<p> Breast cancer is one of the most common cancers in women with a very high incident rate, especially for those women who are between 40-60 years old. Most drugs are large or non-polar macromolecules, which cannot get into cancer cells autonomously, so a method that can deliver those drugs is very important. Optoporation method has been facilitated with gold nanoparticles, which are bound to breast cancer cells, and then absorb the optical energy to improve the membrane permeabilization. Long-term dietary consumption of fruits and vegetables high in &beta;-carotene and other phytochemicals has been shown beneficial in terms of anti-cancer, anti-aging, preventing cardiovascular disease and cataract. However they are large non-polar molecules that are difficult to enter the cancer cells. Here in this study, we applied optoporation method by using &beta;-carotene, and tetracycline as anti-cancer drugs in various concentrations to optimize highest selective cell death/best potential for T47D breast cancer cell lines.</p>

Since information has been regarded as a physical entity, the field of quantum information theory has blossomed. This brings novel applications, such as quantum computation. This field has attracted the attention of numerous researchers with backgrounds ranging from computer science, mathematics and engineering, to the physical sciences. Thus, we now have an interdisciplinary field where great efforts are being made in order to build devices that should allow for the processing of information at a quantum level, and also in the understanding of the complex structure of some physical processes at a more basic level. This thesis is devoted to the theoretical study of structures at the nanometer-scale, "nanostructures," through physical processes that mainly involve the solid-state and quantum optics, in order to propose reliable schemes for the processing of quantum information. Initially, the main results of quantum information theory and quantum computation are briefly reviewed. Next, the state-of-the-art of quantum dots technology is described. In so doing, the theoretical background and the practicalities required for this thesis are introduced. A discussion of the current quantum hardware used for quantum information processing is given. In particular, the solid-state proposals to date are emphasised. A detailed prescription is given, using an optically-driven coupled quantum dot system, to reliably prepare and manipulate exciton maximally entangled Bell and Greenberger-Horne-Zeilinger (GHZ) states. Manipulation of the strength and duration of selective light-pulses needed for producing these highly entangled states provides us with crucial elements for the processing of solid-state based quantum information. The all-optical generation of states of the so-called Bell basis for a system of two quantum dots (QDs) is exploited for performing the quantum teleportation of the excitonic state of a dot in an array of three coupled QDs. Theoretical predictions suggest that several hundred single quantum bit rotations and controlled-NOT gates could be performed before decoherence of the excitonic states takes place. In addition, the exciton coherent dynamics of a coupled QD system confined within a semiconductor single mode microcavity is reported. It is shown that this system enables the control of exciton entanglement by varying the coupling strength between the optically-driven dot system and the microcavity. The exciton entanglement shows collapses and revivals for suitable amplitudes of the incident radiation field and dot-cavity coupling strengths. The results given here could offer a new approach for the control of decoherence mechanisms arising from entangled "artificial molecules." In addition to these ultrafast coherent optical control proposals, an approach for reliable implementation of quantum logic gates and long decoherence times in a QD system based on nuclear magnetic resonance (NMR) is given, where the nuclear resonance is controlled by the ground state "magic number" transitions of few-electron QDs in an external magnetic field. The dynamical evolution of quantum registers of arbitrary length in the presence of environmentally-induced decoherence effects is studied in detail. The cases of quantum bits (qubits) coupling individually to different environments ("independent decoherence"), and qubits interacting collectively with the same reservoir ("collective decoherence") are analysed in order to find explicit decoherence functions for any number of qubits. The decay of the coherences of the register is shown to strongly depend on the input states: this sensitivity is a characteristic of both types of coupling (collective and independent) and not only of the collective coupling, as has been reported previously. A non-trivial behaviour - "recoherence" - is found in the decay of the off-diagonal elements of the reduced density matrix in the specific situation of independent decoherence. The results lead to the identification of decoherence-free states in the collective decoherence limit. These states belong to subspaces of the system's Hilbert space that do not become entangled with the environment, making them ideal elements for the engineering of "noiseless" quantum codes. The relations between decoherence of the quantum register and computational complexity based on the new dynamical results obtained for the register density matrix are also discussed. This thesis concludes by summarising and pointing out future directions, and in particular, by discussing some biological resonant energy transfer processes that may be useful for the processing of information at a quantum level.

