Miniature Fiber Optic Gyroscopes (FOG Sensors) & IMUs for UAVs & Robotics

Miniature Fiber Optic Gyroscopes (FOG Sensors) & IMUs for UAVs & Robotics
F13 Leiden Centre, Mosta Technopark, Mosta MST3000 MALTA Malta Regional offices
+ 356 21800 557

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.

Miniature FOG Gyros for UAVs

Our high-accuracy FOG sensors provide precision motion and orientation measurement in rugged, lightweight packages. Applications for UAVs include navigation systems, plus gimbal and image stabilization. Ideally suited to unmanned aerial and autonomous applications, Fizoptika fiber optic gyroscopes are used in autonomous aerial, robotic and agriculture systems.

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 gyroscopes are UNI EN ISO 9001:2015 certified.

Our miniature FOG 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.

Fizoptika has recently added a 3-axis fiber optic gyroscope (FOG) G181 and inertial measurement unit (IMU) U181 to its successful line of miniature FOG sensors. Both FOG-based systems inherit the most unique features of Fizoptika gyros – ultra-small lightweight design, high accuracy performance and minimal power consumption.

VG220 Series

Ultra-miniature UAV FOG Sensors

The VG221 is the first model in our new series of smallest-ever FOG sensors for UAVs and robotics. With high-accuracy performance and a compact and lightweight design, it measures just 33 mm in diameter and weighs only 17 grams.Fizoptika VG221 fiber optic gyroLike all Fizoptika gyroscopes, the ultra-miniature unit contains fully integrated optics and electronics.


(diameter x height mm)
33 x 12
Weight (gram) 17
Power (W) 0.5 @ 5V
Input Range (°/s) 300
Bias RMS (°/h) 3
ARW (°/√h) 0.02
Bandwidth (kHz) 1
Vibration (g, RMS) 12
Shock Resistance (g) 350
Operating Temperature(°C) -40 to +70
MTBF (years) 15
Housing Aluminium

Learn more: VG220 Series

VG1703 Series

Ultra-compact, lightweight UAV FOG sensors

VG1703 fiber optic gyro sensors

The VG1703 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 durable aluminium or hard plastic construction, the gyros are extremely resistant to shock and vibration, and exhibit a 15-year mean time before failure (MTBF).

VG1703 lightweight FOG SensorThe 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.

The VG1703 Series includes three variants of analogue fiber optic gyros, offering a series of options for construction, performance and durability.

VG1703 VG1703S VG1703SPE
(diameter x height mm)
40 x 19 40 x 12 40 x 12
Weight (gram) 35 20 18
Power (W) 0.5 0.5 0.25
Input Range (°/s) 130 160 300
Bias RMS (°/h) 1 1 1
ARW (°/√h) 0.008 0.01 0.025
Bandwidth (kHz) 1 1 1
Magnetic Response
3 3 3
Vibration (g, RMS) 30 12 12
Shock Resistance (g) 1200 350 350
Operating Temperature
-40 to +70 -40 to +70 -40 to +70
MTBF (years) 15 15 30
Housing Aluminium Aluminium Aluminium & plastic

Learn more: VG1703 Series

VG091 Series

Compact rugged FOG sensor for UAVCompact, rugged FOG for UAVs

The VG091 Series of miniature fiber optic gyroscopes features cylinder-shaped lightweight and rugged aluminium alloy construction that makes it an ideal solution for space- and layout-limited UAVs and unmanned vehicles.

These thumb-sized gyro sensors combine instant start-up and low power consumption, and boast a 15-year lifetime.

The VG091 Series includes four variants of fiber optic gyros:

VG091A VG091A-4LN VG191A VG191AD
(diameter x height mm)
24 x 52 24 x 52 24 x 40 24 x 48
Weight (gram) 30 50 30 (40 for shielded) 30 (45 for shielded)
Power (W) 0.5 0.5 0.5 0.5
Input Range (°/s) 300 60 250 300
Bias RMS (°/h) 3 1 1 1
ARW (°/√h) 0.04 0.01 0.015 0.012
Bandwidth (kHz) 1 1 1 1
Data rate (kHz) 8
Baud rate (kBd) 921
Magnetic Response
3 0.03 4 (0.1 for shielded) 3 (0.05 for shielded)
Vibration (g, RMS) 18 18 18 18
Shock Resistance (g) 750 350 750 750
Operating Temperatures
-40 to +70 -40 to +70 -40 to +70 -40 to +70
MTBF (years) 15 15 15 15
Housing Aluminium μ-metal Aluminium or μ-metal Aluminium or μ-metal

VG191A – smallest ever differential-output FOG sensor for UAVs

VG191A – Differential-output FOG sensor

The VG191A is our smallest ever cylinder-shaped fiber optic gyroscope, enclosed in a rugged aluminium alloy or μ-metal package which is only 24mm in diameter, 40mm in length and weighing just 30 grams (40 grams for shielded one).

With a 15-year lifetime and enhanced resistance to shock, vibration and temperature, the miniature FOG is ideal for demanding UAV and unmanned systems requirements. The shielded model also exhibits an ultimate magnetic immunity.

