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High-Accuracy Miniature Fiber Optic Gyroscopes (FOG Sensors) for UAVs & Robotics

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Fizoptika is a leading developer of state-of-the-art ultra-miniature FOG (fiber optic gyroscope) technologies for UAVs (unmanned aerial vehicles), drones and robotics. 

Our high-accuracy FOG sensors provide precision motion and orientation measurement in rugged, lightweight packages.

Based on 40-micron polarization maintaining (PM) fibers, our UAV gyros are constructed using a sophisticated spliceless technology that fabricates the entire fiber optic assembly from a single fiber length. This jointless construction results in zero excess optical loss.

We pride ourselves on the reliability and superior quality of our designs and products, and all Fizoptika fiber optic gyros are UNI EN ISO 9001:2015 certified.

VG1703S Series Fiber Optic Gyroscopes

Ultra-compact, lightweight UAV FOG sensors

UAV Fiber Optic GyrosThe VG1703S series of FOG sensors features excellent bias and angle random walk in an extremely compact package that is ideal for SWaP (size, weight and power)-constrained UAVs and unmanned systems. With a durable aluminium and hard plastic construction, the gyros can withstand 1200g shocks, and exhibit a 10-year mean time before failure (MTBF).

The high-quality single mode fiber minimises optical loss and maintains optical guiding ability even under high degrees of elastic and plastic deformation. Precision fusion-tapering and soldering processes provide highly mechanically stable and temperature-stable components, with stringent test procedures maintaining quality at all stages of manufacture.

VG1703S series fiber optic gyros offer a variety of advantages for UAV and unmanned systems applications:

  • Fine-tuned assembly provides immunity to electromagnetic interference, eliminating the need for heavy shielding
  • Bias immunity to vibration and gravitational acceleration
  • No dead zones or hysteresis
  • Effectively instant response
  • No cross-axis sensitivity error.

VG1703SP FOG sensor

Fiber Optic Gyro VG1703SPE


The VG1703S fiber optic gyro is available in three variants, offering a series of options for construction, performance and durability.

Dimensions40 x 12 mm (diameter x height)
Weight20 g18 g18 g
Power0.5 W0.5 W0.25 W
Input Range160 °/s160 °/s300 °/s
Bias RMS1 °/h1 °/h3 °/hs
ARW0.01 °/√h0.01 °/√h0.025 °/√h
Bandwidth1 kHz1 kHz1 kHz
Operating Temperatures-40 to +70 °C-20 to +55 °C-40 to +70 °C
MTBF100,000 h100,000 h300,000 h

VG191A Digital Fiber Optic Gyroscope

Compact digital FOG sensor for UAVs

VG191AD Fiber Optic GyroscopeThe VG191A Digital is our smallest ever digital fiber optic gyroscope, with a compact, lightweight and rugged aluminium alloy construction that makes it an ideal solution for space- and layout-limited UAVs and unmanned vehicles. The gyro can withstand 350g shocks and features a 15-year lifetime.

The gyro’s sensing assembly is fabricated from a single 200m length of high-quality single mode optical fiber, using a precision fusion-tapering process. State-of-the-art polarization control technology provides the gyro with excellent minimum magnetic sensitivity.

The VG191AD uses a 24-bit ADC and powerful processor to provide precise digital output via RS422 at 8 kHz. The digital output contains raw angular rate data and gyro parameters, and can be factory-programmed to provide real-time compensated data.


Dimensions25 x 48 mm (diameter x height)
Weight30 g
Power0.7 W
Input Range300 °/s
Bias RMS1 °/h
ARW0.01 °/√h
Bandwidth1 kHz
Operating Temperatures-40 to +70 °C
MTBF100,000 h

VG191A Fiber Optic Gyroscope (FOG)

Smallest ever differential-output FOG sensor for UAVs

VG191A Fiber Optic Gyroscope (FOG)The VG191A is our smallest ever differential-output fiber optic gyroscope, enclosed in a rugged aluminium alloy package only 24mm in diameter, 40mm in length and weighing just 30 grams. With a 15-year lifetime and enhanced resistance to shock, vibration and temperature, the miniature FOG sensor is ideal for demanding UAV and unmanned systems requirements.

The compact, lightweight sensor delivers excellent performance with 0.015 deg/√h ARW (angle random walk) and a bias stability of 1 degree/hour.

Differential-output UAV FOG sensor


Dimensions25 x 40 mm (diameter x height)
Weight30 g
Power0.5 W
Input Range300 °/s
Bias RMS1 °/h
ARW0.015 °/√h
Bandwidth1 kHz
Operating Temperatures-40 to +70 °C
MTBF15 years
High-Accuracy Miniature Fiber Optic Gyroscopes (FOG Sensors) for UAVs & Robotics
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