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4. Conclusions
Author details
Mihai Oane1, Ion N. Mihăilescu2and Carmen-Georgeta Ristoscu2*
1 Electrons Accelerators Laboratory, National Institute for Lasers, Plasma and Radiation Physics, Măgurele-Ilfov, Romania
2 Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, Măgurele-Ilfov, Romania
*Address all correspondence to: carmen.ristoscu@inflpr.ro
© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/
by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
10
Nonlinear Optics - From Solitons to Similaritons
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Optical Sensor for Nonlinear and Quantum Optical Effects
Antônio Carlos Amaro de Faria
Abstract
In this chapter, the main foundations for the conception, design, and the project of optical sensors that explore the effects of nonlinear and quantum optics are presented. These sensors have a variety of applications from the design of wave- guides with self-selection of propagation modes to signal processing and quantum computing. The chapter seeks to present formal aspects of applied modern optics in a detailed, sequential, and concise manner.
Keywords:optical sensor, nonlinear optics, quantum optics, optical fiber, optical signal processing
1. Introduction
Classical electrodynamics is the basis for the analysis and formulation of electro- magnetic waves. From the equations of Maxwell, it is possible to obtain the equation of the movement of the electric and magnetic fields whose solution describes the propagation of the electromagnetic wave. This formal treatment was originally developed by Maxwell [1], who verified that the electromagnetic wave propagated with the speed of light provided that the optics could be described from the electro- magnetism. The medium through which the electromagnetic wave propagates
responds in various ways to the electromagnetic field. This response depends on how the atoms and molecules are arranged spatially composing the constituent medium and how the interaction or scattering of the electromagnetic wave through the
medium will occur. In other words, the way the medium responds to the electromag- netic excitation is contained in the middle polarization due to the propagation of the electromagnetic wave. It is in this context that some recent analyses have discovered some solutions from the nonlinear response of the medium to the propagation of the electromagnetic wave which may lead to an approach of some quantum effects from a nonlinear treatment of electromagnetism in the material medium.
The propagation of optical pulses through waveguides such as optical fibers can give rise to nonlinear optical effects and quantum effects. The appropriate modeling of these effects can be used for the development of sensors to the optical fiber whose resolution can be regulated properly. In addition, the method allows the selection of propagation modes by selecting the desired modes by knowing the band gap of the waveguide or the photonic crystal.
The development of sensors to the optical fiber is based on the propagation of optical pulses through waveguides like optical fibers and photonic crystals. The propagation of the pulses through waveguides can generate nonlinear and quantum
effects as Raman and Brillouin effects. We have analytically modeled these effects from the Maxwell equations on dielectric media describing the propagation of these optical pulses by developing a model that can be implemented computationally for the processing and propagation of these optical signals. The optical sensor can select the modes of propagation of the optical beams through the natural conduc- tion band of the photonic crystal since the function of our model, the so-called optical potential, describes the optical light scattering through the crystal [2].