Faezeh Fesharak
University of Victoria | UVIC M. Sc., Ph. D.
https://www.researchgate.net/profile/Faezeh_Fesharaki
Publications
Publications (25)
Mode-Selective Transmission Line for Chip-to-Chip Terabit-per-Second Data Transmission
Article
- Jun 2018
Faezeh Fesharaki
Tarek Djerafi
Mohamed Chaker
Ke WuThe recently developed mode-selective transmission line (MSTL) is proposed and exploited as an alternative approach to accommodate the growing and future ultrafast interconnects requirements of ultralarge-scale integration for high density, speed, performance, and bandwidth (BW). A parametric study is performed to optimize the MSTL structure for hi...
Longitudinally Uniform Transmission Lines with Frequency-Enabled Mode Conversion
Article
- Apr 2018
A class of longitudinally uniform transmission lines with low loss, low dispersion, and high-field confinement, called mode-selective transmission lines (MSTLs), has been proposed for ultra-broadband and ultra-fast electromagnetic signal guidance and processing. Their operation is mainly based on the concept of frequency-enabled mode selectivity. T...
Physical evidence of mode conversion along mode-selective transmission line
Conference Paper
- Jun 2017
Plasmonic Anti-reflection Coating for Photoconductive Terahertz Generation
Article
- May 2017
Plasmon-enhanced photoconductive antennas allow for improved performance, particularly in below-bandgap absorption devices using low-temperature grown GaAs. Here we design the plasmonic nanostructures to act as anti-reflection coatings as well, achieving below 10% reflection at 1570 nm wavelength in an optimized device. Quantitative agreement is se...
Guided-Wave Properties of Mode-Selective Transmission Line
Article
- Apr 2017
The so-called mode-selective transmission line or simply "MSTL" is studied theoretically and experimentally. This low-loss and low-dispersion transmission line operates with a frequency-dependent mode-switching behavior. This self-adaptive mode-selective guided-wave structure begins with the propagation of electromagnetic waves over the lower frequ...
Article
- Jan 2017
In this paper, a unified method is introduced and formulated for deriving the equivalent circuit model of a guided wave structure as well as its characteristic impedance for any mode. This method is developed through the combination of a generalized multimode calibration and a full-wave simulation, and it is applicable to the fundamental mode as we...
Article
- Dec 2016
Sebastien VigneIn this work, optical properties of epitaxial CaxBa1-xNb2O6, CBN (x = 0.28) thin film based waveguides are studied at 1550 nm optical communications wavelength. CBN thin films are deposited epitaxially on MgO substrates using Pulsed Laser Deposition and characterized by prism coupling to extract the refractive index and propagation loss. It is show...
Accurate theoretical and experimental characterization of optical grating coupler
Article
- Sep 2016
Periodic structures, acting as reflectors, filters, and couplers, are a fundamental building block section in many optical devices. In this paper, a three-dimensional simulation of a grating coupler, a well-known periodic structure, is conducted. Guided waves and leakage characteristics of an out-of-plane grating coupler are studied in detail, and...
Low-Loss and Low-Dispersion Transmission Line Over DC-to-THz Spectrum
Article
- Jun 2016
Transmission lines or waveguides are the most fundamental building blocks of all electronic and photonic circuits and systems. Efforts have been made to incrementally evolve and improve existing transmission line structures to meet the increasingly stringent demands for signal transmission bandwidth and performance. However, a potentially revolutio...
Mode-Selective Transmission Line for DC-to-THz Super-Broadband Operation
Conference Paper
- May 2016
A class of transformative transmission lines and waveguides called mode-selective transmission line (MSTL), is devised and demonstrated in this work. MSTL, in a fully integrated form, exhibits a disparate modal characteristic of traditional planar microwave transmission lines and non-planar waveguides. Whereas at low frequency, MSTL operates under...
High-Integrity Terabit-per-Second Signal Interconnects with Mode-Selective Transmission Line
Conference Paper
- May 2016
An alternative global interconnects solution with minimal signal distortion and propagation loss is explored and reported in this work. This interconnect scheme is made possible thanks to the use of a mode-selective transmission line (MSTL), which supports a fundamental TEM mode in lower frequency range covering DC while it is automatically reconfi...
Low-Loss and Low-Dispersion Transmission Line over DC-to-THz Spectrum
Conference Paper
Full-text available
- Feb 2016
We report on a fully integrated transmission line with simple structure that overcomes the long-standing bottleneck problems of high attenuation, strong dispersion, and low mode confinement in the guided-wave signal transmission from DC to terahertz. Mode-selective transmission line supports super-broadband and/or ultra-fast pulse signal propagatio...
