Direct measurement of propagation losses in silver nanowires

Ma, Yaoguang; Li, Xiyuan; Yu, Hua; Tong, Limin; Gu, Ying; Gong, Qihuang

doi:10.1364/ol.35.001160

Cited by 116 publications

(93 citation statements)

References 22 publications

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“…This means that they can only propagate over certain distances. The plasmon damping length in silver nanowires is measured experimentally by exciting the plasmons at different positions on the wire by using a tapered optical fi ber and record the emission intensity at the wire end [33,48,49] . The emission intensity at different excitation positions, i.e., propagating distances, can be fi tted by an exponential decay function.…”

Section: Group Velocity and Propagation Lengthmentioning

confidence: 99%

Nanowire-based plasmonic waveguides and devices for integrated nanophotonic circuits

Wei

2012

Nanophotonics

118

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The fast development of plasmonics have greatly advanced our understanding to the abundant phenomena related to surface plamon polaritons (SPPs) and improved our ability to manipulate light at the nanometer scale. With tightly confi ned local fi eld, SPPs can be transmitted in waveguides of subwavelength dimensions. Nanophotonic circuits built with plasmonic elements can be scaled down to dimensions compatible with semiconductor-based nanoelectronic circuits, which provides a potential solution for the next-generation information technology. Different structures have been explored as plasmonic waveguides for potential integration applications. This review is focused on metallic nanowire waveguides and functional components in nanowire networks. We reviewed recent progress in research about plasmon generation, emission direction and polarization, group velocity, loss and propagation length, and the near-fi eld distribution revealed by quantum dot fl uorescence imaging. Electrical generation and detection of SPPs moves towards the building of plasmonic circuits, where bulky external light sources and detectors may be omitted. The coupling between metal nanowires and emitters is important for tailoring light-matter interactions, and for various potential applications. In multi-nanowire structures, plasmon signal control and processing are introduced. The working principles of these nanowire-based devices, which are based on the control to the near fi eld distributions, will become the design rule for nanophotonic circuits with higher complexity for optical signal processing. The recent developments in hybrid photonic-plasmonic waveguides and devices are promising for making devices with unprecedented performance.

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Section: Group Velocity and Propagation Lengthmentioning

confidence: 99%

Nanowire-based plasmonic waveguides and devices for integrated nanophotonic circuits

Wei

2012

Nanophotonics

118

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“…However, given the high attenuation introduced by metals, the estimation of Lp is usually carried out by indirectly measuring the scattering [17,18,[24][25][26][27][28][29][30][31][32] or by decoupling the SPP through additional optical components such as prisms [16], diffraction gratings [15,22], or more complicated systems as near-field scanning optical microscopes [19,20,33].…”

Section: Introductionmentioning

confidence: 99%

Propagation length enhancement of surface plasmon polaritons in gold nano-/micro-waveguides by the interference with photonic modes in the surrounding active dielectrics

et al. 2017

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Abstract:In this work, the unique optical properties of surface plasmon polaritons (SPPs), i.e. subwavelength confinement or strong electric field concentration, are exploited to demonstrate the propagation of light signal at 600 nm along distances in the range from 17 to 150 μm for Au nanostripes 500 nm down to 100 nm wide (30 nm of height), respectively, both theoretically and experimentally. A low power laser is coupled into an optical fiber tip that is used to locally excite the photoluminescence of colloidal quantum dots (QDs) dispersed in their surroundings. Emitted light from these QDs is generating the SPPs that propagate along the metal waveguides. Then, the above-referred propagation lengths were directly extracted from this novel experimental technique by studying the intensity of light decoupled at the output edge of the waveguide. Furthermore, an enhancement of the propagation length up to 0.4 mm is measured for the 500-nm-wide metal nanostripe, for which this effect is maximum. For this purpose, a simultaneous excitation of the same QDs dispersed in poly(methyl methacrylate) waveguides integrated with the metal nanostructures is performed by end-fire coupling an excitation laser energy as low as 1 KW/cm 2 . The proposed mechanism to explain such enhancement is a non-linear interference effect between dielectric and plasmonic (super)modes propagating in the metal-dielectric structure, which can be apparently seen as an effective amplification or compensation effect of the gain material (QDs) over the SPPs, as previously reported in literature. The proposed system and the method to create propagating SPPs in metal waveguides can be of interest for the application field of sensors and optical communications at visible wavelengths, among other applications, using plasmonic interconnects to reduce the dimensions of photonic chips.

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“…(2) Strong evanescent field Strong evanescent field offers strong near-field interaction between the MNF and its surroundings, making the MNF highly favorable for optical sensing [21][22][23][24][25][26][27][28][29][30][31][32] and evanescent coupling between the MNF and other waveguides (e.g., a semiconductor [33,34], metal [35,36] nanowire or planar waveguide [37]) or a substrate [30,35,38,39]. Based on the high-efficiency evanescent coupling, a variety of optical components or devices (e.g., loop and knots resonators [40][41][42][43][44][45][46][47][48][49][50][51], lasers [52][53][54][55][56][57][58], and sensors [21][22][23][24][25][26][27]…”

Section: Introductionmentioning

confidence: 99%

Optical microfibers and nanofibers

Tong

2013

Nanophotonics

Self Cite

124

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As a combination of fiber optics and nanotechnology, optical microfibers and nanofibers (MNFs) have been emerging as a novel platform for exploring fiber-optic technology on the micro/nanoscale. Typically, MNFs taper drawn from glass optical fibers or bulk glasses show excellent surface smoothness, high homogeneity in diameter and integrity, which bestows these tiny optical fibers with low waveguiding losses and outstanding mechanical properties. Benefitting from their wavelengthor sub-wavelength-scale transverse dimensions, wave-

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Direct measurement of propagation losses in silver nanowires

Cited by 116 publications

References 22 publications

Nanowire-based plasmonic waveguides and devices for integrated nanophotonic circuits

Nanowire-based plasmonic waveguides and devices for integrated nanophotonic circuits

Propagation length enhancement of surface plasmon polaritons in gold nano-/micro-waveguides by the interference with photonic modes in the surrounding active dielectrics

Optical microfibers and nanofibers

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