Title :
An ARROW directional coupler acousto-optic filter
Author :
Tong, E.S. ; Chaudhuri, S.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
A directional coupler filter composed of two ARROW waveguides is proposed. The TE/sub 0/ of one guide and the TE/sub 1/ of the other are brought to a matching condition for a given wavelength using acoustically induced gratings. The wavelength-dependent loss discrimination of the TE/sub 1/ is employed as an additional element for bandwidth reduction and side lobe suppression.<>
Keywords :
acousto-optical devices; acousto-optical filters; light reflection; optical directional couplers; optical fibre couplers; optical fibre losses; ARROW directional coupler acousto-optic filter; ARROW waveguides; TE/sub 0/; TE/sub 1/; acoustically induced gratings; antiresonant reflecting optical waveguide; bandwidth reduction; directional coupler filter; matching condition; side lobe suppression; wavelength-dependent loss discrimination; Acoustic waveguides; Directional couplers; Finite difference methods; Optical filters; Optical refraction; Optical variables control; Optical waveguides; Semiconductor waveguides; Tellurium; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407835