Low-Loss and Low-Dispersion Transmission Line over DC-to-THz Spectrum
Research
Full-text available
- Nov 2015
Transaction on Terahertz Science and Technology, accepted for publication. Transmission lines or waveguides are the most fundamental building blocks of all electronic and photonic circuits and systems. Efforts have been made to incrementally evolve and improve existing transmission line structures to meet the increasingly stringent demands for sign...
Theoretical Analysis and Experimental Evaluation of SiO2-CBN-MgO Rib Waveguide Structure
Article
Full-text available
- Sep 2014
This letter reports the design, simulation, optimization, and optical characterization of an electro-optical SiO2-calcium barium niobate (CBN)-MgO rib waveguide structure. To achieve the single mode and low loss operation, the proposed rib waveguide structure is simulated and optimized with respect to CBN thin film thickness, etching depth, and rib...
Full-wave Analysis of Optical Grating Coupler
Conference Paper
- May 2014
Growth and optimization of CBN thin films by various deposition techniques
Conference Paper
- May 2014
Conference Paper
- Jan 2014
The design, simulation, optimization and experimental demonstration of an electrooptic SiO2-CBN-MgO rib waveguide structure are reported in this paper. The proposed structure is modeled and optimized by simulations. CBN thin film is deposited epitaxially by a pulsed laser deposition technique. The CBN rib waveguide structure is patterned using plas...
Broadband substrate integrated waveguide edge-guided mode isolator
Article
Full-text available
- Feb 2013
Cevdet AkyelAn edge-guided mode isolator based on substrate integrated waveguide (SIW) technology is presented. A matching transition section from a ferrite isolator in a SIW to a microstrip is introduced and developed. Supporting experiments have been conducted to confirm the predicted performance of the new structure.
Article
Full-text available
- Jan 2013
The substrate integrated waveguide (SIW) is exploited for the broadband determination of the complex dielectric permittivity of lossy material. The effective measurement frequency covers the passband of the fundamental mode in the SIW. This method is an operative technique for characterising the material in millimetre-waves.
Article
Full-text available
- Dec 2012
High-frequency electro-optical modulator is critical for enabling signal processing and distribution in the next generation cloud-computing, tele-medicine, and telecommunications. In this paper, substrate integrated waveguide (SIW) is exploited as an alternative fundamental transmission line structure in support of electrical signal for the design...
Band-pass non-TEM mode traveling-wave electro-optic polymer modulator
Conference Paper
- Oct 2012
High-frequency electro-optic modulator is critical for enabling signal processing and distribution in the next generation cloud-computing, tele-medicine, and telecommunications. In this paper, substrate integrated waveguide (SIW) is exploited as fundamental transmission line structure for the design and development of millimeter-wave (mmW) and tera...
Band-pass non-TEM mode traveling-wave electro-optic polymer modulator
Conference Paper
Full-text available
- Jan 2012
High-frequency electro-optic modulator is critical for enabling signal processing and distribution in the next generation cloud-computing, tele-medicine, and telecommunications. In this paper, substrate integrated waveguide (SIW) is exploited as fundamental transmission line structure for the design and development of millimeter-wave (mmW) and tera...
Conference Paper
Full-text available
- May 2009
Hamid Mirmohammad SadeghiScattering parameters are the most widely used tools for characterization of the linear microwave circuits. Although they can be physically measured after the implementation of the microwave circuits, accurate calculation of these parameters plays a crucial role in the design process. By using a time domain technique such as finite difference time...
A new high-power, dual-band, E-plane, ferrite circulator
Conference Paper
Full-text available
- May 2009
Hadi Razavipour
Gholamreza AskariThe design, simulation and enhancing performance of a new structure for X-band high-power, low-loss, low-bias, triangular-ferrite waveguide circulator is presented. Dual circulation property is obtained by triangular shape of ferrite post. The effects of circulator's structure parameters, such as ferrite parameters and magnetic DC bias, on isolatio...
A New Dual-Band High Power Ferrite Circulator
Article
Full-text available
- Jan 2009
The design, simulation and performance enhancement of a new structure for X-band high-power, low-loss, low-bias, triangular-ferrite waveguide circulator are presented. Dual circulation property is obtained by triangular shape of ferrite post. The effects of circulator's structure parameters, such as ferrite parameters and magnetic DC bias, on isola...