A new high resolution Fourier transform interferometer has been constructed for the study of infrared molecular spectra. The instrument is capable of producing high quality spectra with an unapodized resolution of.004 cm$\sp{-1}$ for the wavenumber range 2000 to 10000 cm$\sp{-1}$. Described here are the details of construction and operating procedures for this instrument as well as the data collection, control and analysis software written specifically for it. / The new FTS instrument has been used to measure the torsion-rotation absorption spectrum of the O-H stretch vibration in gaseous hydrogen peroxide. Over 3000 line assignments have been made, including many arising from torsional "hot band" transitions. Many new assignments have been made for the weak n = 0$\to$1 bands and assignments for the very weak n = 1$\to$2 bands are reported for the first time. These new data have been used to determine the torsion-rotation energy levels and inertial constants for each of the five lowest torsion states of the excited antisymmetric O-H stretch. The shape of the potential curve was estimated from these using a semi-rigid rotor model; the limitations of the model are examined. / Source: Dissertation Abstracts International, Volume: 53-07, Section: B, page: 3554. / Major Professor: Robert H. Hunt. / Thesis (Ph.D.)--The Florida State University, 1992.

Este trabalho original descreve o desenvolvimento e construção de um medidor comprimento de onda de precisão para feixes de laser. O primeiro estágio do dispositivo baseia-se na atividade óptica de um cristal de quartzo natural e fornece uma precisão de uma parte em 104. O segundo estágio, o qual não foi concluído, envolve o uso de um Vernier Fabry-Pérot, montado com espaçadores de zerodur, que pode aumentar a precisão da medida para algumas partes em 107. / This original work reports on the development and construction of a precision laser beams wavemeter. The first part of the instrument is based on the optical activity of a natural quartz crystal and provides an accuracy of one part in 104. The second part, that was not concluded, employs a Fabry-Pérot Vernier, assembled with zerodur spacers, which increases the accuracy to a few parts in 107

在適當的條件下，正向入射激光束令GaAs量子阱微腔產生方向的不穩定性，並生成橫向光學圖案。方向不穩定性的形成是由於極化子，即光子及量子阱激子的強非線性耦合的本徵態，在微腔內散射的結果。電腦模擬顯示，通過一個非常弱的控制激光束，橫向光學圖案可以從一個方向切換到另一個。它可以作為一個全光學開關，而全光開關可有效地改善計算機的性能。 / 本論文先介紹GaAs量子阱微腔的理論及其數值模擬，以顯示GaAs量子阱微腔能夠產生光學圖案和全光學開關。然而，透過複雜的模擬數據去理解其規律及原理實在太困難。為此，我們發展一個低維的群種競爭模型，以理解這些現象。 / 為了分析群種競爭模型，我們應用了一些數學工具，如Gröbner bases 和廣義判式，以減少計算模型的相圖所需的電腦負荷。此外，我們也利用了突變理論來分類和解釋所有相圖中的相界。這個人口競爭模型使我們對不同物理系統中的圖案生成現象有一個全面的定性理解。 / 在本論文的最後一部分，我們研究量子阱雙微腔，即兩個耦合的微腔，而每個微腔中間也有一個量子阱。透過傳輸矩陣的方法，我們獲得了雙微腔的色散關係，並與實驗結果作比較。我們預期沿著這個研究方向在未來能夠加快實現全光開關。 / Under favorable conditions, laser beams incident normally to a GaAs quantumwell microcavity develop directional instabilities and generate transverse patterns in the far field. The directional instabilities are driven by scattering among polaritons inside the microcavity, where the polaritons are the eigenstates of strong linear coupling between the cavity photons and the excitons inside the quantum-well. It has been predicted that the transverse pattern can be switched from one to another by the use of a very weak control beam. It can serve as an all-optical switching, which can potentially be used to improve computers’ performance. / In this thesis, the theory of the GaAs quantum-well microcavity is first introduced and numerical results showing the formation of patterns and the all-optical switching scheme are presented. However, understanding the patterns and their dynamics through numerical simulations turns out to be very complicated. To this end, we derive a low-dimensional population-competition model for the interpretation of these behaviors. / To facilitate the analysis the population-competition model, we apply mathematical tools such as the Gröbner basis and the generalized discriminant to reduce the computational load in finding the ‘phase diagrams’ of the populationcompetition model. Besides, we also make use of the catastrophe theory to classify and explain all the phase boundaries in the phase diagrams. This population-competition model enables us to acquire an overall qualitative picture of pattern formation in various physical systems. / In the last part of this thesis, we use the transfer-matrix method to study the polariton spectrum of a quantum-well double-microcavity, which is two coupled optical cavities each containing a quantum well, and compare the spectrum with the experimental results. We expect our efforts along this direction could expedite realization of all-optical switching in the future. