Ghosh , Tapas <br/><br/>
Theoretical estimation of refractive index profiles of continuous -wave ultra-violet written wave guides in lithium nibate and design of a directional coupler based on this waveguide 
researched by Tapas Ghosh ; guided by Paresh Chandra Jana and Pranabendu Gangopadhyay . 
 - Midnapore :  Vidyasagar University ;  2018. 
 - 167p. :  ill. , charts :  30 cm.  +1 CD. 
<br/><br/>Includes references . 
<br/><br/><label>Subjects--Index Terms: </label>Wave guide Microwave electronics-component of devices 
<br/><br/><label>Dewey Class. No.: </label>621.381331  / GHO/T