Plasmonic isolator for photonic integrated circuits

Shimizu, Hiromasa; Zayets, V.

doi:10.1557/mrs.2018.123

Cited by 17 publications

(11 citation statements)

References 27 publications

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“…The interaction between light and matter with SPP has been applied to optical refractive index sensors with propagating/localized surface plasmon resonance (SPR) [ 6 ], localized surface plasmon with enhanced Raman scattering (SERS) [ 7 ], magnetic modulation of SPP and optical isolator application [ 8 ], and light-induced local heating with metal nanoparticles [ 9 , 10 ]. Light-induced local heating has been applied for thermophoretic manipulation of DNA with Au nanoparticles [ 11 ], resonant light-triggered DNA release from plasmonic nanoparticles [ 12 ], and selective light-induced contents release from liposomes [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

221 K Local Photothermal Heating in a Si Plasmonic Waveguide Loaded with a Co Thin Film

Ota

Miyauchi

Shimizu

2021

Sensors

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Photothermal heaters are important devices for optical switches and memories based on the thermo-optic/magneto-optic effect and phase change materials. We demonstrated photothermal heating in Si plasmonic waveguides loaded with Co thin films by measuring the resistance change upon inputting transverse-magnetic (TM) mode light. Temperature rise is proportional to the light intensity with clear polarization dependence. The photothermal conversion efficiency was estimated at 36 K/mW and maximum temperature rise was estimated at 221 K at steady state upon the inputting 6.3 mW TM mode light for the 400 nm-wide, 8 µm-long and 189 nm-thick Co film deposited on the Si wire waveguide with 129 nm-thick SiO2 buffer layer. The method to increase the efficiency is discussed based on the experimental and simulation results considering the thickness of the SiO2 buffer layer, Co layer and Si core layer, waveguide width, and wavelength. Local photothermal heaters in this study can be applied to a variety of fields including optical switches/memories without electrical control signals in photonic integrated circuits, on-chip optical sensors, and a lab-on-a-chip in biology, chemistry, and medicine.

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Section: Introductionmentioning

confidence: 99%

221 K Local Photothermal Heating in a Si Plasmonic Waveguide Loaded with a Co Thin Film

Ota

Miyauchi

Shimizu

2021

Sensors

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“…Indeed, yttrium garnet oxides, which are the most efficient MO materials, are very challenging to process and pattern on photonic platforms because of their lattice mismatch with photonic substrates and the high-temperature annealing required to be MO active . Even though great progress has been made on the monolithic integration of such materials, other strategies employ surface bonding onto silicon and III/V laser substrates, , or novel MO materials. ,, Thus, concerning the enhancement of the MO effects with surface devices, few experimental demonstrations that exist were largely obtained with a metallic grating placed on top of a garnet film. Belotelov and co-workers have used such devices to prove the enhancement of the Faraday effect and TMOKE .…”

Section: Introductionmentioning

confidence: 99%

“…26 Even though great progress has been made on the monolithic integration of such materials, 27 other strategies employ surface bonding onto silicon and III/V laser substrates, 26,28 or novel MO materials. 15,29,30 Thus, concerning the enhancement of the MO effects with surface devices, few experimental demonstrations that exist were largely obtained with a metallic grating placed on top of a garnet film. Belotelov and co-workers have used such devices to prove the enhancement of the Faraday effect 10 and TMOKE.…”

Section: ■ Introductionmentioning

confidence: 99%

Enhancement of Both Faraday and Kerr Effects with an All-Dielectric Grating Based on a Magneto-Optical Nanocomposite Material

et al. 2020

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We report on the design, fabrication, and characterization of an all-dielectric one-dimensional (1D) resonant device formed by a silicon nitride grating impregnated by a low-index magneto-optical silica-type matrix. This impregnation is realized through the dipping of the 966 nm periodic template in a sol−gel solution previously doped with CoFe 2 O 4 nanoparticles, and able to fill the grating slits. By a proper adjustment of the geometrical parameters of such a photonic crystal membrane, simultaneous excitation of transverse electric (TE) and transverse magnetic (TM) polarization resonances is nearly achieved at 1570 nm. This TE/TM phase-matching situation leads to a fivefold enhancement of the Faraday effect in the resonance area with an increased merit factor of 0.32°. Moreover, the device demonstrates its ability to enhance longitudinal and transverse Kerr effects for the other directions of the applied magnetic field. Taking benefits from the ability of the nanocomposite material to be processed on photonic platforms, and despite its quite low magneto-optical activity compared to classical magnetic materials, this work proves that an alldielectric 1D device can produce a high magneto-optical sensitivity to every magnetic field directions.

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“…Shimuzu and Zayets provide a review of their study that used magnetic metal thin films for integrated optical isolator applications. 43 A 100% enhancement of the ferromagnetic metal FOM and 20× reduction of propagation loss in the optimized ferromagnetic plasmonic structure is observed. By incorporating these magnetic plasmonic waveguides on the sidewall of an InGaAsP/InP optical amplifier, they demonstrate an isolation ratio of 14.7 dB/mm due to the nonreciprocal optical loss in the forward and backward propagation directions.…”

Section: Nonreciprocal Photonics: Challenges and Opportunitiesmentioning

confidence: 89%