The acousto-optic effect describes the interaction between sound and light. The understanding of the physical principles governing this phenomenon can be used as an alternative to conventional acoustic measurement methods. 

To find the Acousto-optic Devices which meet your requirements, you need to compare the devices specs. Here are some manufacturers of acousto-optic devices. 

Panasonic: Acousto-Optic Light Modulators ,Acousto-Optic Light Deflectors, Acousto-Optic Tunable Filters ,Signal Processors .

There are two parts, the modulator and the driver in the AOM. You need to send us the requirements: Wavelength,Frequencycy,Fiber Type,Fiber Jacket on In&Out, Fiber Length. See more details here about BeamQ AOM

Here is a list for the sellers of Fiber-coupled Acousto-optical Modulators:

AMS Technologies is Europe’s leading solution provider and distributor for Optical, Power and Thermal Management Technologies. An acousto optic modulator (AOM) can be used to slowly or rapidly modulate the intensity of a laser beam .

The EM4 Fiber Coupled Acousto-Optic Modulator product range comprises a series of rugged, hermetic modules that have been designed and built using technologies and processes developed for high reliability defense and telecommunications applications.

Fiber-coupled Acousto-Optic Modulators from Korea company l2k .

Here are other applications for Acousto-Optic Devices :
Spectrum Analysis Using Acousto-Optic Devices. 
Acousto Optics in True Confocal Spectral Microscope Systems.

Lamb waves acousto-optic modulator in ZnO/MgO multiple quantum wells and comparison with a classical modulator.