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Tse, Yuen Chi = 分析橫向光學圖案的低維群種競爭模型 / 謝沅志. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2013. / Includes bibliographical references (leaves 112-119). / Abstracts also in Chinese. / Tse, Yuen Chi = Fen xi heng xiang guang xue tu an de di wei qun zhong jing zheng mo xing / Xie Yuanzhi. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Optical computation and all-optical switching --- p.3 / Chapter 1.2 --- Nonlinear optics and low-intensity ultra-fast all-optical switching of transverse optical pattern --- p.4 / Chapter 1.3 --- Pattern formation and amplitude equation formalism --- p.6 / Chapter 1.4 --- Semiconductor quantum-well double-microcavity and transfermatrix method --- p.9 / Chapter 2 --- Semiconductor quantum-well microcavity --- p.10 / Chapter 2.1 --- Physical configuration and theroy --- p.10 / Chapter 2.2 --- Simplified models --- p.19 / Chapter 2.3 --- Directional instability and the effect of anisotropy in model PCO-Q --- p.25 / Chapter 2.4 --- Effect of control beam and all-optical switching in PCO-Q --- p.30 / Chapter 2.5 --- Simulation results of model PCO-L, a model without quadratic dependence --- p.33 / Chapter 3 --- Population-competition model --- p.37 / Chapter 3.1 --- Derivation of PC model --- p.37 / Chapter 3.1.1 --- Approximation from the simulation results --- p.38 / Chapter 3.1.2 --- Adiabatic approximation for the field equations --- p.39 / Chapter 3.1.3 --- Revised dynamical equations --- p.40 / Chapter 3.1.4 --- Taylor expansion approximation about phase locking --- p.42 / Chapter 3.1.5 --- Comparison with the simulation results --- p.45 / Chapter 3.1.6 --- Modelling of the control beam --- p.47 / Chapter 3.1.7 --- Reduction in the number of parameters --- p.47 / Chapter 3.2 --- Physical meaning of the simplified PC model --- p.49 / Chapter 3.3 --- Comparison with amplitude equations formalism and others competition models --- p.49 / Chapter 4 --- Mathematical tools --- p.52 / Chapter 4.1 --- Steady states and linear stability analysis --- p.52 / Chapter 4.2 --- Gröbner basis --- p.54 / Chapter 4.3 --- Generalized discriminant --- p.55 / Chapter 4.4 --- Algorithm for conditions for qualitative changes --- p.56 / Chapter 4.5 --- Reduction in computational power --- p.57 / Chapter 4.6 --- Elementary catastrophe theory --- p.58 / Chapter 5 --- Population-competition model analysis --- p.66 / Chapter 5.1 --- Symmetric model L without source term --- p.67 / Chapter 5.2 --- Symmetric model Q without source term --- p.70 / Chapter 5.3 --- Asymmetric model L and Q without source term --- p.74 / Chapter 5.4 --- Symmetric models L and Q with control beam S₂ --- p.80 / Chapter 5.5 --- Asymmetric Model L and Q with control beam S₂ --- p.81 / Chapter 6 --- Semiconductor quantum-well double-microcavity --- p.91 / Chapter 6.1 --- Motivation --- p.91 / Chapter 6.2 --- Transfer-matrix method inside dielectrics --- p.94 / Chapter 6.3 --- Transfer-matrix method across QW --- p.97 / Chapter 6.4 --- Analysis of the QWDM through transfer-matrix method --- p.98 / Chapter 7 --- Conclusion and Outlook --- p.105 / Chapter 7.1 --- Conclusion --- p.105 / Chapter 7.2 --- Outlook --- p.107 / Chapter 7.2.1 --- Extension of the PC model --- p.107 / Chapter 7.2.2 --- Extension of the transfer-matrix method to nonlinear analysis --- p.109 / Bibliography --- p.112 / Chapter A --- Dispersion relations inside QWM --- p.120 / Chapter B --- Analysis on the steady states with and without off-axis instability --- p.122 / Chapter B.1 --- Steady states of E₀ and p₀ --- p.122 / Chapter B.2 --- Analysis on the steady states without off-axis instability --- p.123 / Chapter B.3 --- The effects of instability on E₀ and p₀ --- p.124 / Chapter C --- Analytical derivation of the phase diagram asymmetry versus quadratic terms (δβ1 vs γ) without control beam (S₂ = 0) --- p.127 / Chapter D --- Verification of the elliptic umbilic (D₋₄) singularity --- p.129

An Zhong. / "November 30, 2000." / Thesis (Ph.D.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references (p. [167]-173). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.

