Broadband coupled-line directional couplers with high impedance transformation ratio
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Microwave and Wireless Technologies"
DOI: 10.1017/s1759078717000113
Abstract: A new class of 3-dB impedance transforming directional couplers has been proposed in which the recently published coupled-line couplers, consisting of coupled-line sections having different electrical lengths, have been utilized. The main advantage of the… read more here.
Keywords: directional couplers; coupled line; impedance transformation; impedance ... See more keywords
Broadband Equal-Split Directional Couplers Composed of Cascade- and Tandem-Connected Coupled-Line Sections Having Unequal Lengths
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3106901
Abstract: A new concept of broadband equal-split coupled-line directional couplers is proposed. The proposed couplers are based on coupled-line sections, all having the same coupling coefficient, and feature frequency characteristics similar to the ones obtained for… read more here.
Keywords: broadband equal; line sections; line; directional couplers ... See more keywords
Mode Multiplexer With Cascaded Vertical Asymmetric Waveguide Directional Couplers
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2829143
Abstract: We report a mode (de)multiplexer based on the structure of cascaded vertical waveguide directional couplers, where the spatial modes of a few-mode core are coupled to various single-mode cores placed above the few-mode core. Using… read more here.
Keywords: sub sub; directional couplers; sub; cascaded vertical ... See more keywords
Robust Integrated Optical Unitary Converter Using Multiport Directional Couplers
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2019.2943116
Abstract: An integrated optical unitary converter (OUC), which can realize arbitrary N × N unitary transformation on chip, is promising for widespread applications in various areas, such as optical communication, quantum information processing, and optical neural… read more here.
Keywords: unitary converter; integrated optical; directional couplers; multiport directional ... See more keywords
Machine Learning for Automating Millimeter-Wave Directional Coupler Designs
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2021.3094221
Abstract: A computational approach to automate mm-wave Directional Couplers can greatly improve upon the current techniques that rely on trial-and-error. To build such an automated framework, we propose a Machine Learning technique that, within a computational… read more here.
Keywords: machine learning; learning automating; automating millimeter; directional couplers ... See more keywords
Design of reversible optical Feynman gate using directional couplers
Sign Up to like & getrecommendations! Published in 2020 at "Optical Engineering"
DOI: 10.1117/1.oe.59.2.027104
Abstract: Abstract. Currently, reversible logic has gained a lot of interest, and it is a reliable solution in optical computing, low-power CMOS, quantum computing, and nanotechnology. Being reversible logic, one-to-one mapping between input and output causes… read more here.
Keywords: optical feynman; directional couplers; feynman gate; design reversible ... See more keywords
Design of an on-chip Fourier transform spectrometer using waveguide directional couplers and NEMS.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.030362
Abstract: A novel concept of on-chip Fourier transform spectrometer is proposed. It consists of semiconductor waveguide directional couplers and NEMS actuators. The optical path difference can be tuned by controlling the NEMS actuators to couple or… read more here.
Keywords: transform spectrometer; directional couplers; chip fourier; waveguide directional ... See more keywords
Multicast silicon photonic MEMS switches with gap-adjustable directional couplers.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.017561
Abstract: We report on 4x20 silicon photonic MEMS switch that is capable of multicasting. The switch is built on passive optical crossbar network with gap-adjustable directional couplers. The switch has high on-off extinction ratio (59 dB),… read more here.
Keywords: photonic mems; adjustable directional; silicon photonic; gap adjustable ... See more keywords
Silicon erasable waveguides and directional couplers by germanium ion implantation for configurable photonic circuits.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.394871
Abstract: A novel technique for realization of configurable/one-time programmable (OTP) silicon photonic circuits is presented. Once the proposed photonic circuit is programmed, its signal routing is retained without the need for additional power consumption. This technology… read more here.
Keywords: erasable waveguides; waveguides directional; directional couplers; ion ... See more keywords
Efficient mode (de)multiplexer with two cascaded horizontal polymer waveguide directional couplers.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.462881
Abstract: In this paper, we present an efficient polymer two-mode (de)multiplexer with two cascaded horizontal waveguide asymmetric directional couplers (ADCs). Through extensive simulations, the optimized waveguide core dimensions were determined, and the distance L from the… read more here.
Keywords: multiplexer two; polymer; two cascaded; cascaded horizontal ... See more keywords
Ultra-compact polarization-independent directional couplers utilizing a subwavelength structure.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.005202
Abstract: Ultra-compact polarization-independent directional couplers are proposed and demonstrated on the silicon-on-insulator (SOI) platform. By using the subwavelength structure in the coupling region, the coupling strength is greatly enhanced only for TE polarization, so that the… read more here.
Keywords: ultra compact; polarization independent; polarization; directional couplers ... See more keywords