Use of photonic crystal cavities for temporal differentiation of optical signals

Abstract

We show that general-form optical cavities are able to perform the temporal differentiation of optical signals. Analytical relationships to account for the scattering losses for such a cavity's characteristics are deduced on the basis of temporal coupled-mode theory. A compact nanocavity-aided differentiator based on a ridge photonic crystal waveguide is designed.

Contribution of Samara Scientists Into Computer Optics Journal Development

“…It was shown that such gratings have a high efficiency and can significantly reduce the size of the projection devices used in mobile phones, etc. Modern computational and technological capabilities allow colleagues and students of I. N. Sissakian to transfer from the tasks of diffractive optics to the problems of diffractive nanophotonics [122][123][124][125][126][127][128][129][130][131].…”

“…These results open up the prospects of solving one of the main tasks of computer optics -implementation of optical calculations [124][125][126][127] and lay the intellectual foundations of advanced information technologies [131]. Finally, we mention two practical applications of computer optics elements: protective holograms [132][133] and optical filters for professional and amateur photography [134] …”

Asymptotic research in computer optics

“…We use this methods not only for the study of diffractive optical elements (in particular, of short-focus DOEs), but also for the study of nanophotonics components [66][67][68][69][70][71][72][73][74], for the design of equipment for hyperspectral remote sensing [75][76][77][78][79] and solving other urgent tasks of diffractive nanophotonics [80]. …”

Contribution Samara scientists in the development of the journal "Computer Optics"

“…Even The scope of research topics covered by the journal has been extended during 10 years of its publication, now embracing new areas such as plasmonics and diffractive nanophotonics [31][32][33][34][35][36][37][38][39][40][41][42][43], geo-information technologies [44][45][46][47], systems of technical vision [48][49][50][51][52], interpretation and understanding of nanoscale objects images [53][54][55][56], intellectual analysis of video streams [57][58], optical computations [59][60][61], analysis of hyperspectral data [62][63][64], development of hyperspectrometers for Earth remote sensing [65][66][67][68], new types of laser beams with unique properties [69][70][71], sharp focusing [72][73][74], new types of lighting devices [75][76]. Furthe...…”