A NEW PRINCIPLE FOR CREATING AN OPTOCHEMICAL SENSOR ON THE BASIS OF AWAVE-GUIDE WITH MOVING BORDERS

The possibility of creating a plane optical waveguide with mobile bord ers is proposed on the basis of crystals with the property of cleavage . In such a structure it is easy to modulate the wave phase and change the frequency. The condition of phase matching which is necessary for efficient generation of second harmonics can be achieved by changing the thickness of the intermediate layer of the waveguide. The phenomen a mentioned here allow us to determine with great accuracy the value o f the refraction index of many liquids. Thus one can develop an optoch emical sensor on the basis of plane optical waveguide with mobile bord ers.