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| 1 | Polarization-independent multimode interference coupler with anisotropy-engineered bricked metamaterial显示文摘Many applications, including optical multiplexing, switching, and detection, call for low-cost and broadband photonic devices with polarization-independent operation. While the silicon-on-insulator platform is well positioned to fulfill most of these requirements, its strong birefringence hinders the development of polarizationagnostic devices. Here we leverage the recently proposed bricked metamaterial topology to design, for the first time, to our knowledge, a polarization-independent 2 × 2 multimode interference coupler using standard 220 nm silicon thickness. Our device can be fabricated with a single etch step and is optimized for the O-band,covering a wavelength range of 160 nm with excess loss, polarization-dependent loss, and imbalance below 1 dB and phase errors of less than 5°, as demonstrated with full three-dimensional finite-difference time-domain simulations. | Carlos Perez-Armenta Alejandro Ortega-Monux Jose Manuel Luque-Gonzalez Robert Halir Pedro J.Reyes-Iglesias Jens Schmid Pavel Cheben Inigo Molina-Fernandez J.Gonzalo Wanguemert-Perez | 2022 | Photonics Research2022，10，4： | 2 |
| 2 | Ultra-broadband nanophotonic phase shifter based on subwavelength metamaterial waveguides显示文摘Optical phase shifters are extensively used in integrated optics not only for telecom and datacom applications but also for sensors and quantum computing.While various active solutions have been demonstrated,progress in passive phase shifters is still lacking.Here we present a new type of ultra-broadband 90°phase shifter,which exploits the anisotropy and dispersion engineering in subwavelength metamaterial waveguides.Our Floquet–Bloch calculations predict a phase-shift error below 1.7°over an unprecedented operation range from 1.35 to 1.75μm,i.e.,400 nm bandwidth covering the E,S,C,L,and U telecommunication bands.The flat spectral response of our phase shifter is maintained even in the presence of fabrication errors up to 20 nm,showing greater robustness than conventional structures.Our device was experimentally demonstrated using standard220 nm thick SOI wafers,showing a fourfold reduction in the phase variation compared to conventional phase shifters within the 145 nm wavelength range of our measurement setup.The proposed subwavelength engineered phase shifter paves the way for novel photonic integrated circuits with an ultra-broadband performance. | DAVID GONZáLEZ-ANDRADE JOSéMANUEL LUQUE-GONZáLEZ J.GONZALO WANGüEMERT-PéREZ ALEJANDRO ORTEGA-MONUX PAVEL CHEBEN íNIGO MOLINA-FERNáNDEZ AITOR V.VELASCO | 2020 | Photonics Research2020，8，3： | 2 |
| 3 | Cellulase kinetics as a function of cellulose pretreatment显示文摘 | Bommarius A S Katona A Cheben S E | 2008 | Metabolic Engineering2008，10，： | 1 |
| 4 | Design of polarization-in- sensitive ring resonators in SOI using cladding stress engi- neering and MMI Couplers显示文摘 | Xu Dan-Xia Jang S Cheben P | 2006 | IEEE Photonics Technology Letters2006，18，2： | 1 |
| 5 | Cellulase kinetics as a function of cellulose pretreatment显示文摘 | Andreas S Bommarius Adrian Katona Sean E Cheben | 2008 | Metabolic Engineering2008，10，6： | 1 |
| 6 | 查看详情显示文摘 | Pavel Cheben Ian Powell Siegfried Janz Dan-Xia Xu | | 0，，14： | 1 |
| 7 | Cellulase kinetics as a function of cellulose pretreatment 显示文摘 | Bommarius A S Katona A Cheben S E | 2008 | Metabolic Engineering2008，10，6： | 1 |
| 8 | A novel wavelength dispersive device with a dispersive element based on staircase-like straight and parallel arrayed waveguides显示文摘 | MATOS O M CALVO M L CHEBEN P | 2007 | Opt Commun2007，270，1： | 1 |
| 9 | Cellulase ki- netics as a function of cellulose pretreatment 显示文摘 | Bommarius A S Katona A Cheben S E | 2008 | Metab Eng2008，10，6： | 1 |
| 10 | Preparation and Optical Characterization of Thick-Film Zirconia and Titania Ormosils显示文摘 | F. Del Monte P. Cheben C.P. Grover J.D. Mackenzie | 1999 | Journal of Sol - Gel Science and Technology1999，，1： | 1 |
| 11 | A Photorefractive Organically Modified Silica Glass with High Optical Gain显示文摘 | Cheben P Del Monte F Worsfold DJ | 2000 | Nature2000，408，： | 1 |
| 12 | 查看详情显示文摘 | Pavel Cheben Ian Powell Siegfried Janz Dan-Xia Xu | | 0，，14： | 1 |
| 13 | 显示文摘 | Monte F D Cheben P Grover C P | 1999 | Sol-Gel Sci Technol1999，15，： | 1 |
| 14 | Silicon waveguide modulator based on carrier depletion in periodically interleaved PN junctions显示文摘 | Li Z Y Xu D X McKinnon W R Janz S Schmid J H Cheben P Yu J Z | | 0，，18： | 1 |
| 15 | A photorefractive organically modified silica glass with high optical gain显示文摘 | Cheben P Del Monte F Worsfolds D J | 2000 | Nature2000，408，： | 1 |
| 16 | Cellulase kinetics as a function of cellulose pretreatment显示文摘 | BommariusAS KatonaA Cheben S E etal | 2008 | Metabolic Engineering2008，10，6： | 1 |
| 17 | Gradient-index antireflective subwavelength structures for planar waveguide facets 显示文摘 | SCHMID J H CHEBEN P JANZ S | 2007 | Opt Lett2007，32，13： | 1 |
| 18 | Next-generation siliconphotonics:introduction显示文摘In the past decade,silicon photonics has been making tremendous progress in terms of device functionality and performances as well as circuit integration for many practical applications ranging from communication,sensing,and information processing.This special issue,including four review articles and nine research articles,aims to provide a comprehensive overview of this exciting field.They offer a collective summary of recent progresses,in-depth discussions of the state-of-the-art,and insights into forthcoming developments that are well poised to drive silicon photonics technology into its next generation. | DAOXIN DAI DI LIANG PAVEL CHEBEN | 2022 | Photonics Research2022，10，10： | 0 |
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