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Thursday, July 23, 2020 | History

2 edition of Path-integral analysis of passive graded-index waveguides found in the catalog.

Path-integral analysis of passive graded-index waveguides

Constantinos Christofi Constantinou

Path-integral analysis of passive graded-index waveguides

by Constantinos Christofi Constantinou

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Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D)-University of Birmingham, School of Electronic and Electrical Engineering.

Statementby Constantinos Christofi Constantinou.
ID Numbers
Open LibraryOL13929330M

Periodic media are fundamentally important for controlling the flow of light in photonics. Recently, the emerging field of non-Hermitian optics has generalized the notion of periodic media to include a new class of materials that obey parity-time (PT) symmetry, with real and imaginary refractive index variations that transform into one another upon spatial inversion, leading to a variety of. The authors have demonstrated a planar, monolithically integrated lensed, asymmetric graded index fiber-to-waveguide coupler with dB coupling loss at nm.

waveguide dispersion. Similarly, it is easy to incorporate more than one core into the photonic crystal cladding, allowing one to form arrays of coupled or independent waveguide. In solid core PCFs, as in all TIR fibers, the vast majority of light propagates in the glass. Hollow core fibers: Hollow core fibers employ. Ray T. Chen, "Graded-Index Single-Mode Polymer Waveguide Hologram on GaAs Substrate for Near-Infrared Twelve-Channel Wavelength Division Demultiplexer," Proc. SPIE, Vol. , pp. (). Ray T. Chen and J. Jannson, "Single and Multiplexed Polymer-based Chirped Grating Lenses working at nm on a Semi-insulating GaAs Substrate,"

Dear Colleagues, We cordially invite you to contribute to this Special Issue on ion exchange in glasses and crystals. As you know, the ion-exchange reaction may be defined, according to , as any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions) that involves an exchange of one or more ionic components. Moments for Multilayer Graded-Index Dielectric Waveguide Structures,” IEE Proc. Optoelectronics, vol. , no. 3, pp. , June • K. A. Remley and A. Weisshaar, “Impedance Boundary Method of Moments for Efficient Analysis of Lossy and Leaky Planar Optical Waveguide.


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Path-integral analysis of passive graded-index waveguides by Constantinos Christofi Constantinou Download PDF EPUB FB2

Path-integral analysis of passive, graded-index waveguides applicable to integrated optics. by Constantinos Christofi Constantinou. A thesis submitted to the Faculty of Engineering of the University of Birmingham for the degree of Doctor of Philosophy.

School of Electronic and Electrical Engineering, University of Birmingham, Birmingham B15 2TT. The Feynman path integral is used to describe paraxial, scalar wave propagation in weakly inhomogeneous media of the type encountered in passive integrated-optical communication devices.

Most of the devices considered in this work are simple models for graded-index waveguide structures, such as tapered and coupled waveguides of a wide variety Cited by: Path-integral analysis of passive graded-index waveguides book.

The Feynman path integral is used to describe paraxial propagation in an exponentially tapered graded-index optical waveguide. Expressions are obtained for both the propagator and for the ground state to ground state coupling efficiency of this tapered by: 3.

Optical waveguides can be classified according to their geometry, mode structure, refractive index (RI) distribution, and material. A dielectric optical waveguide comprises a longitudinally extended high-index medium called the Core, which is transversely surrounded by a low-index medium, called the Cladding.A guided optical wave propagates in the waveguide along the longitudinal by: 4.

The book offers detailed descriptions of the phenomena, devices and technology used in optical integrated circuits and their relationships to fibre optics are described. Path-integral analysis. Martin N.

Weiss, Ramakant Srivastava, Spectral characteristics of asymmetric directional couplers in graded index channel waveguides analyzed by coupled-mode and normal-mode techniques, Applied Optics, /AO, 34, 6, (), (). Katsunari Okamoto, in Fundamentals of Optical Waveguides (Second Edition), Publisher Summary.

