ODiSI 7100

Name: ODiSI 7100
Brand: Luna
SKU: 17905

An OFDR interrogator for distributed strain and temperature sensing — thousands of measurement points per meter of fiber, with spatial resolution below 0.65 mm and a range of ±15,000 µε. Up to 8 channels, for advanced materials, FEA model validation, and monitoring of critical structures.

Luna · Optical Distributed Sensing

ODiSI 7100

Turn a single optical fiber into thousands of sensors. Distributed strain and temperature sensing with sub-millimeter spatial resolution — in real time.

OFDR · technology resolution <0.65 mm up to 8 channels passive · dielectric

Luna ODiSI 7100 – OFDR interrogator for distributed strain and temperature sensing

1538

measurement points / meter

±15 tys.

strain range [µε]

20–100 m

sensor length / channeldepending on configuration and operating mode

8×

channels in a single system

Rising load — who detects the crack?

The same beam with a hidden crack at 6.2 m. The load rises — compare what 4 point strain gauges show versus the continuous ODiSI 7100 profile.

ODiSI 7100

A sharp peak of ~2080 µε exactly at the crack location — detected early, localized to the centimeter.

Point strain gauges

Max ~347 µε — "within range". The peak falls between the sensors and is missed.

Applications

Where every millimeter counts — new materials, critical structures, and industrial processes.

Composites and new materials

Strain characterization in complex, lightweight structures.

FEA model validation

2D/3D strain-field measurement to verify simulations.

Crack detection

Detection of micro-cracks and defects in critical structures.

Temperature profile

Continuous in-situ temperature measurement for process optimization.

Multi-material joints

Assessment of the bonding of different materials and multi-material joints.

"Smart parts"

Fibers embedded in the material — thousands of sensors in a finished part.

Why ODiSI

✓

Passive and dielectric — no sensor power supply, resistant to electromagnetic interference and corrosion.

✓

Reaches where others cannot — into bends, corners, embedded in the material.

✓

Real-time, multi-channel — each channel up to 100 m of sensing fiber.

✓

No drift or recalibration — long service life, no cycle counting.

✓

Flexible, low-profile — bonded to sharply curved surfaces.

✓

Fast installation — short time to first measurement.

Specification

Number of channels in the system	up to 8
Max. sensor length / channel	20 m (standard) · 100 m (extended)
Gage pitch (point spacing)	0.65 mm (1538/m) · 2.6 mm for 100 m
Strain measurement range	±15,000 µε
Max. standoff cable length / channel	up to 200 m
Data interface	Ethernet