Effects of fabrication deviations and fiber misalignments on a fork-shape edge coupler based on subwavelength gratings
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.126562
Abstract: Abstract We demonstrate a fork-shape edge coupler consisting of a two-tip taper and subwavelength gratings for optical interconnects in optical communication scenarios. The proposed fiber-to-chip edge coupler can achieve a low coupling loss of around… read more here.
Keywords: fiber misalignments; subwavelength gratings; coupler; edge coupler ... See more keywords
Multiple p-n junction subwavelength gratings for transmission-mode electro-optic modulators
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/srep46508
Abstract: We propose a free-space electro-optic transmission modulator based on multiple p-n-junction semiconductor subwavelength gratings. The proposed device operates with a high-Q guided-mode resonance undergoing electro-optic resonance shift due to direct electrical control. Using rigorous electrical… read more here.
Keywords: subwavelength gratings; multiple junction; transmission; electro optic ... See more keywords
A Compact and Broadband 2×2 3-dB Adiabatic Coupler Based on Trapezoidal Subwavelength Gratings
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2023.3275709
Abstract: We propose a compact, broadband 2×2 3-dB adiabatic coupler using trapezoidal subwavelength gratings on silicon-on-insulator platform. The proposed device is constructed by two tapered waveguides, which are composed of trapezoidal subwavelength gratings. Broadband 3-dB optical… read more here.
Keywords: subwavelength gratings; broadband adiabatic; trapezoidal subwavelength; adiabatic coupler ... See more keywords
Focusing reflectors based on two-dimensional subwavelength gratings
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.58.11.117101
Abstract: Abstract. Two planar dielectric reflectors with polarization-independent focusing ability have been designed. They are designed and compared on the base of the square lattice of circular two-dimensional (2-D) subwavelength gratings (SWGs) and the hexagonal lattice… read more here.
Keywords: dimensional subwavelength; subwavelength gratings; focusing reflectors; reflectors based ... See more keywords
Birefringence measurements of diamond space-variant subwavelength gratings.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.004909
Abstract: Subwavelength gratings are gratings with periods smaller than the incident wavelength. They possess form birefringence, which depends on the grating parameters. This paper presents the results of an experimental method designed to measure the birefringent… read more here.
Keywords: subwavelength gratings; measurements diamond; subwavelength; birefringence measurements ... See more keywords
Optical spatial differentiation with suspended subwavelength gratings.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.416801
Abstract: We investigate first- and second-order spatial differentiation of an optical beam transverse profile using guided-mode resonances in thin, suspended subwavelength gratings. Highly reflective one-dimensional gratings are patterned on freestanding 200 nm-thick silicon nitride membranes using… read more here.
Keywords: differentiation; spatial differentiation; subwavelength gratings; beam ... See more keywords
Efficient mode converters and filters using asymmetrical directional couplers with subwavelength gratings.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.466344
Abstract: Mode-division multiplexing (MDM) is a promising solution to improve data transmission capacity for future optical interconnect networks. Mode converters and mode filters play a key role in on-chip MDM systems. Here, we propose and experimentally… read more here.
Keywords: subwavelength gratings; couplers subwavelength; mode converters; asymmetrical directional ... See more keywords
On-Chip Design of a Broadband 850 nm TM-Pass/TE-Stop Polarizer with Tilted Subwavelength Gratings
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14112359
Abstract: An integrated TM-pass/TE-stop polarizer centered at 850 nm is designed in this paper. The proposed polarizer is designed on a Si3N4 on insulator platform with tilted subwavelength gratings (SWG). Since the tilted SWGs have much… read more here.
Keywords: tilted subwavelength; subwavelength gratings; pass stop; stop polarizer ... See more keywords
Research on photodiode integrated with wide spectrum focusing reflector using nonperiodic subwavelength gratings
Sign Up to like & getrecommendations! Published in 2018 at "Chinese Optics Letters"
DOI: 10.3788/col201816.051301
Abstract: The fabrication and characterization of p-i-n photodiodes integrated with wide spectrum focusing reflectors using nonperiodic strip and concentric-circular subwavelength gratings are presented. The experimental results show that the gratings can reflect and focus the incident… read more here.
Keywords: subwavelength gratings; using nonperiodic; wide spectrum; integrated wide ... See more keywords