This chapter reviews planar optical waveguides, which are the key devices to construct integrated optical circuits and semiconductor lly, rectangular waveguides consist of a square or rectangular core which is surrounded by a cladding with lower refractive index than that of.

A generalisation of the impedance boundary method of moments (IBMOM) for application to multilayer graded-index dielectric waveguides is proposed.

The transverse field in each layer is expanded in local basis functions and matched at the interfaces between the layers. Exact impedance boundary conditions are applied at the two interfaces between the guiding region and cladding regions. Graded index polymer waveguides have been fabricated and evaluated by different groups, and are benefical due to their low crosstalk, and low coupling loss with optical fiber.

Ishigure Lab at Keio University in Japan is a leading research lab in the field of graded index polymer waveguide research where they use the Mosquito method to fabricate.

46 minutes ago  Zhou, 3 and W. Conventional waveguides, such as those used in passive fiber-optics 2,11 with silica glass-core, only lose about 4% of their energy at the transition from the air to the fiber-optic glass-core, and vice versa, therefore this efficiency problem is much less significant in passive glass-based optical fibers.

Ag + -Na + ion exchange is a cheap and productive method of fabricating active and passive planar integrated optical devices [1][2][3]. Waveguides produced in the superficial layer of a glass. Fundamentals of Optical Waveguides is an essential resource for any researcher, professional or student involved in optics and communications engineering.

Any reader interested in designing or actively working with optical devices must have a firm grasp of the principles of lightwave propagation. Fields-based analysis, characteristic equation for TE mode, graphical solution, -kz diagram Asymmetric slab guide, characteristic equation, dispersion relation Power flow, symmetric and asymmetric guides, effective guide thickness Radiation modes, characteristic equation, graphical solution 2,3Planar graded-index waveguides: 3 lectures.

The increasing interest in optical waveguides and the increasing complexity of waveguide devices have stimulated the development of mathematical tools for waveguide analysis. One set of important but difficult problems is characterizing propagation in inhomogeneous structures, i.e.

waveguide structures that vary in the direction of propagation. 13 Graded-Index Slab Waveguides 61 14 Lossy, Leaky, and Active Planar Multilayer Waveguides 72 Passive waveguides, electro-optic components, transmitters, receivers, active waveguides, and driving electronics can be integrated into an optical/electronics chip using planar technology, similar to Then the graded-ndex waveguide analysis is.

KEYWORDS: Amorphous silicon, GRIN lenses, Refractive index, Waveguides, Polarization, Etching, Silicon, Wave propagation, Waveguide modes, Tolerancing Read Abstract + A monolithically integrated asymmetric graded index (GRIN) waveguide structure for coupling light into high index contrast waveguides is described.

Following the analysis of Saunders and Bonar for propagation over multiple knife-edge models of building rows of irregular height and spacing, the Monte-Carlo integration technique is extended to consider three-dimensional knife-edge and plateau diffraction.

We describe the fabrication of graded index polymer waveguides, using the Mosquito and photo-addressing methods, and graded index glass waveguides, using ion diffusion on thin glass foils.

A comparative characterization was carried out on the waveguide classes to show a clear reciprocal dependence of the performance of different waveguide. Introduction. The success of optical fibers for lightwave communications, employing silica (i.e., amorphous SiO 2) as base material, has paved the way to a large use of optical glasses in photonic applications and, in particular, integrated optics (IO).The field of IO had been conceived in 1 to complement the passive transmissive medium (i.e., the optical fibers) with integrated chips.

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Pretty Funny Girl Podcast YouTube Power Hour Podcast: Full text of "Planar Optical Waveguides and Fibres". C. Huang, Z. Wu, R.D. Nevels, Stationary phase Monte Carlo path integral analysis of electromagnetic wave propagation in graded-index waveguides.

IEEE Trans. Microw. Theory Tech. 42, – () CrossRef Google Scholar.You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.Book Wars Pod BurgerHub Physical Education Rio16 OS i Korruption Core Connections - Video Civil Liberties - Tracks.

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