LOW DRIVE-POWER INTEGRATED ACOUSTOOPTIC FILTER ON X-CUT Y-PROPAGATING LINBO3

We have fabricated very low power integrated acoustically tunable optical filters by employing walkoff-compensated miniature interdigital transducers, coupled to narrow-width acoustic waveguides. Nearly 100% 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.