by Cheong Lik-ming. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references. / Abstract / Acknowledgments / Chapter Chapter I --- Introduction --- p.1 / Chapter 1.1 --- Definitions of Optical Solitons --- p.1 / Chapter 1.2 --- A Brief History of Optical Solitons --- p.2 / Chapter 1.3 --- Generation of Optical Solitons --- p.4 / Chapter 1.4 --- About the Thesis --- p.6 / References --- p.8 / Chapter Chapter II --- General Theory of Optical Solitons --- p.10 / Chapter 2.1 --- Propagation Equation of Optical Solitons --- p.10 / Chapter 2.2 --- Solving of the NLSE --- p.16 / Chapter 2.2.1 --- Inverse Scattering Transform --- p.17 / Chapter 2.2.2 --- Split-Step Fourier Method --- p.20 / Chapter 2.3 --- Fundamental Solitons --- p.22 / Chapter 2.4 --- Higher Order Solitons --- p.25 / References --- p.27 / Chapter Chapter III --- Modeling of Soliton Generation Systems Part I: Gain Switching and Spectral Windowing --- p.29 / Chapter 3.1 --- General Descriptions --- p.29 / Chapter 3.2 --- About the Gain Switching and Spectral Windowing Method --- p.30 / Chapter 3.3 --- Gain Switching of Semiconductor Laser Diodes --- p.30 / Chapter 3.3.1 --- Rate Equations of Semiconductor Laser Diodes --- p.31 / Chapter 3.3.2 --- Analysis of Gain Switching Pulses --- p.35 / Chapter 3.3.3 --- Propagation of Gain Switching Pulses in Optical Fibers --- p.42 / Chapter 3.4 --- Spectral Windowing --- p.47 / Chapter 3.5 --- Erbium-Doped Fiber Amplifier --- p.50 / Chapter 3.5.1 --- Theoretical Model of Erbium-Doped Fiber Amplifier --- p.51 / Chapter 3.5.2 --- Pulse Evolutions in Erbium-Doped Fiber Amplifier --- p.54 / Chapter 3.5.3 --- Analysis of Amplification for Gain Switching Pulses --- p.55 / Chapter 3.6 --- Optimal Condition for the Gain Switching and Spectral Windowing Method --- p.60 / References --- p.61 / Chapter Chapter IV --- Modeling of Soliton Generation Systems Part II: Fiber Ring Laser --- p.64 / Chapter 4.1 --- General Descriptions --- p.64 / Chapter 4.2 --- About the Fiber Ring Laser Method --- p.65 / Chapter 4.3 --- Principles of the Fiber Ring Laser --- p.66 / Chapter 4.4 --- Mathematical Model of the Fiber Ring Laser --- p.67 / Chapter 4.4.1 --- Cross Phase Modulation --- p.68 / Chapter 4.4.2 --- Evolution Equations in Ordinary Optical Fibers --- p.70 / Chapter 4.4.3 --- Evolution Equations in Erbium-Doped Fibers --- p.71 / Chapter 4.4.4 --- Description of Polarization Controllers --- p.72 / Chapter 4.5 --- Analysis of Optical Pulses Generated from Fiber Ring Lasers --- p.74 / Chapter 4.5.1 --- Properties of the Mode Locking Process --- p.74 / Chapter 4.5.2 --- Pulse Width Analysis --- p.79 / Chapter 4.5.3 --- Constant Pulse Width Analysis --- p.88 / Chapter 4.5.4 --- Self-Starting Process --- p.91 / Chapter 4.6 --- Stimulated Raman Scattering in Fiber Ring Lasers --- p.94 / Chapter 4.6.1 --- Mathematical Descriptions of Stimulated Raman Scattering --- p.95 / Chapter 4.6.2 --- Effects of Stimulated Raman Scattering on Fiber Ring Lasers --- p.98 / Chapter 4.7 --- Comparison of the Two Methods --- p.100 / References --- p.102 / Chapter Chapter V --- Experimental Investigation of Fiber Ring Lasers --- p.105 / Chapter 5.1 --- Experimental Setup --- p.105 / Chapter 5.2 --- Experimental Results --- p.106 / Chapter 5.3 --- Discussions --- p.117 / References --- p.122 / Chapter Chapter VI --- Conclusion --- p.123 / Chapter Chapter VII --- Future Extensions --- p.127 / Appendix I Solving the NLSE by the Inverse Scattering Transform --- p.A1 / Appendix II Solving the NLSE by the Split-Step Fourier Method --- p.A9 / Appendix III Parameter Listing --- p.A12

