Design of channel directional couplers fabricated on a buffer planar waveguide

2003 ◽  
Author(s):  
Jose R. Salgueiro ◽  
Maria C. Nistal ◽  
Vicente Moreno ◽  
Jesus Linares
Keyword(s):  
Planar Waveguide ◽  
Directional Couplers

scholarly journals Design of planar waveguide directional couplers with arbitrary modal electric field

2021 ◽  
Author(s):  
Anthony Boucouvalas ◽  
Kostas Angelis ◽  
Konstantinos Aidinis ◽  
Min Zhan ◽  
Danshi Wang
Keyword(s):  
Electric Field ◽  
Planar Waveguide ◽  
Directional Couplers

scholarly journals Design of Polarization-Independent Coarse Wavelength Splitters Based on Ridge-Waveguide Directional Couplers

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Chee-Wei Lee
Keyword(s):  
Planar Waveguide ◽  
Filter Design ◽  
Optical Network ◽  
Ridge Waveguide ◽  
Passive Optical Network ◽  
Polarization Splitter ◽  
Directional Couplers ◽  
Waveguide Devices ◽  
Wavelength Filter ◽  
Polarization Independent

We present the first unique design of a polarization-independent dual-wavelength splitter for wavelengths around 1.3 μm and 1.55 μm that is potentially of great interest to passive optical network (PON) applications. The filter design is simple compared with the other architectures and is based on ridge-type lateral directional couplers that can be readily integrated with other planar waveguide devices. Two design examples, based on InP/InGaAsP and Si/SiGe waveguides, are given. This polarization-independent wavelength splitting is achieved by exploiting the polarization dependence of the waveguides to produce coupling lengths that are sensitive to polarization and wavelength. We show that, to split the wavelengths without splitting the polarizations, the coupling lengths must be sufficiently different for TE and TM and for the different wavelengths in order to give the correct required ratios between the TE and TM coupling lengths for the two wavelengths of interest. We also show that the same approach can be applied to the design of a polarization splitter. The crosstalk, optical bandwidth, and fabrication sensitivity for the wavelength filter are evaluated.

191. Planar Waveguide Interferometers for Vapor Phase Sensing

1999 ◽  
Author(s):  
C. Joseph ◽  
D. Campbell ◽  
J. Suggs ◽  
J. Moore ◽  
N. Hartman
Keyword(s):  
Vapor Phase ◽  
Planar Waveguide

scholarly journals A Review on Improved Design Techniques for High Performance Planar Waveguide Slot Arrays

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1311
Author(s):  
Giovanni Andrea Casula ◽  
Giuseppe Mazzarella ◽  
Giorgio Montisci ◽  
Giacomo Muntoni
Keyword(s):  
Planar Waveguide ◽  
High Performance ◽  
Order Effects ◽  
Waveguide Slot ◽  
Waveguide Bends ◽  
Radar Systems ◽  
Slot Arrays ◽  
Planar Array ◽  
Improved Design ◽  
Design Techniques

Planar waveguide slot arrays (WSAs) have been used since 1940 and are currently used as performing antennas for high frequencies, especially in applications such as communication and RADAR systems. We present in this work a review of the most typical waveguide slot array configurations proposed in the literature, describing their main limitations and drawbacks along with possible effective countermeasures. Our attention has been focused mainly on the improved available design techniques to obtain high performance WSAs. In particular, the addressed topics have been reported in the following. Partially filled WSAs, or WSAs covered with single or multilayer dielectric slabs, are discussed. The most prominent second-order effects in the planar array feeding network are introduced and accurately modeled. The attention is focused on the T-junction feeding the array, on the effect of interaction between each slot coupler of the feeding network and the radiating slots nearest to this coupler, and on the waveguide bends. All these effects can critically increase the first sidelobes if compared to the ideal case, causing a sensible worsening in the performance of the array.

Modeling of racetrack-resonator add-drop filters with arbitrary nonlinear directional couplers

2012 ◽  
Vol 37 (11) ◽  
pp. 2097 ◽  
Author(s):  
Rafael Gómez-Alcalá ◽  
F. Javier Fraile-Peláez ◽  
Pedro Chamorro-Posada ◽  
Francisco J. Díaz-Otero
Keyword(s):  
Directional Couplers ◽  
Racetrack Resonator
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