Directing effects INDEX

The two important properties of the waveguide mode are its cross-sectional electric field amplitude profile A(x,y) and the effective index /VelT. Here x and y are the coordinates in the plane perpendicular to z, the waveguide propagation direction. The electric field at any point along the waveguide is given by... 

Different longitudinal sections in the structure may generally have very different refractive index profiles, and thus their eigenmode functions can strongly differ, too. As they have to be well-represented by the superposition of modes of other sections, the number M of considered eigenmodes needs to be sufficiently large (typically from tens to hundreds), and it means that many of these modes are evanescent in the direction of propagation (for their effective indexes, Re lV < 0). 

Of the SSRIs, paroxetine is the agent most likely to cause weight gain however, in this study the authors reported no change in body mass index during the 3 months of treatment, suggesting a more direct effect of paroxetine on metabolism. Further work will be needed to see if similar metabolic effects are associated with other SSRIs and in patients with other treatment indications. 

Monthly, quarterly, semiannually, or yearly, you may have to compose or contribute to a written resesirch report. A well organized one effectively indexes your work, so it makes retrieving information easy. You ll find yourself consulting your own reports long afterward when you seek data for a patent application or a scientific publication. An old report will refresh your memory and so speed your efforts to contribute to the application or publication. Composing a research report sharpens your appreciation of your own work, even if you recently completed the job. It can point out omissions that you can rectify, foster fresh interpretations of old data, and thereby suggest new directions to take. Reviewing work done several weeks or months ago prepares you to appraise your own performance, which you may do once or twice a year. 

In order to describe the microdisk modes, the product of nR needs be known to several decimal places. An accurate value of nR may come directly from the FT of the emission spectrum [122]. Figure 22.38b is the FT of the emission spectrum in Figure 22.39a. If the units of the emission spectrum are measured in wavevector (fc = 2ir/A) then the unit of the FT is length [214]. In Figure 22.38b a single series of well-spaced peaks can be observed. The FT gives peaks at nR of 50.7 p,m. The physical disk diameter, D = 2R is 55 p,m and from the measured value of nR it gave 1.84 as the effective index of refraction. This value indicates that the fields of these modes are entirely contained within the polymer disk since the index of refraction of the DOO-PPV polymer is 1.8, which was measured by elipsometry on an unetched polymer film. 

Extensive treatment of optical waveguide and directional coupler theory has been addressed by many researchers for both continuous two-dimensional film waveguides and dielectric strip waveguides. Various methods, such as dielectric waveguide, coupled-mode theory, effective index, the beam propagation method, and finite-element analysis, have been used [15,24,25,75,77,78,83,89-114]. Analysis of these methods shows good agreement between all of the different models. 

The effective index method used for the dielectric waveguide structure fabricated for this experiment (illustrated in Fig. 9) is performed by dividing the three-dimensional waveguide into two two-dimensional waveguides. The first is 2-D Waveguide I, with light confinement in the z direction. The second is 2-D Wave-... 

This function represents a direct stochastic index of vibration protection efficiency that shows protection effectiveness when its value is smaller than one. At the same time, a value of the OF close to the unit indicates practically negligible effects in vibration control (greater values are for negative TMD effects, increasing main structure displacements). The conventional optimum solution is performed assuming that all parameters involved in the problem are deterministic, and the unrestricted approaches of (6) and (7) are for this specific case ... 

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