Title :
Low drive-power integrated acoustooptic filter on X-cut Y-propagating LiNbO/sub 3/
Author :
Smith, David A. ; Johnson, John J.
Author_Institution :
Bellcore, Red Bank, NJ, USA
Abstract :
The authors fabricated very low power integrated acoustically tunable optical filters using walkoff-compensated miniature interdigital transducers, coupled to narrow-width acoustic waveguides. Nearly 100% transverse electric-transverse magnetic (TE-TM) polarization conversion efficiency was achieved using only 8 mW of applied RF power in a 1550-nm filter of 1.8-nm optical bandwidth. A power handling capacity of almost 100 channels was demonstrated by driving these transducers with 760 mW of RF power. These devices suffer little performance degradation in terms of filter width and sidelobe spectrum.<>
Keywords :
acoustic waveguides; acousto-optical devices; integrated optics; lithium compounds; optical communication equipment; optical filters; LiNbO/sub 3/; applied radio frequency power; filter width; integrated acoustically tunable optical filters; narrow-width acoustic waveguides; optical bandwidth; performance degradation; power handling capacity; sidelobe spectrum; transverse electric-transverse magnetic polarization conversion efficiency; walkoff-compensated miniature interdigital transducers; Acoustic devices; Acoustic transducers; Acoustic waveguides; Acoustic waves; Magnetic separation; Optical coupling; Optical filters; Optical polarization; Optical waveguides; Radio frequency;
Journal_Title :
Photonics Technology Letters, IEEE
