Acousto-optic frequency shifters (AOFS) are compact devices designed specifically for this task. Depending on the selected Bragg angle, these devices will either up-shift or down-shift the laser light by the frequency of the applied RF signal.
BeamQ 1550nm Fiber-coupled Acousto-optic Modulator/Frequency Shifter AOFS
AOM frequency shifters are highly efficient acousto-optic devices, requiring very low drive power to achieve the desired frequency shift. The acousto-optic frequency shifter designs typically use the slow shear mode, resulting in slow rise time, but requiring minimal power consumption (typically < 100 mW power draw).
Acousto-optic modulators integrated on-chip
Acousto-optic devices that use radio frequency mechanical waves to manipulate light are critical components in many optical systems. Here, the researchers bring acousto-optic devices on-chip and make them more efficient for integrated photonic circuits.