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Fiber-coupled Acousto-Optic Frequency Shifters

Brimrose’s Fiber-coupled, Acousto-Optic Frequency Shifter Systems are used to shift the frequency of various optical signals.

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Overview

Brimrose’s Fiber-coupled, Acousto-Optic Frequency Shifter Systems 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 AOFS 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 AOFS with an extended frequency shift range of up to 100 MHz.

 

Key Features

  • Low Insertion Loss
  • Broad Wavelength Range
  • Low Power Consumption
  • Hermetically Sealed
  • Low RF Drive Power
  • Stable Performance
  • Good Temperature Stability and Reliability
  • Custom Configurations Available
 

Applications

  • Fiber Sensing
  • Heterodyne Detection
  • Interferometric Fiber Sensor Systems
  • Laser Doppler Configurations
  • OEM Designs
 

Technical Specifications

Model # Wavelength XX (nm) Insertion Loss (dB) Frequency Shift (MHz) Fiber Type
TEF-125-XX-2FP 360-1600 2.5-4.0 +125 or -125 SM or SMPM
TEF-200-XX-2FP 360-1600 2.5-4.0 +200 or -200
TEF-300-XX-2FP 360-1600 3.0-5.0 +300 or -300
TEF-1000-XX-2FP 360-1600 8.0-12.0 +1000 or -1000
IPF-200-XX-2FP 980-2000 2.3-5.0 +200 or -200 SMPM
IPF-500-XX-3FP 980-2000 2.3-6.0 +500 or -500
IPF-1000-XX-3FP 980-2000 8.0-11.0 +1000 or -1000
IPF-1500-XX-3FP 980-2000 9.0-12.0 +1500 or -1500
AMF-25-XX-2FP 980-2900 2.0-2.2 +25 or -25 SM or SMPM
AMF-55-XX-2FP 980-2900 2.0-2.2 +55 or -55
AMF-100-XX-3FP 980-2900 2.1-3.3 +100 or -100
AMF-150-XX-3FP 980-2900 2.1-3.9 +150 or -150
IPF-200-100-XX-2FP 980-2000 6.0-8.0 +150 to +250 or –150 to –250 SMPM
IPF-300-100-XX-2FP 980-2000 6.0-8.0 +250 to +350 or –250 to –350
TEF-200-100-2FP 360-1000 6.0-8.0 +150 to +250 or –150 to –250 SM or SMPM

The Fiber-coupled Frequency Shifter models shown above represent some examples of our fabrication capabilities. In addition, other wavelengths, frequencies or configurations are available.