Probes and Accessories

At PIONIRS, we can provide all you need for quick and easy TD-NIRS measurement.

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 separation:    30 mm

Dimensions:   48 mm (W) x 20 mm (L) x 11.3 mm (H)

Flexibility2:   Medium

Fiber Connectors:   2x FC/PC (wide key) 2.2 mm

Fiber Compatibility:   Any (depending on the fiber connector)

Fiber layout3:   Any (depending on the fiber connector)

 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 separation:    30 mm

Dimensions:   37.7 mm (W) x 28.5 mm (L) x 6.5 mm (H)

Flexibility2:   Medium or High, upon request 

Fiber Connectors :  Custom

Fiber Compatibility:   Only PIONIRS 1 mm core fibers

Fiber layout3:   Fixed – 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 Compatibility:   S1 (FC and SMA)

SD separation1:   Adaptable (20 to 30 mm)

Dimensions:   52 mm (W) x 19.5 mm (L) x 25 mm (H)

Fiber Layout:   parallel 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 Compatibility:   B5

SD separation1:   30 mm

Dimensions:   40.5 mm (W) x 31.5 mm (L) x 21 mm (H)

Fiber Layout:   parallel to measuring surface


Test Phantom:

A solid and dust-proof tissue mimiking phantom, to quickly asses NIRSBOX performances.

Optical parameters4μa = 0.1 cm-1, μ’s = 10 cm-1 

Dimensions461 mm (diameter) x 43 mm (height)

Core material: optically stable and durable epoxy resin

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.

4 Features customizable upon request.