T-Matrix Analysis of Electromagnetic Wave Diffraction From a Dielectric Coated Fourier Grating

Ohki, Makoto; Sato, Ken-ichi; Matsumoto, Mitsuji; Kozaki, Shogo

doi:10.2528/pier04083101

Cited by 11 publications

(5 citation statements)

References 5 publications

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“…where a is the coefficient of an incident plane wave, b is the coefficient of the reflected wave, D Q ± is the Dirichlet solution, N Q ± is the Neumann solution and 0 0 , S S α β are the 0 S surface field coefficients [9]. Similarly coefficients of transmitted wave are expressed using surface wave coefficients of 2 3 3 2 3 2 4 2 3 2 3 3 2 3 2 4 , ,…”

Section: S X Andmentioning

confidence: 99%

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Evanescent field scanning optical microscopy

Sukharenko

Dorsinville

2014

SPIE Proceedings

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The authors propose an alternative method for high resolution optical microscopy -Evanescent Field Scanning Optical Microscopy (EFSOM) which eliminates implementation of the scanning tip compare to classical NSOM technique. The approach involves scanning a sample in the evanescent-field of a prism generated using total internal reflection (TIR) and recording the reflected power as a function of position. The reflection pattern of the wave is collected and processed, using comparative differentiation. The extracted information is processed further to eliminate any distortions. The system is not limited by diffraction and resolution primarily depends on the characteristics of the photo-detector and scanning velocity. Implementation of thin silver layer and coupling of incident radiation into Surface Plasmons Polaritons (SPP) improves system sensitivity and reduces photo detector dynamic range requirements.

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Section: S X Andmentioning

confidence: 99%

“…We will first develop a theoretical model of the proposed EFSOM model using the T-matrix approximation [8,9,10,11]. …”

Section: Introductionmentioning

confidence: 99%

Evanescent field scanning optical microscopy

Sukharenko

Dorsinville

2014

SPIE Proceedings

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“…11. Airy-plasmon WDM demultiplexer [12]: Schematic diagram (top) and artistic view of spatial distribution of different wavelength (bottom with false colors).…”

Section: Wdm Demultiplexersmentioning

confidence: 99%

Plasmonic-Based Devices for Optical Communications

MYNBAEV¹,

SUKHARENKO²

2013

Selected Topics in Electronics and Systems

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To meet the demand of delivering ever-increasing Internet traffic, optical network must response by increasing its transmission capacity. Since transmission capacity of an individual fiber is still well exceed the capacity of transmitters (TXs) and receivers (RXs), wavelength-division multiplexing (WDM), in which many TXs and RXs at the transmitting ends of a fiber are used to send and receive many signals, becomes the necessary technology for increasing the transmission capacity of each link of an optical network. This trend, however, demands for increasing density not only the TXs and RXs, but all other components at the sending and receiving ends of communications links. As the number of wavelengths in WDM configuration getting greater, the number of all these components that must be placed on one board has to increase too; hence, the density of packaging comes to micro-and even nano-scale. The TXs and RXs are produced in arrays on a chip quite similar to production of VLSI electronic circuits. At that scale, traditional optical operations used today in an optical-communications technology, such as launching light into optical fiber from TXs and directing light from optical fiber into RXs, multiplexing and demultiplexing individual channels (wavelengths), and electro-optical (E/O) and opto-electrical (O/E) conversions become problems primarily because of the diffraction limit. The problems associated with the diffraction limit are particularly acute for optical interconnects. One of the possible solutions to all these-and some other-problems could be the use of plasmonics. In the last years, the optical-communications industry shows a great interest in developing this topic, as the growing number of publications and practical results can attest.This paper consists of two parts. The first part reviews the current trends in application of plasmonics in optical communications and the second part discusses the theoretical foundation of the proposed WDM demultiplexer and offers the scheme of possible implementation of the device.Plasmonics [1] is a branch of science and technology dealing with coupling of photons to free electron oscillations at the interface between a conductor and a dielectric. Though the concept of plasmons was introduced more than a century ago (G. Mie, 1908), only today practical realization of the plasmonics becomes feasible thanks to new nanofabrication technology and powerful simulation tools.Plasmonics' main entity is surface plasmon polaritons (SPPs), which are twodimensional electromagnetic waves that propagate between conductors (metals) and dielectrics. These surface waves are excited when light strikes the dielectric-metal interface; the energy of the photons is transferred to the metal and resonantly excites the oscillations of free electrons. The electrons' response results in the creation of dynamic Frontiers in Electronics Downloaded from www.worldscientific.com by MONASH UNIVERSITY on 04/22/17. For personal use only.

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“…Also, there are some other published papers which were discussed about different aspects of Bragg Gratings [18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

A New Method for Classification and Identification of Complex Fiber Bragg Grating Using the Genetic Algorithm

Rostami¹,

Yazdanpanah-Goharriz²

2007

PIER

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Abstract-In this paper a novel intelligent method to identify an unknown medium (type of apodization and chirping) is developed. Our consideration is concentrated on complex fiber Bragg Gratings. For realization of the idea the Genetic Algorithms (GAs) is used. So, GAs is used to solve inverse scattering problem for reconstruction of nonuniform or complex fiber Brag gratings. In this method, the reflection coefficient measured in practice is inserted to a suitable algorithm.According to the proposed method, first medium discrimination is performed between predefined large classes of mediums and then the whole and necessary parameters for reconstruction of the medium are extracted. Full numerical method is used for compare of the results obtained from the presented algorithm. Our simulation shows good agreement between them. So, a novel method for identification and discrimination of optical mediums especially complex Bragg Gratings is presented. Finally the presented method can be used to identify optical mediums and complex Bragg Gratings systems.

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T-Matrix Analysis of Electromagnetic Wave Diffraction From a Dielectric Coated Fourier Grating

Cited by 11 publications

References 5 publications

Evanescent field scanning optical microscopy

Evanescent field scanning optical microscopy

Plasmonic-Based Devices for Optical Communications

A New Method for Classification and Identification of Complex Fiber Bragg Grating Using the Genetic Algorithm

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