RT Journal Article T1 Effects induced on the transverse-spatial-impulse response of an inhomogeneous photoreceptor with a nonsymmetric refractive index profile and arbitrarily located origin A1 Mondal, Pronab K. AB In a few earlier communications, spatial-transverse-impulse response (STIR) associated with the initial field transversely distributed across the entrance pupil of an inhomogeneous optical wave guide (photoreceptor) has been investigated. In the present work, effects of indetermination in the location of the origin on an arbitrarily defined refractive index profile, representing the degree of inhomogeity at the aperture pupil of a single receptor, have been studied. Some consequences related to a few possible technical applications have been discussed. AB In alcune precedenti comunicazioni, è stata studiata la risposta spaziale dell'impulso traverso (STIR) associato con il campo iniziale a distribuzione trasversale distribuito attraverso la pupilla d'ingresso di una guida d'onda ottica inomogenea (fotorecettore). In questo lavoro si sono studiati gli effetti d'indeterminazione nella collocazione dell'origine su un profilo d'indice rifrattivo definito arbitrariamente, che rappresenta il grado di inomogeneità alla pupilla di apertura di un singolo recettore. Sono state discusse alcune conseguenze in relazione con poche possibili applicazioni tecniche. AB В некоторых предыдущих публикациях исследовался пространственный поперечный импульсный отклик, свазанный с начальм полем, поперенно распределенными поперек входного зрачка неоднородного оптического волновода (фоторецептора). В данной работе изучается влияние неопреденности в местоположении начала на произвольно определенный профиль показателя преломления, представляющий степень неоднородности на апертурном зрачке отдельного рецептора. Обсуждаются некоторые следствия, связанные с возможными техническими приложениями. PB Editrice Compositori Bologna SN 0392-6737 YR 1987 FD 1987-03 LK https://hdl.handle.net/20.500.14352/59096 UL https://hdl.handle.net/20.500.14352/59096 NO 1. M. L. Calvo and V. Lakshminarayanan: J. Opt. Soc. Am., submitted to. 2. M. L. Calvo: Biol. Cybern.,54, No. 3, 201 (1986). 3. J. M. Enoch and G. Fry: J. Opt. Soc. Am.,48, No. 12, 899 (1958). 4. R. Barer: J. Opt. Soc. Am.,47, No. 6, 545 (1957). 5. M. L. Calvo, J. L. Escudero and E. Bernabeu: Refractive index profile control in optical fibers by interferential contrast microscopy and microscopy photometry, inProceedings of the II Jornadas Comunicaciones Opticas (ed. Camara de Comercio e Industria), Madrid, Companía Telefónica Nacional de España, CTNE (1985), p. 108. 6. F. M. E. Sladen, D. N. Payne and M. J. Adams: Appl. Phys. Lett.,28, No. 5, 255 (1976). 7. M. De and P. K. Mondal: J. Res. Natl. Bur. Stand ., Sect. C,69, 199 (1965). 8. C. Pask and K. F. Barrel: Biol. Cybern.,36, 1 (1980). 9. R. F. Alvarez-Estrada and M. L. Calvo: J. Phys. D,17, 475 (1984). 10. P. M. Morse and H. Feshbach: Methods of Theoretical Physics, Vol.1 (McGraw-Hill, New York, N. Y., 1953). 11. See, for example,M. Born and E. Wolf: Principles of Optics, 6th edition (Pergamon Press, London, 1980), p. 47. 12. E. Snitzer: J. Opt. Soc. Am.,51, 491 (1961). 13. R. F. Alvarez-Estrada, M. L. Calvo and P. Juncos: Opt. Acta,27, 1367 (1980). 14. A. W. Lohman and D. P. Paris: J. Opt. Soc. Am.,55, 1007 (1965). 15. J. M. Enoch: Am. J. Ophthalmol.,51, No. 5, Part II, 1107/235–1118/246 (1961). 16. T. Kuwubara: Am. J. Ophthalmol.,70, 187 (1970). 17. J. M. Enoch, J. Scand rett and F. L. Tobey: Vision Res.,13, 171 (1973). 18. R. L. Sidman: J. Biophys. Biochem. Cytol.,3, 15 (1957). 19. A. W. Snyder and J. D. Love: Optical Waveguide Theory (Chapman and Hall, London, New York, N. Y., 1983), Chapt. 12. 20. T. Caelli: Visual Perception Theory and Practice (Pergamon Press, New York, N. Y., 1981), Chapt. 8. 21. B. Borwein, D. Borwein, J. Medeiros and J. McGowan: Am. J. Anat.,159, 125 (1980). 22. B. R. Horowitz: Theoretical considerations of the retinal receptors as waveguide, inVertebrates Photoreceptor Optics, edited byJ. M. Enoch and F. L. Tobey, Springer Series in Optical Sciences (Springer-Verlag, Berlin, Heidelberg, New York, N. Y., N. Y., 1981), Chapt. 6, Sect. 1. 23. M. Abramowitz and I. Stegun (Editors): Hand book of Mathematical Functions (Dover, New York, N. Y., 1965), Chapt. 9, formula 9.6.4. NO © Kluwer Academic Publishers. DS Docta Complutense RD 2 may 2024