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It is present da general discussion about acousto-optic and electro-optic interferometric system for RF phase control. After point out the most important problems of such systems it is presented the one arm interferometer based on a collinear acousto-optic modulator and an electro-optic modulator. This proposed setup is compared with the two arms interferometers and its characteristics as insertion loss and bandwidth are discussed.© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

After analyzing the combination of the acousto- and electro-optic effects, two applications are presented. The first is the use of that combination to reduce the tilt sensibility of the acousto- optic devices. The second is related to an interaction configuration that is appropriated to wideband spectrometers.© (1995) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

After point out the principles of the acousto-optic spectrometer (AOS) some questions about channels number and the AOS measurements uncertainties are discussed. To overcome the limits imposed by the acoustic attenuation and velocity one low cost LiNbO3 acousto-electro-optic interaction configuration with high channels number possibilities is proposed. Taking the turbulence and temperature effects on measurements uncertainties together it was established a criteria to use the spectroemter during for radio astronomy observations with lower uncertainties and costs.