Probes and Accessories

Probes and Accessories

At pioNIRS, we can provide all you need for quick and easy TD-NIRS measurements!

Our probes are fiber-based and are equipped with their specific IRFbox to enable fast and easy Instrument Response Function acquisition for more accurate measurements.

All accessories are designed by our engineers to make your measurement as simple and fast as possible.

S (standard) and B (body) optode families, provide a 90° bend to the laser beam ensuring compact optical probes, while keeping high transmission efficiency.

S1-FC probe:

The S1-FC optode is an easy-to-use fiber replaceable solution, optimal for measurement on semi-planar surfaces like muscles and other biological media. Compact, lightweight and durable. (Also available with SMA fiber connectors).

SD separation130 mm
Dimensions48 mm (W) x 20 mm (L) x 11.3 mm (H)
Flexibility2Medium
Fiber Connectors2x FC/PC (wide key) 2.2 mm
Fiber CompatibilityAny (depending on the fiber connector)
Fiber layout3Removable – parallel to measuring surface

B5 probe:

The B5 optode is our first choice plug-and-play solution, optimal for in vivo measurements during the most extreme tasks.  It is the most compact pioNIRS probe < 7 mm thickness.

SD separation130 mm
Dimensions37.7 mm (W) x 28.5 mm (L) x 6.5 mm (H)
Flexibility2Medium or High, upon request
Fiber ConnectorsCustom
Fiber CompatibilityOnly pioNIRS’ 1 mm core fibers
Fiber layout3Fixed – parallel to measuring surface

IRFbox – S1:

Plug and play solution to get the instrument response function (IRF) of your device. This product is compatible with all probes from pioNIRS S1 family.

Probe CompatibilityS1 (FC and SMA)
SD separation1Adaptable (20 to 30 mm)
Dimensions52 mm (W) x 19.5 mm (L) x 25 mm (H)
Fiber layout2Parallel to measuring surface

IRFbox – B5:

The fastest way to acquire the instrument response function (IRF) of your device. This product is compatible with all probes from pioNIRS B5 family.

Probe CompatibilityB5
SD separation130 mm
Dimensions40.5 mm (W) x 31.5 mm (L) x 21 mm (H)
Fiber layout2Perpendicular to measuring surface

Probe customization:

Our probes can also be customized and tailored to your specific needs.

Don’t esitate to contact our team to discuss about the best solution for you.




1 Source – Detection (SD) separation (distance) is the mean distance between the injection point and the detection location.
2 Flexibility: internal flexibility scale: Rigid – Medium – High
3 Fiber layout can be either removable (fiber can be removed and replaced) or fixed (unremovable fibers). The probe injection geometry can be parallel or perpendicular to the measuring surface.