FIBER-Series:
SWIR Digital Laser Vibrometers

For special measurement environments

The FIBER Series is a further development of the NOVA Series in which the compact optical head is connected via fibre optics with the measuring instrument. Separate fibres for measurement beam and the reflected signal ensure optimum signal quality.

Compact measuring heads not only make the system especially suited for measurements in confined spaces but also simplify the handling if the application requires frequent repositioning. Special heads are available for vacuum or climatic chambers as well as for extreme radiation conditions.

In multiplex operation, multiple measuring heads are connected to a single instrument via a high-speed fibre-optic switch. This enables the monitoring of multiple measuring points with one 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 10 MHz (Digital Real Time)
Vibrational velocities up to ±24,5 m/s
Displacement resolutions down to 50 Femtometer
Multiplex feature

Technical data

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 10 MHz
Max. vibrational velocity	24.5 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	5°C to 40°C

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 10 MHz and vibrational velocities up to 24.5 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.

Description	Decoder Name	Number of measuring ranges	Max. vibrational velocity	Frequency	Comments
Basis	D-VD-1N	8	5 m/s	DC - 500 kHz	required
	D-DD-1N	19			optional
	D-AD-1N	8			optional
Sense	D-VD-2N	11	5 m/s	DC - 1 MHz	required
	D-DD-2N	19			optional
	D-AD-2N	11			optional
Remote Sense	D-VD-2N-R	11	5 m/s	DC - 25 kHz	required
	D-DD-2N-R-I	19			optional
	D-AD-2N-R	11			optional
High Speed	D-VD-3N	11	24,5 m/s	DC - 2,5 MHz	required
	D-DD-3N	19			optional
	D-AD-3N	11			optional
Hochfrequenz	D-VD-4N	9	12 m/s	DC - 10 MHz	required
	D-DD-4N	19			optional
	D-AD-4N	11			optional
Master	D-VD-5N	14	24,5 m/s	DC- 10 MHz	required
	D-DD-5N	19			optional
	D-AD-5N	14			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.

Mini Fiber Head

- Dimension (D x L): 10 x 43 mm
- Fix working distance: 2, 4, 8, 10, 12 und 15 mm
- Focus spot size (typ.): 10 µm - 25 µm

Compact Fiber Head

- Dimension (L x B x H): 89 x 43.9 x 95 mm
- Fix working distances: 27, 37, 64, 89, 139, 189 mm
- Focus spot size (typ.):
17 µm at 27 mm
22 µm at 37 mm
33 µm at 64 mm
44 µm at 89 mm
66 µm at 139 mm
88 µm at 189 mm

Manual focus Fiber Head

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

Short-Range:
- Working distance: 50 mm ... 5 m
- Min. focus spot size (typ.): 50 µm bei 55 m

Mid-Range:
- Working distance: 150 mm ... 10 m
- Min. focus spot size (typ.): 60 µm bei 150 mm

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: 150 mm ... 10 m
- Min. focus spot size (typ.) 60 µm bei 150 mm

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: 500 mm ... 100 m
- Min. focus spot size(typ.): 170 µm bei 500 mm

Multiplex Faserköpfe

The OptoMET Dual Fiber SWIR Vibrometer consists of a SWIR vibrometer and a flexible Dual-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.