Waveguide cylindrical

Figure4b. Cell in microwave cavity (l)resonator, (2) waveguide, (3) cylindrical exit, (4) electrochemical cell, (5) working electrode, (6) electrolyte, (7) counter-electrode, (8) contact wire to working electrode, (9) opical light guide.

Fig. 9. The TE01i cylindrical resonant cavity. The manner in which the waveguide couples to the cavity is also shown. The symbols X and represent the Ei field or the current distribution (35).

There are several types of optical waveguides - planar waveguides and cylindrical waveguides (optical fibers). Basic optical waveguide geometries are shown in Figure 1. 

C., Floekstra Fl.J.W.M.and Driessen A., Vertically and laterally waveguide-coupled cylindrical micro resonators in SisN4 on SiC>2 technology, Appl. Phys. B 2001 73 603-608. 

This first family of laboratory equipment was no more commercial since the closing down of the Prolabo French company. The support is made by CEM [45]. However, we describe these system because many laboratories use these devices [46]. The Synthewave 402 and 1000 are systems devoted to laboratory synthesis [47, 48]. They are constituted by a closed rectangular waveguide section playing the role of cavity. The magnitude of microwave power available is 300 W. They can use cylindrical tubes with several diameters. A condenser could be connected to the tube. The originality of this setup is to allow measurements of temperature by an infrared pyrom-... 

For several years M. Delmotte et al. have designed a microwave reactor for high pressure chemistry [63]. The microwave applicator and reactor are identical in order to accommodate the mechanical constraints induced by high pressure within liquids. This is the main interest of this device. The metallic cylindrical pipe is simultaneously a waveguide and the reactor. The device is described by Fig. 1.15. 

Fig. 1.15 The supercritical microwave reactor applicator The two cones are cylindrical waveguides for microwave power supply (courtesy of M. Delmotte).

Moon, H. J. Park, G. W. Lee, S. B. An, K. Lee, J. H., Waveguide mode lasing via evanes cent wave coupled gain from a thin cylindrical shell resonator, Appl. Phys. Lett. 2004, 84, 4547 4549... 

The experiment in this discussion employed a cylindrical resonant cavity, which is formed by closing the ends of a cylindrical waveguide with conducting plates on its ends as shown in Fig. 15.1 (Montgomery, 1947). 

T. R. Glass, S. Lackie, and T. Hirschfeld, Effect of numerical aperture on signal level in cylindrical waveguide evanescent fluorosensors, Appl. Opt. 26, 1218-1287 (1987). 

The cylindrical coordinates and the field vectors can be normalized in the same way as for the straight waveguide ... 

P. Bienstman, H Derudder, R Baets, F Olyslager and D. De Zutter, Analysis of cylindrical waveguide discontinuities using vectorial eigenmodes and perfectly matched layers, TfiTiii Trans. Microwave Theory Tech. 49, 349-354 (2001). 

The transmittance of the nonlinear step-like discontinuity in cylindrical waveguide has been evaluated under the assumption that profiles of low-intensity nonlinear modes can be approximated by profiles of linear modes. According to the results, nonlinear transmittance is less or greater than the linear one depending on waveguide parameters of the first and the second waveguides, Vi = kafafg 2= ka2(nf respectively. 

Key A, cylindrical microwave cavity 6, cylindrical tube for sample insertion C, rectangular waveguide D, nut for adjustment of sample position E, thermocouple ports. 

The former French company Prolabo developed two microwave systems for synthesis7. The machines were employed in several research laboratories mainly for solvent-free organic chemistry. They had monomodal rectangular waveguide sections that also served as microwave cavities. Cylindrical tubes could be inserted and rotated to increase thermal homogeneity and if required condensers could be fitted. Temperature measurement was by infrared pyrometry. Computer control enabled reaction monitoring with respect to temperature or power. 

Fig. 9.11 Propagation of light through (a) a planar waveguide and (b) through a cylindrical optical fiber...

Smith, 1991] Smith, J. O. (1991). Waveguide simulation of non-cylindrical acoustic tubes. In Proc. 1991 Int. Computer Music Conf, Montreal, pages 304-307. Computer Music Association. 

Waveguide model of a single-reed, cylindrical-bore woodwind, such... 

Waveguide-based devices can take on different configurations depending on the guiding structures employed cylindrical (optical fibers and capillary waveguides) or planar. 

Integration of a lens was also achieved by molding a cylindrical lens together with a PDMS channel. Both the lens and the channel serve as an optical waveguide for fluorescent detection of FITC-labeled albumin (LOD = 0.3 g/L) [689]. 

The most frequently used ferrite device is a three-port circulator in waveguide or stripline configuration, as illustrated in Fig. 9.54. In the waveguide configuration a ferrite cylindrical disc is located symmetrically with respect to the three ports. In the stripline configuration two ferrite discs are placed on each side of the strips. In both cases a magnetic field is applied perpendicular to the planes of the discs. 

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