Albert Einstein, 1879-1955, German theoretical physicist and Nobel Prize laureate.
Ajoy K. Ghatak Libri
Ajoy Ghatak è un fisico e autore, riconosciuto per i suoi significativi contributi nel campo dell'ottica. La sua vasta opera, comprendente numerosi articoli di ricerca e influenti libri di testo, ha fatto progredire la comprensione dei fenomeni ottici. L'impegno di Ghatak per l'istruzione e la sua acuta ricerca hanno profondamente influenzato lo studio della luce e delle sue proprietà, ispirando sia studenti che colleghi ricercatori.
The propagation of electromagnetic waves in "square-law" media, i.e., media characterized by a quadratic spatial variation of the dielectric constant, has been a favorite subject of investigation in electromagnetic theory. However, with the recent fabrication of glass fibers with a quadratic radial variation of the dielectric constant and the application of such fibers to optical imaging and communications, this subject has also assumed practical importance. Comparison of experimental results on propagation, resolu tion, and pulse distortion in such inhomogeneous waveguides with theory has put the field on a sound base and spurred further work. The present book aims at presenting a unified view of important aspects of our knowledge of inhomogeneous optical waveguides. A brief discussion of homogeneous dielectric waveguides is unavoidable, since itforms a basis for the appreciation of inhomogeneous waveguides. A short course based on some chapters of this book was offered to graduate students at IIT Delhi and was well received. We consider that despite the unavoidable mathemati cal nature of the present book, the comparison of experimental results with theory throughout and the description of fabrication technology (Appen dixes A and B) should make its appeal universal. The authors are grateful to Dr. K. Thyagarajan for writing most of Chapter 9 and to their colleagues Dr. I. C. Goyal, Dr. B. P. Pal, and Dr. A."
