Brimrose’s Fiber-coupled, Acousto-Optic Frequency Shifters are used to shift the frequency of various optical signals. Due to a Doppler Shift, the frequency of the diffracted first order optical beam in the AO modulator or AO frequency shifter is shifted in frequency (wavelength) by the acoustic carrier frequency (wavelength).
If the incident acoustic wave is introduced in the direction of the incident optical wave, the laser frequency shifts towards the higher side.
If the incident acoustic wave is introduced in the opposite direction of the incident optical wave, the laser shifts toward the lower frequency side. The typical 3 dB spectral range of an AO frequency shifter device is ~60-120 nm and the 3 dB frequency shift range is ~10% of the center frequency. For wide bandwidth applications, Brimrose developed an fiber-coupled, AO frequency shifter with an extended frequency shift range of up to 100 MHz. The Brimrose fiber-coupled AO frequency shifter includes customized fiber lengths of up to six inches.
For more detailed product information including the technical specification and driver information, please view the Fiber-coupled AO frequency shifter brochure.
- Low Insertion Loss
- Broad Wavelength Range
- Low Power Consumption
- Good Temperature Stability and Reliability
- Hermetically Sealed
- Custom Configurations Available
- Fiber Sensing
- Heterodyne Detection
- Interferometric Fiber Sensor Systems
- Laser Doppler Configurations
- OEM Designs