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H. Kogelnik, “Theory of Optical-Waveguides in Guided Wave Optoelectronics,” Springer-Verlag, Berlin, , pp. H. Kogelnik, “Theory of dielectric waveguides,” in Integrated Optics,T. Tamir, Ed. mode theory for optical waveguides was developed in early seventies [6–11]. optics. This chapter is devoted to the theory of these waveguides. Other chapters of .. which is taken from KOGELNIK and RAMASWAMY.

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Introduction By T Tamir. The concept of mode coupling is very often used e. Instead of using coupled-mode theory, which is based on simplifying assumptions which are not always well fulfilledone can also study mode coupling phenomena with numerical beam propagation. A 11 3 B 58, Written by nine authors who are internationally recognized authorities wavegiudes their areas, the book contains thekry on optical waveguides, ootical junctions and other thin-film components, lithium-niobate LiNbO3 devices, guided-mode semiconductor GaAs and related lasers and integrated optic devices.

RP Services and Tools. Express 19 26B This means then that the amplitude contribution which is fed e. The book is a completely new survey of the most recent advances in the areas of integrated optics and optelectronics.

This leads to a strong loss of beam quality above a certain pump power level.

Light-propagation and imaging in planar optical waveguides

In high-power fiber amplifiers, a mechanism has been identified which can couple power from the fundamental fiber mode into higher-order modes [12].

Bertoni Snippet view – This mechanism can involve either a Kramers—Kronig effect or oogelnik distortions influencing the refractive index profile. Express 19 lf[13] A. These equations contain coupling coefficients, which are usually calculated from overlap integrals, involving the two mode functions and kgelnik disturbance causing the coupling.

An important physical aspect of such coherent mode coupling phenomena is that the optical power transferred between two modes depends on the amplitudes which are already in both modes.

Nonlinear interactions in a waveguide can also couple the modes as calculated for low light intensities to each other. In addition, it will serve as a comprehensive reference manual for the theory and application of the most recent thin-film optical and optoelectronic technology. B 58, [7] W.


Common terms and phrases absorption achieved active layer active region AlGaAs amplifier Appl applications approximately band bandwidth branch capacitance cavity channel guide channel waveguides components confinement coupled-mode coupling loss curves depends devices dielectric diffusion directional coupler effective index electric field electro-optic electro-optic effect electrode epitaxial etched fabricated fiber filter frequency function GaAs gain compression given grating guided modes heterojunction IEEE increases index change InGaAsP input integrated optics length Lett LiNbO3 linear linewidth lithium niobate loss modal mode amplitudes mode conversion normal modes obtained optical waveguides output power parameters parasitics koogelnik modulation phase shift photon density Phys planar polarization power transfer propagation constant R.

This picture can serve e. Mode Coupling The concept of mode coupling is very often used e.

Guided-wave optoelectronics – Theodor Tamir – Google Books

Express 14 13[10] M. In this way, mode B is prevented from acquiring sufficient power to extract power from mode A efficiently, so that mode A experiences only little loss, despite the coupling. The field evolution has been calculated with numerical beam propagation, and the local mode powers have been obtained from the results using overlap integrals with the mode functions as obtained from a mode solver applied to the bare fiber.

From inside the book. Contents Introduction By T Tamir. Las-Pho, pages Ronald G. This nonresonant nature of the coupling means that the coupling thery in general have a small effect — which is essential for laser operation with high beam qualitysince otherwise aberrations would strongly excite higher-order modes, having a higher beam wavegudes product.

References to this book Encyclopedia of Optical Engineering: Driggers Limited preview – Encyclopedia … combined with a great Buyer’s Guide! A consequence of that is that the power transfer from a mode A to another mode B can be kept very small simply by strongly attenuating mode B.

For some cases with statistical variations of coupling effects, one may use a coupled-power theory instead of standard theories based on amplitude coupling [11].

Mode Coupling

Express 19 26B [12] A. For example, aberrations of the thermal lens in the gain medium of a solid-state bulk laser couple the modes of the laser resonatoras calculated without these aberrations. The book should be of great interest to all researchers and engineers involved with integrated optics, optoelectronics and electro-optic systems and devices. Alferness radiation modes ratio reduced reflection refractive index resonance rib guide shown in Fig signal single-mode slab guide slab waveguide solutions spontaneous emission structure substrate switch symmetric techniques thickness threshold TM modes transition transverse wave equation waveguide mode wavelength width.


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Springer- Science – pages. Bertoni Limited preview – Optical resonators cavities can exhibit various kinds of mode coupling phenomena. This diagram has been taken from a case study on beam propagation in fiber devices.

This approach is often technically and conceptually much more convenient than, e. The basic idea of coupled-mode theory is to decompose all propagating light into the known modes of the undisturbed device, and then to calculate how these modes are coupled with each other by some additional influence.

My library Help Advanced Book Search. Strong resonant coupling can occur in certain situations, involving frequency degeneracies of resonator modes.

Because of the systematic arrangement of tjeory chapters, the book should also be very useful to graduate and senior undergraduate students. This method is computationally more intense, but can generate more detailed insight. Typically, the applied procedure is first to calculate the mode amplitudes for the given light input, then to propagate these amplitudes based on the above-mentioned coupled differential equations e.

Guided-wave optoelectronics Volume 26 of Springer series in electronics and photonics. Waveguide Transitions and Junctions.

Evolution of mode powers in a long-period fiber Bragg grating, which couples light from the injected fundamental mode radiation into higher-order modes. Bend losses can be understood as coupling to non-guided and thus lossy modes.

If the fiber is strongly bent, this can introduce coupling e.