Characteristics of New Hybrid Plasmonic Bragg Reflectors Based on Sinusoidal and Triangular Gratings

Daneshmandi, Omidreza; Alighanbari, Abbas; Gharavi, Alireza

doi:10.1007/s11468-014-9800-6

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…The hybrid plasmonic structures have attractive properties in optics such as a better trade-off between mode size and propagation length in comparison to typical plasmonic structures. Moreover, a higher confinement of light and its energy density are achieved in the hybrid plasmonic structure compared with those in typical plasmonic configurations [4,27]. In the proposed structure (figure 2(a)) the metal contacts and extended metal pads are made of gold (Au) as the noble metal.…”

Section: The Proposed Photodetectormentioning

confidence: 99%

“…Surface plasmon (SP) waves which are evanescent fields, propagating at the metal-dielectric interface, are used for such transmission [2,3]. Nowadays, SPs are extensively used to enhance properties of optical devices such as: Bragg reflectors [4,5], nano antennas [6], solar cells [7,8], optical switches [9,10], photodetectors [11,12], and lasers [13,14].…”

Section: Introductionmentioning

confidence: 99%

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A new high performance MSM hybrid plasmonic photodetector based on nanogratings and dual mode horn shape waveguide

2018

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A new metal-semiconductor-metal photodetector (MSM-PD) based on a hybrid plasmonic and extra ordinary transmission (EOT) phenomenon is proposed. In the designed structure, we demonstrate that light transmission is improved by means of a new shape of surface nanograting and by optimizing the physical parameters of the metal. In this work the optical transfer parameters are strongly interrelated and all the parameters are optimized and the light transmission is enhanced by 55 times compared to the reference structure. Furthermore, the output port of the subwavelength slit in the presented MSM-PD has a dual horn shape and improves absorption light in the active layer of the structure. Also, by filling this port with the same type of material as that of the active layer, the absorption becomes greater than before. Moreover, the confinement region of the light in the active layer is reduced by using the hybrid plasmonic effect and therefore, the probability of the photon absorption is 101 times greater than that of the reference structure. Thus, the transmission and absorption enhancement improves the quantum efficiency and the electrical response of the presented MSM-PD. A high performance new photodetector is identified as an ultra-fast MSM-PD and because of its thin film active layer can be used as a low-noise one.

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Section: The Proposed Photodetectormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new high performance MSM hybrid plasmonic photodetector based on nanogratings and dual mode horn shape waveguide

2018

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“…Considering plasmonics as one of the potential replacements of electronics, different types of plasmonic devices are proposed and investigated both numerically and experimentally. These devices include filters [4], [5], couplers [6], [7], splitters [8]- [10], sensors [11]- [13], Bragg reflectors [14]- [16], Mach-Zehnder interferometers [17]- [19], etc. Among the plasmonic devices, plasmonic sensor is one of the most suitable devices to be integrated optical circuits considering size, performance and application requirements.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Plasmonic Refractive Index Sensor Using Doped Silicon: an Alternative to MIM Structures

2021

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Metal-Insulator-Metal (MIM) structures possess a number of shortcomings which include optical loss, tenability, nanofabrication challenges, chemical instability, incompatible manufacturing process etc. To overcome these shortcomings, plasmonic properties of heavily n-doped silicon are studied and found to be similar to those of conventional plasmonic metals like gold or silver. A plasmonic refractive index sensor using n-doped silicon instead of metal is designed and analyzed numerically using Finite Element Method (FEM). A maximum sensitivity of 4900 nm/RIU, which is higher than most of the MIM plasmonic refractive index (RI) sensors proposed to date, is obtained here. The RI sensor reported here, provides a significant improvement in the sensitivity of the device along with its compatibility with traditional nanoelectronics.

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“…Thus, plasmonic devices are making their way towards realizing low cost, high sensitivity, and small size, leading to many biological, environmental, and chemical applications [6][7][8][9]. Recent plasmonic applications include a number of different plasmonic devices like plasmonic filters [10][11][12], plasmonic splitters [13][14][15], Mach-Zehnder interferometers [16,17], plasmonic Bragg reflectors [18][19][20], plasmonic sensors [10,11,[13][14][15][16][17][18], etc. Most of the plasmonic devices reported to date are based on a metalinsulator-metal (MIM) waveguide structure.…”

Section: Introductionmentioning

confidence: 99%

CMOS Compatible Plasmonic Refractive Index Sensor based on Heavily Doped Silicon Waveguide

Faruque

Mahmud

Sagor

2020

Eng. Technol. Appl. Sci. Res.

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In this study, a plasmonic refractive index (RI) sensor using heavily n-doped silicon waveguide is designed and numerically simulated using finite element method (FEM). The reported sensor is based on gratings inside a heavily doped silicon waveguide structure instead of a conventional metal-insulator-metal structure. This feature enables the device to overcome the limitations of conventional plasmonic devices like optical losses, polarization management, etc. Besides, it makes the device compatible with Complementary Metal Oxide Semiconductor (CMOS) technology and thus provides an easier way of practical fabrication and incorporation in integrated circuits. The presented sensor has a highest sensitivity of 1208.9nm/RIU and a resolution as small as 0.005 which is comparable with conventional plasmonic sensors reported to date. The main advantage of this plasmonic sensor is that it has a very simple structure and uses silicon instead of metal which provides an easier way of fabrication.

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Characteristics of New Hybrid Plasmonic Bragg Reflectors Based on Sinusoidal and Triangular Gratings

Cited by 6 publications

References 20 publications

A new high performance MSM hybrid plasmonic photodetector based on nanogratings and dual mode horn shape waveguide

A new high performance MSM hybrid plasmonic photodetector based on nanogratings and dual mode horn shape waveguide

Highly Sensitive Plasmonic Refractive Index Sensor Using Doped Silicon: an Alternative to MIM Structures

CMOS Compatible Plasmonic Refractive Index Sensor based on Heavily Doped Silicon Waveguide

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