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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Guided-wave optoelectronics – Theodor Tamir – Google Books

These equations contain coupling coefficients, which are usually calculated from overlap integrals, involving the two mode functions and the disturbance causing the coupling.

Written by nine authors who are internationally recognized authorities in their areas, the book contains chapters on optical waveguides, lightwave junctions and other thin-film components, lithium-niobate LiNbO3 devices, guided-mode semiconductor GaAs and related lasers and integrated optic devices. Because of the systematic arrangement of its chapters, the book should also be very useful to graduate and senior undergraduate students.

Express 19 11 Encyclopedia … combined with a great Buyer’s Guide!

Light-propagation and imaging in planar optical waveguides

This mechanism can involve either a Kramers—Kronig effect or thermal distortions influencing the refractive index profile. 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.

If you like this article, share it with your friends and colleagues, e. My library Help Advanced Book Search. Technically, the mode coupling approach is often used in the form of coupled differential equations for the complex excitation amplitudes of all the involved modes.

B 58, Sorry, we don’t have an article for that keyword! An optical fiber may have several propagation modes, to be calculated for the fiber being kept straight. The book is a completely new survey of the most recent advances in the areas of integrated optics and optelectronics. Bend losses can be understood as coupling to non-guided and thus lossy modes. Bertoni Limited preview – Introduction By T Tamir.


Strong resonant coupling can occur in certain situations, involving frequency degeneracies of resonator modes. Optical resonators cavities can exhibit various kinds of mode coupling phenomena. 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.

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. The book should be of great interest to all researchers and engineers involved with integrated optics, optoelectronics and electro-optic systems and devices.

B 58, [7] W. Express 19 11[13] A.

Written by nine authors who are internationally recognized authorities in their areas, the book contains chapters on optical waveguides, lightwave junctions and other thin-film components, Evolution of mode powers in a long-period fiber Bragg grating, which couples light from the injected fundamental mode radiation into higher-order modes.

References to this book Encyclopedia of Optical Engineering: A consequence of that is that the power waveeguides from a mode A to another mode B can be kept very small simply by strongly attenuating mode B.

Waveguide Transitions and Junctions. A 11 3 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. RP Services and Tools. 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.


This method is computationally more intense, but can generate more detailed insight.

Mode Coupling

Express 19 26B From inside the book. Express optidal 13[10] M. 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. This leads to a strong loss of beam quality above a certain pump power level.

In this situation, however, not all involved modes are necessarily resonant at the same kogepnik. In this way, mode B is prevented from acquiring sufficient power to extract power koge,nik mode A efficiently, so that mode A experiences only little loss, despite the coupling. Mode Coupling The concept of mode coupling is very often used e. 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].

This nonresonant nature of the coupling means that the coupling will 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 parameter product. Nonlinear interactions in a waveguide can also couple the modes as calculated for low light intensities to each other.

Springer- Science – pages. This means then that the amplitude contribution which is fed e. In high-power fiber amplifiers, a mechanism has been identified which can couple power from the fundamental fiber mode into higher-order modes [12]. Contents Introduction By T Tamir.