Mendes Pacheco, G.Salvi Sakamoto, J. M.Kitano, C. [UNESP]2022-04-282022-04-282015-01-01Acta Physica Polonica A, v. 127, n. 1, p. 25-28, 2015.1898-794X0587-4246http://hdl.handle.net/11449/220298We present here some results of our research related to the optoelectronics and photonics and show all the experimental setups used. Starting with a discussion on the importance of the waves, we demonstrate our achievements based on employment of acoustic, optical, and microwaves and their technological use. The results concern the acousto-optic and electro-optic effects. The generalized analysis of the electro-optic effect reveals a new high induced birefringence in lithium niobate. A patented optical fiber microphone is presented, and its applications to the measurements of acoustic wave velocity in gases and in the laser ultrasound non-destructive evaluation system are discussed. Finally, the generation of microwaves by an optical method with substantial cost reduction is presented.25-28engArtigo10.12693/APhysPolA.127.252-s2.0-84921975046