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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This leads to a strong loss of beam quality above a certain pump power level. For some cases with statistical variations of coupling effects, one may use a coupled-power theory instead of standard theories based on amplitude coupling . Las-Pho, pages Ronald G.
Encyclopedia … combined with a great Buyer’s Guide! This means then that the amplitude contribution which is fed e. A consequence of that is that the power transfer from a mode A to another mode B can be kept very small waveguidees by strongly attenuating mode B. Express 14 13 M. Express 14 13 This picture can serve e.
Light-propagation and imaging in planar optical waveguides
The concept of mode coupling is very often used e. 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 phase modulation phase shift photon density Phys planar polarization power transfer propagation constant R.
Mode Coupling The concept of mode coupling is very often used e. Sorry, we don’t have an article for that keyword! Evolution of mode powers in a long-period fiber Bragg grating, which couples light from the injected fundamental mode radiation into higher-order modes.
If the fiber is strongly bent, this can introduce coupling e. Nonlinear interactions in a waveguide can also couple the modes as calculated for low light intensities to each other.
The book is a completely new survey of the most recent advances in the areas of integrated optics and optelectronics. In this kogrlnik, 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.
Guided-wave optoelectronics – Theodor Tamir – Google Books
B 58,  W. 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, 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.
Bertoni Limited preview – This diagram has been taken from a case study on beam propagation in fiber devices. This mechanism can involve wavveguides a Kramers—Kronig effect or thermal distortions influencing the refractive index profile.
Light-propagation and imaging in planar optical waveguides – IOPscience
Optical resonators cavities can exhibit various kinds of mode coupling phenomena. References to this book Encyclopedia of Optical Engineering: RP Services and Tools. Introduction By T Tamir.
Alferness radiation modes ratio reduced reflection refractive index resonance rib guide shown in Fig signal single-mode slab guide slab oof solutions spontaneous emission structure substrate switch symmetric techniques thickness threshold TM modes transition transverse wave equation waveguide mode wavelength width.
From inside the book. Strong resonant coupling can occur in certain situations, involving frequency degeneracies of resonator modes.
This method is computationally more intense, but can generate more detailed insight. Bertoni Snippet view – Express 19 26B  A.
In high-power fiber amplifiers, a mechanism has been identified which can couple power from the fundamental fiber mode into higher-order modes .
Some examples of mode coupling are discussed in the following: Bend losses can be understood as coupling to non-guided and thus lossy modes. B 58, An optical fiber may have several propagation modes, to be calculated for the fiber being kept straight.
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. Included are sections on basic theory as well as detailed descriptions of fabrication technology, applications and a plethora of available devices. If you like this article, share it with your friends and colleagues, e. This approach is often technically and waveguidess much more convenient than, e.
Instead of using coupled-mode theory, which is based on simplifying assumptions which are not always well fulfilledone kogflnik also study mode coupling phenomena with numerical beam propagation.