Title also in Chinese. / Thesis (M.Phil.)--Chinese University of Hong Kong. / Bibliography: leaves 92-93.

Wong Sik Lik = 廣義薛定諤貓態之非經典性質 / 王適力. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references (leaves 120-124). / Text in English; abstracts in English and Chinese. / Wong Sik Lik = Guang yi xue ding e mao tai zhi fei jing dian xing zhi / Wang Shili. / Acknowledgements --- p.i / Abstract --- p.ii / Chapter 1 --- Introduction --- p.1 / Chapter 2 --- Coherent States and Schrodinger Cats --- p.4 / Chapter 2.1 --- Short review on Quantization of single- mode electromagnetic field --- p.5 / Chapter 2.2 --- Number states as field states --- p.6 / Chapter 2.3 --- Coherent states as field states --- p.7 / Chapter 2.4 --- Features of Coherent states --- p.8 / Chapter 2.4.1 --- Coherent states and Minimum Uncertainty --- p.8 / Chapter 2.4.2 --- Coherent states and Poissonian distribution --- p.10 / Chapter 2.5 --- Non- Classical properties of Schrodinger Cat States --- p.12 / Chapter 2.5.1 --- Quadrature Squeezing of ECS --- p.13 / Chapter 2.5.2 --- Photon Statistics of ECS --- p.14 / Chapter 2.5.3 --- Wigner function of ECS --- p.15 / Chapter 2.5.4 --- Q-function of ECS --- p.23 / Chapter 3 --- Generalized Schodinger Cat States : Perelomov's type GSCS & Barut-Girardello's type GSCS --- p.26 / Chapter 3.1 --- Review on SU(1，1) Lie algebra --- p.26 / Chapter 3.2 --- "SU(1,1) Perelomov's type GCS" --- p.28 / Chapter 3.3 --- "SU(1,1) Perelomov's type GSCS" --- p.30 / Chapter 3.4 --- "SU(1,1) Barut-Girardello's type GCS" --- p.32 / Chapter 3.5 --- "SU(1,1) Barut-Girardello's type GSCS" --- p.33 / Chapter 4 --- Nonclassical properties of Perelomov's type GSCS --- p.36 / Chapter 4.1 --- Nonclassical properties of PGSCS of the single-mode realization --- p.36 / Chapter 4.1.1 --- Quadrature Squeezing of PGSCS --- p.36 / Chapter 4.1.2 --- Photon Statistics of PGSCS --- p.41 / Chapter 4.1.3 --- Q-function of PGSCS --- p.43 / Chapter 4.1.4 --- Wigner function of PGSCS --- p.49 / Chapter 4.2 --- Nonclassical properties of PGSCS of the two-mode realization --- p.49 / Chapter 4.2.1 --- Quadrature Squeezing of PGSCS --- p.49 / Chapter 4.2.2 --- Photon Statistics of PGSCS --- p.52 / Chapter 4.2.3 --- Q´ؤfunction for PGSCS --- p.55 / Chapter 4.2.4 --- Wigner function of PGSCS --- p.58 / Chapter 4.3 --- Nonclassical properties of PGSCS of the Holstein-Primakoff realization --- p.60 / Chapter 4.3.1 --- Quadrature squeezing of PGSCS --- p.60 / Chapter 4.3.2 --- Photon Statistics of PGSCS --- p.62 / Chapter 4.3.3 --- Q-function of PGSCS --- p.62 / Chapter 4.3.4 --- Wigner function of PGSCS --- p.69 / Chapter 5 --- Nonclassical properties of Barut-Girardello's type GSCS --- p.71 / Chapter 5.1 --- Nonclassical properties of BGSCS of the two- mode bosonic realization --- p.71 / Chapter 5.1.1 --- Squeezing properties of BGSCS --- p.71 / Chapter 5.1.2 --- Photon Statistics of BGSCS --- p.74 / Chapter 5.1.3 --- Q- function of BGSCS --- p.77 / Chapter 5.1.4 --- Wigner function of BGSCS --- p.77 / Chapter 5.2 --- Nonclassical properties of BGSCS of the Holstein-Primakoff realization --- p.81 / Chapter 5.2.1 --- Squeezing properties of BGSCS --- p.81 / Chapter 5.2.2 --- Photon statistics of BGSCS --- p.83 / Chapter 5.2.3 --- Q- function of BGSCS --- p.83 / Chapter 5.2.4 --- Wigner function of BGSCS --- p.85 / Chapter 6 --- "SU(1,1) Squeezing and Generalized Q´ؤfunction" --- p.90 / Chapter 6.1 --- "SU(1,1) Squeezing of PGSCS & BGSCS" --- p.90 / Chapter 6.1.1 --- "Reviews on SU(1,1) squeezing" --- p.90 / Chapter 6.1.2 --- "SU(1,1) Squeezing of PGSCS" --- p.92 / Chapter 6.1.3 --- "SU(1,1) Squeezing of BGSCS" --- p.93 / Chapter 6.2 --- "SU(1,1) Generalized Q´ؤfunction" --- p.95 / Chapter 6.2.1 --- GQk- function of PGSCS --- p.97 / Chapter 6.2.2 --- GQk-function of BGSCS --- p.101 / Chapter 6.2.3 --- GQk´ؤfunction of Glauber coherent state and Squeezed vacuum --- p.103 / Chapter 7 --- Discussion and Conclusion --- p.109 / Appendices --- p.111 / Chapter A --- Derivation of Equations 4.1 and 4.2 --- p.112 / Chapter B --- Derivation of Equation 4.16 --- p.115 / Chapter C --- Derivation of < n > and < n2 > on P.75 --- p.117 / Chapter D --- Deriavation of Equation 6.10 --- p.119 / Bibliography --- p.120

This thesis discusses nonlinear effects, such as modulation instability and solitons in nano-structured waveguides. The nanoscale optical waveguides have extremely small transverse dimensions, which can provide tight confinement of light. Therefore, by changing the waveguide geometry, the waveguide dispersion can be strongly altered. On the other hand, the confinement also enhances the nonlinear dispersion, allowing for nonlinear optical phenomena supported by dispersion of nonlinearity. The new models governing evolution of the amplitudes of components of the optical waves interacting in the waveguides are derived for continuous wave and pulse wave using perturbation expansion method. The new modulation instability condition is found, as we take into account the dispersion of nonlinearity which is enhanced through a strong variation of the modal profile with the wavelength of light in sub-wavelength waveguides. We demonstrate that this dispersion of nonlinearity can lead to the modulation instability in the regime of normal group velocity dispersion through the mechanism independent from higher order dispersions of linear waves for continuous wave. We address that the new mechanism highly associated with dispersion of nonlinearity in sub-wavelength semiconductor waveguide induces the modulation instability in picsecond regime together with the cascaded generation of higher-order sidebands. The impact of the dispersion of nonlinearity on spectral broadening of short pulses in a silicon waveguide also is considered. We study the temporal evolutions of fundamental and one-ring solitary waves with phase dislocation in dielectric-metal-dielectric waveguides with PT-symmetry and numerically analyze the properties of these nonlinear localized modes and, In particular, reveal different scenarios of their instability.