Fundamentals of optical waveguides - download pdf or read online
By Katsunari Okamoto
Basics of Optical Waveguides is a necessary source for any researcher, expert or scholar occupied with optics and communications engineering. Any reader attracted to designing or actively operating with optical units should have a company seize of the rules of lightwave propagation. Katsunari Okamoto has awarded this hard expertise in actual fact and concisely with a number of illustrations and equations. Optical thought encompassed during this reference comprises coupled mode conception, nonlinear optical results, finite point procedure, beam propagation approach, staircase concatenation strategy, besides numerous crucial theorems and formulation. because the e-book of the well-received first variation of this booklet, planar lightwave circuits and photonic crystal fibers have absolutely matured. With this moment version the advances of those fibers besides different advancements on present optical applied sciences are thoroughly specified. This entire quantity allows readers to completely study, layout and simulate optical atmospheres. * extraordinary new bankruptcy on Arrayed-Waveguide Grating (AWG) * extensive dialogue of Photonic Crystal Fibers (PCFs) * Thorough clarification of Multimode Interference units (MMI) * complete assurance of polarization Mode Dispersion (PMD). Read more...
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45) and 'rr + = ( p - 1)~,=(q- '11" 1)~ (p=l,2 .... 46) (q-- 1, 2 . . ). We should note here that the integers p and q start from 1 because we follow the mode definition by Marcatili. To the contrary the mode number m in Eq. 12) for the slab waveguides starts from zero. By the conventional mode definition, the lowest mode in the slab waveguide is the TEn= 0 mode (Fig. 7(a)) which has one electric field peak. On the other hand, the lowest mode in the rectangular waveguides is Ep=l,q=1 o r E;=l,q= 1 mode (Fig.
Together with such low loss properties, low dispersion is also required for signal transmission. Signal distortion due to dispersion of the fiber is closely related to the guiding structure of optical fibers. In order to realize low-dispersion fibers, it is necessary to understand the transmission characteristics of fibers and to design and analyze the arbitrarily shaped guiding structures. In this chapter, first a rigorous analysis of step-index fiber is presented, to understand the basic properties of optical fibers.
But in the present Kumar's method, an improvement of the accuracy of the propagation constant can be obtained by the perturbation method with respect to RectangularWaveguides 35 the shaded area in Fig. 13. We rewrite the refractive-index distribution for the rectangular waveguide as n 2 (x, y) -- N2 (x) + N2 (y) + a. 71) where 8 is a small quantity and ~-xl(x, y) denotes the perturbation term which is expressed by Ixl>a ~" xl(x' Y) = 0 Ix[ ~d lyl ~
Fundamentals of optical waveguides by Katsunari Okamoto