Accession Number : ADA216978


Title :   Optically Tunable Gratings for Optical Interconnects


Descriptive Note : Final rept. 1 Aug 1986-31 Jul 1989


Corporate Author : ARIZONA UNIV TUCSON OPTICAL SCIENCES CENTER


Personal Author(s) : Stegeman, G I


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA216978


Report Date : 30 Oct 1989


Pagination or Media Count : 9


Abstract : The properties of a nonlinear grating coupler were investigated for application to an all-optical beam scanner for optical interconnects. En route, this program achieved four distinct goals: 1. Bistability was demonstrated for grating coupling into ZnS waveguides utilizing a diffusive nonlinearity (thermal). 2. It was shown theoretically that a diffusive nonlinearity is required to obtain bistability in a nonlinear grating (or prism) coupler. This cleared up a 5 year controversy in the literature. 3. An all-optical beam scanner was demonstrated in which the scan angle of a signal beam is tuned by varying the input power of the control beam. Both smooth and bistable scanning was implemented. 4. This device was analysed theoretically for both non-local and local (Kerr) nonlinearities. It was shown that Kerr nonlinearities lead to a non-unique response.


Descriptors :   *COUPLERS , *OPTICAL CIRCUITS , ANGLES , BEAMS(RADIATION) , BISTABLE DEVICES , CONTROL , COUPLING(INTERACTION) , GRATINGS(SPECTRA) , INPUT , KERR MAGNETOOPTICAL EFFECT , NONLINEAR SYSTEMS , OPTICAL SCANNING , OPTICAL WAVEGUIDES , OPTICS , POWER , SCANNING , SIGNALS , ZINC SULFIDES


Subject Categories : Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE