Fiber-Series:
Digital Fiber-coupled SWIR Laser Vibrometer

The Optomet Fiber series is a further development of the Nova series, which combines the superior performance of SWIR (short-wavelength infrared) laser vibrometry with the flexibility of compact optical fiber-coupled heads.
The laser vibrometers are connected to the optical heads by glass fibers. Separate fibers for the outgoing measurement beam and the incoming reflected signal ensure optimal signal quality without mutual interference.

laser vibrometer long range measurement head

laser vibrometer long range measurement head backside

laser vibrometer measurement head drawing

laser vibrometer compact measurement head

laser vibrometer mini measurement head with camera and light

Challenging Environmental Conditions

The separation of the optical head from the vibrometer provides customers a flexible solution to challenging measurement environments and speciality applications without the need for separate vibrometers for each scenario.

Compact and Flexible Measurement Heads

Small and compact optical heads make the system suitable for measurements in confined spaces and simplify handling considerably, especially when the heads have to be repositioned frequently. Variants with a built-in camera make it easier to define the measuring point. Heads are available for long distances and tiny heads are offered for extremely confined spaces.

Measurements in Harsh Environments

Optomet offers specialized optical heads designed for vacuum or climatic chambers as well as for operation under ionizing radiation. Fiber-optic connections can easily span dozens of meters, making measurements possible even under the most adverse conditions without the vibrometer being exposed to harsh environments.

Several Heads on one Vibrometer

An optical switch enables the connection of several optical heads to one instrument in order to monitor several measuring points with a single vibrometer. The switch and the selection of the active channel are controlled via Ethernet.

Advantages of the SWIR Optomet Vibrometer

The Fiber series combines the advantages of the Nova series with compact measuring heads and, like the former, enables problem-free measurements even on black, glowing or extremely rough surfaces.

Like all Optomet vibrometers, the Fiber Series benefits from features like universal digital signal processing, real portability and intuitive hardware and software. More detail on these features can be found in the product-overview.

Characteristics - Fiber Series Laser Vibrometer

Compact, flexible und robust sensing head
Exzellent signal level
Cable length flexible 2, 5, 20... Meters
Ethernet-Digital-Output (1 GBit) und with remote feature
32 Bit Dynamik range for displacement measurements
Frequency bandwidths: DC to 25 MHz (Digital Real Time)
Vibrational velocities up to ±30 m/s
Displacement resolutions down to 50 Femtometer
Multiplex feature

Technical Specifications

A detailed list of all vibrometer characteristics, including all hardware and software features, can be found in the vibrometer data sheet in Support & Datasheets.

Category	Characteristics
Laser source	SWIR-Laser
Laser wavelength	Measurement laser: 1550 nm
	Targeting laser: 510-530 nm
Laser class	Measurement laser: output power: <10 mW, class 1
	Targeting laser: output power: <1 mW, class 2
Measured quantity	Velocity, Displacement, Acceleration
Frequency bandwidths	DC to 25 MHz
Max. vibrational velocity	25 m/s
Output signal (digital)	GBit-Ethernet (RJ45) / WiFi
Output signal (analogue)	3 x Standard BNC Buchse
Signal processing	Digital (Optomet UltraDSP)
User interface output	Color screen 3.5" + 20 segment LED bargraph
User interface input	Touch screen, knobs with push-button, key switch (power)
Dimensions	Length x width x height (excluding handle and lens): 380 x 180 x 148 mm
Weight	8 kg
Mounting	Standard tripod screw thread
Power supply	110 -240V AC (50-60Hz) oder 12V DC
Power consumption	27 Watt
Operating temperature range	0°C to 40°C

Laser Vibrometer Measuring- & Data Acquisition Software

Single Point Laser Vibrometer Analysis Software

OptoGUI Software

OptoGUI is an extensive and intuitive software for remote control, data acquisition, and data analysis when working in single-point mode. Data transfer is realized via a loss-free digital Gigabit Ethernet connection. Click for detailed information about OptoGUI.

Available Decoders

A wide variety of high-performance real-time decoders are available for the evaluation of the interferometric measuring signals. The Optomet UltraDSP technology enables the measurement of frequencies up to 25 MHz and vibrational velocities up to 25 m/s with the Fiber-Series, displacements can be resolved to less than 100 fm. All vibrometers incorporate a velocity decoder, and displacement and acceleration decoders are optionally available. Numerous measuring ranges per decoder ensure that measurements can always be performed with the optimum sensitivity.

Decoders can be easily retrofitted or upgraded. Start with a basic system and adapt the capabilities of the measuring instrument as required. This requires no return of the instrument to the factory and no waiting times for your production or research project. The table below provides an overview of the configuration options. We will also be happy to assist you in the selection of the best decoder for your measuring task.

Start

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-0N	7	2.5 m/s	DC - 100 kHz	required
Displacement Decoder D-DD-0N	19			optional
Acceleration Decoder D-AD-0N	7			optional

Basis

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-1N	8	5 m/s	DC - 500 kHz	required
Displacement Decoder D-DD-1N	19			optional
Acceleration Decoder D-AD-1N	8			optional

Sense

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-2N	11	5 m/s	DC - 1 MHz	required
Displacement Decoder D-DD-2N	19			optional
Acceleration Decoder D-AD-2N	11			optional

Sense Remote

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-2N-R	11	5 m/s	DC - 25 kHz	required
Displacement Decoder D-DD-2N-R	19			optional
Acceleration Decoder D-AD-2N-R	11			optional

Sense Speed

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-2N-12	12	12 m/s	DC - 1 MHz	required
Displacement Decoder D-DD-2N-12	19			optional
Acceleration Decoder D-AD-2N-12	12			optional

Speed

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-3N-12	9	12 m/s	DC - 2,5 MHz	required
Displacement Decoder D-DD-3N-12	19			optional
Acceleration Decoder D-AD-3N-12	9			optional

High Speed

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-3N	11	25 m/s	DC - 2,5 MHz	required
Displacement Decoder D-DD-3N	19			optional
Acceleration Decoder D-AD-3N	11			optional

Ultra High Speed

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-3N-30	12	30 m/s	DC - 2,5 MHz	required
Displacement Decoder D-DD-3N-30	19			optional
Acceleration Decoder D-AD-3N-30	12			optional

High Frequency

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-4N	9	12 m/s	DC - 10 MHz	required
Displacement Decoder D-DD-4N	19			optional
Acceleration Decoder D-AD-4N	11			optional

Master

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-5N	14	25 m/s	DC- 10 MHz	required
Displacement Decoder D-DD-5N	19			optional
Acceleration Decoder D-AD-5N	14			optional

Master+

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-5N-25	14	25 m/s	DC- 25 MHz	required
Displacement Decoder D-DD-5N-25	19			optional
Acceleration Decoder D-AD-5N-25	14			optional

Master++

Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Velocity Decoder D-VD-5N-30	15	30 m/s	DC- 25 MHz	required
Displacement Decoder D-DD-5N-30	19			optional
Acceleration Decoder D-AD-5N-30	15			optional

Available Fiber Heads

Several fiber heads are available which are optimized for the Fiber-Series. Choose the right optical system based on working distance, reflectivity of the surface to be measured, size of the focus point or measurement environment.

The table below provides an overview of the configuration options. We will also be happy to assist you in the selection of the best fiber head for your measuring task.

Laser Vibrometer Mini Fiber Measurement Head

Miniature Fiber Head with Camera

Dimension (D x L): 11 x 52 mm
Fix working distances: 4, 7 or 14 mm available
Optional Lens Kit: Includes three manually interchangeable lenses for all three working distances

Laser Vibrometer Compact Fiber Measurement Head

Compact Fiber Head

Dimension (L x B x H): 89 x 43.9 x 95 mm
Fixed working distance selectable: 25, 37, 64, 89, 139 or 189 mm
Focus spot size (typ.):

- 25 µm at 25 mm
- 29 µm at 37 mm
- 43 µm at 64 mm
- 61 µm at 89 mm
- 90 µm at 139 mm
- 118 µm at 189 mm

Laser Vibrometer Manual Focus Fiber Measurement Head

Manual Focus Fiber Head

Dimension (L x B x H): 157 x 43,9 x 95 mm
Manual focus
Short-Range Version:

-Working distance: 15 mm ... 5 m
-Min. focus spot size (typ.): 27 µm at 15 mm

Mid-Range Version:

-Working distance: 270 mm ... 10 m
-Min. focus spot size (typ.): 67 µm at 270 mm

Laser Vibrometer Autofocus Mid-Range Fiber Measurement Head

Autofocus Mid-Range Fiber Head

Dimension (L x B x H): 175,5 x 43,9 x 95 mm
Autofocus, remote focus, manual focus
Working distance: 135 mm ... 10 m
Min. focus spot size (typ.): 42 µm at 135 mm

Laser Vibrometer Autofocus Long-Range Fiber Measurement Head

Autofocus Long-Range Fiber Head

Dimension (L x B x H): 221 x 43,9 x 95 mm
Autofocus, remote focus, manual focus
Working distance: 450 mm ... 100 m
Min. focus spot size (typ.): 72 µm at 450 mm

Multiplex Fiberheads

The Optomet Fiber SWIR vibrometer consists of a SWIR vibrometer and a flexible fiber head. Using an additional fiber switch multiple fiber heads can be connected to the vibrometer, so you can multiplex many different channels (2, 4, 8, 16, ...), the fiber switch comes with an electrical interface (Ethernet, USB, TTL, ...) and can be remotely operated by a PC.