41. The geometry of a waveguide reflects its function. 42. These expressions neglect the effect of resistive loss in the walls of the waveguide . 43. Transverse modes occur because of boundary conditions imposed on the wave by the waveguide . 44. A quartz waveguide allows all of the light from the plasma to be collected. 45. Phonon-polaritons propagate laterally away from the excitation region and into the waveguides . 46. The second waveguide type is a buried heterostructure. 47. However, any electromagnetic wave must obey the ultrashort pulses down highly dispersive waveguides . 48. My first job was with a TV station with BIG tubes and copper waveguides . 49. Their main technological application is as optical waveguides in both planar and fiber form. 50. Beam propagation method ( BPM ) can solve for the power flow in waveguides .
