Ultrafast optical switching based on mutually enhanced resonance modes in gold nanowire gratings

Wang, Yan

doi:10.1039/c9nr05648c

Cited by 9 publications

(5 citation statements)

References 34 publications

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“…Using the same definition, we may calculate the efficiency of the excellent ultrafast POS device reported in refs. [23,40] , which are about 79 and 53 mOD cm 2 mJ −1 , respectively. Therefore, the fiber-delivered device even shows higher efficiency in ultrafast optical modulation than those fabricated on planar substrates.…”

Section: Ultrafast Pos Signals Detected At the Output End Of The Fibermentioning

confidence: 95%

Optical Fiber Delivered Ultrafast Plasmonic Optical Switch

Yang

2021

Advanced Science

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Ultrafast optical switch based on plasmonic nanostructures has large application potentials in optical logic circuits and optical communication systems. Integration of plasmonic optical switching devices with optical fibers is a breakthrough for realizing practical applications in long-range optical data transmission or communication techniques. Here, the incorporation of plasmonic optical switch devices onto the end facets of optical fibers is reported, so that the switched optical signals are generated by interaction between femtosecond laser pulses and plasmonic nanostructures on one end of the fiber, and are delivered via the fiber waveguide to the other end for detection or decoding. "Quenching" of localized surface plasmon in the gold nanowires by its interaction with band-edge modulation in gold through strong optical excitation is the responsible photophysics. This work accomplishes for the first time the implementation of ultrafast plasmonic optical switch device on optical fiber tips for logic data transmission.

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Section: Ultrafast Pos Signals Detected At the Output End Of The Fibermentioning

confidence: 95%

Optical Fiber Delivered Ultrafast Plasmonic Optical Switch

Yang

2021

Advanced Science

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“…Metallic photonic lattices are promising in their application to filters [ 1 , 2 ], all-optical switches [ 3 , 4 ], energy harvesting [ 5 , 6 , 7 ], biosensor devices [ 8 , 9 , 10 , 11 , 12 , 13 ], and meta-materials [ 14 , 15 ]. However, their widespread application is restricted by their expense and low productivity of fabrication strategies, such as electron-beam lithography, focused ion-beam lithography, and direct laser writing [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Direct Imprinting of Large-Area Metallic Photonic Lattices for Infrared Polarization Filters with Broadband Tunability

2023

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Metallic photonic lattices are promising in their application to plasmonic optical devices; however, scalable fabrication strategies are limited by sample size, response wavelength (mostly in the visible range), cost, and duration. This paper proposes a direct imprinting strategy to fabricate large-area metallic photonic lattices, which present a strong plasmonic response and broadband angle-resolved tuning properties in the infrared region. This simple fabrication strategy combines solution-synthesized Au nanoparticle colloid and imprinting technology, which does not require the use of photoresist or lithography. Thus, the feature size and response wavelength can exceed the limitations of the beam size and wave band, thereby offering the advantages of a low cost and high throughput.

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“…Further applications of LSPs may involve optical logic circuits [17,18] and optical switching devices, which are particularly important for optical communication or optical computation techniques. Ultrafast plasmonic optical switching devices have been reported in a large variety of designs [19][20][21], which are based on the ultrafast modulation of electronic dynamics. In principle, the dephasing of the plasmonic electron oscillation takes less than 100 fs.…”

Section: Introductionmentioning

confidence: 99%

Femtosecond Autocorrelation of Localized Surface Plasmons

2023

Nanomaterials

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Plasmon electronic dephasing lifetime is one of the most important characteristics of localized surface plasmons, which is crucial both for understanding the related photophysics and for their applications in photonic and optoelectronic devices. This lifetime is generally shorter than 100 fs and measured using the femtosecond pump–probe technique, which requires femtosecond laser amplifiers delivering pulses with a duration even as short as 10 fs. This implies a large-scale laser system with complicated pulse compression schemes, introducing high-cost and technological challenges. Meanwhile, the strong optical pulse from an amplifier induces more thermal-related effects, disturbing the precise resolution of the pure electronic dephasing lifetime. In this work, we use a simple autocorrelator design and integrate it with the sample of plasmonic nanostructures, where a femtosecond laser oscillator supplies the incident pulses for autocorrelation measurements. Thus, the measured autocorrelation trace carries the optical modulation on the incident pulses. The dephasing lifetime can be thus determined by a comparison between the theoretical fittings to the autocorrelation traces with and without the plasmonic modulation. The measured timescale for the autocorrelation modulation is an indirect determination of the plasmonic dephasing lifetime. This supplies a simple, rapid, and low-cost method for quantitative characterization of the ultrafast optical response of localized surface plasmons.

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Ultrafast optical switching based on mutually enhanced resonance modes in gold nanowire gratings

Abstract: An optical switch as fast as 290 fs using thick gold nanowires to achieve a modulation depth of >16%.

Cited by 9 publications

References 34 publications

Optical Fiber Delivered Ultrafast Plasmonic Optical Switch

Optical Fiber Delivered Ultrafast Plasmonic Optical Switch

Direct Imprinting of Large-Area Metallic Photonic Lattices for Infrared Polarization Filters with Broadband Tunability

Femtosecond Autocorrelation of Localized Surface Plasmons

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