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

VG191AD – compact digital FOG for UAVs

VG191AD – compact digital FOG sensor for UAVs

The VG191AD is a compact digital FOG sensor that 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.

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.

Learn more: VG091 Series

VG103S Series

Ultra-compact gyros for UAVs

The VG103S series features an ultra-compact design that provides high-levels of resistance to shock and vibration. Optional magnetic shields are available for all models.

The high-performance gyros are ideal for a range of UAV and robotics applications, including flight control and antenna and platform stabilization.

The VG103S Series includes five variants of fiber optic gyros – there are models with analog output (VG103S, VG103SE and VG2103S) and digital output (VG103SD and VG103S-2LND).

fiber optic gyro VG103S

fiber optic gyro series VG103S

VG103S VG103SE VG103SD VG103S-2LND VG2103S
(diameter x height mm)
55 x 17 55 x 17 55 x 17 55 x 17 55 x 17
(without flanges)
Weight (gram) 40 40 40 40 70
Power (W) 0.5 @ 5V 0.5 @ 5V 0.5 @ 5V 0.5 @ 5V 0.5 @ 5V
Input Range (°/s) 400 400 450 200 350
Bias RMS (°/h) 1 1 1 1 1
ARW (°/√h) 0.02 0.02 0.015 0.007 0.02
Bandwidth (kHz) 1 1 1 1 1
Data rate (kHz) 8 8
Baud rate (kBd) 921 921
Vibration (g, RMS) 30 18 18 18 18
Shock Resistance (g) 1200
(3000 optional)
750 350 350 1200
Operating Temperature (°C) -40 to +70 -40 to +70 -40 to +70 -40 to +70 -40 to +70
MTBF (years) 15 10 15 15 15
Housing Plastic Plastic Plastic Plastic Aluminium alloy

Learn more: VG103S Series

VG103 Series

Lightweight fully-plastic FOG sensors

Lightweight fully-plastic FOG sensorThe VG103 series of FOG sensors features a rugged construction with no metal parts and excellent shock and vibration tolerance. The cost-effective, high-performance sensors offer a choice of differential and digital outputs, and are ideal for a range of UAV applications including imaging system and antenna stabilization.

Lightweight fully-plastic FOG sensorsThe VG103LN and VG103LND models feature low-noise performance, and the VG103E is an economy version of the VG103PT.


VG103PT VG103E VG103LN VG103D VG103LND
(diameter x height mm)
60 x 22 60 x 22 60 x 22 60 x 22 60 x 22
Weight (gram) 60 60 60 60 60
Power (W) 0.5W 0.5W 0.5W 0.8W 0.8W
Input Range (°/s) 350 350 170 350 170
Bias RMS (°/h) 1 1 1 1 1
ARW (°/√h) 0.02 0.02 0.01 0.02 0.01
Bandwidth (kHz) 1 1 1 0.3 (RS-232)
1 (RS-422)
0.3 (RS-232)
1 (RS-422)
Data rate (kHz) 1.2 / 4.8 1.2 / 4.8
Baud rate (kBd) 115 / 921 115 / 921
Vibration (g, RMS) 18 18 18 12 12
Shock Resistance (g) 750 750 350 350 350
Operating Temperature (°C) -40 to +70 -40 to +70 -40 to +70 -40 to +70 -40 to +70
MTBF (years) 15 10 15 15 15
Housing Plastic Plastic Plastic Plastic Plastic

Learn more: VG103 Series

G181 Fiber Optic Gyro

3-axis FOG sensor for UAVs and drones

G181 Fiber Optic GyroThe G181 is a high-accuracy, low-noise fiber optic gyro unit that consists of three gyro sensors mounted on a solid frame, as well as a fully-integrated ADC board.

The ultra-lightweight gyro features low power consumption and is available in aluminium or μ-metal housing. It is ideal for a variety of low-SWaP UAV and drone applications, such as gimbal and camera stabilization.

Dimensions (diameter x height mm) 46 x 111
Weight (gram) 160 (aluminium) / 250 (μ-metal)
Power (W) 2W @ 5V
Input Range (°/s) 300
Bias RMS (°/h) 1
ARW (°/√h) 0.015
Bandwidth (kHz) 0.7 (0.15 with 115 kBd option)
Operating Temperature (°C) -40 to +70
MTBF (years) 15

U181 Inertial Measurement Unit


U181 FOG-based UAV IMUThe U181 is a highly compact low-power IMU that combines three gyros, three MEMS accelerometers and a processing board to provide low noise performance with almost instant initialization.

The ultra-lightweight IMU is available in aluminium or μ-metal housing and is ideal for industrial-grade inertial navigation systems and UAV flight control applications.

Dimensions (diameter x height mm) 46 x 111
Weight (gram) 200 (aluminium) / 285 (μ-metal)
Power (W) 1.5W @ 5V
Input Range (°/s) 300
Bias RMS (°/h) 1
ARW (°/√h) 0.025
Bandwidth (kHz) 1
Operating Temperature (°C) -40 to +70
MTBF (years) 5
U181 Inertial Measurement Unit
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