PROPAGATION OF WAVES IN OPTICAL WAVE-GUIDES WITH A PERIODICALLY VARYING REFRACTION INDEX

The effects that appear when waves propagate in optical waveguides whose refraction index is modulated with a relatively low frequency are considered for the purpose of studying the possibility of doubling the carrier frequency of the propagating wave with simultaneous amplification of the amplitude. Such frequency doubling can be used to create the sources of coherent optical radiation in a wide wavelength range with a relatively low-frequency power supply.