μm for a photodetector with 1 μm electrode...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics