OFG / PLG - Optical fibers and fiber plug adapters
In order to connect the measurement head or optical probes to the spectrometer, we supply a range of optical fiber guides (OFG-xxx). These are not attached directly to the spectrometer, but instead to a fiber plug adapter (PLG-xxx) appropriate for each fiber type. The fiber plug adapter is then mounted on the spectrometer's entrance port. This innovative concept means that calibration of the spectrometer remains intact when changing the accessories attached.
Properties of the different fiber guides:
Type
Features
Advantages
Application
multimode fiber with SMA connector
multimode fiber with core diameter 200 - 1000 µm
superior light transmission for small beam diameters
collecting and transmitting collimated light
fiber bundle with ferrule
bundle of fibers each with core diameter of 50 µm
large cross sections possible; bending the fiber does not affect transmission
collecting and transmitting diffuse light
Ordering information for fiber guides:
Model
Diameter
Spectral range
Features
Multimode fiber with SMA connector
OFG-311 / -312 / -313
200 / 600 / 1000 μm
300 - 2200 nm
glass fiber
OFG-321 / -322 / -323
200 / 600 / 1000 μm
190 - 1350 nm
quartz glass fiber
OFG-352
400 μm
1000 - 6000 nm
chalcogenide fiber
Fiber bundle with SMA connector
OFG-343
1 mm
280 - 2500 nm
LIR fiber
Fiber bundle with ferrule
OFG-414 / -415
1.5 / 3 mm
380 - 1600 nm
glass fiber
OFG-424 / -425
1.5 / 3 mm
190 - 1350 nm
quartz glass fiber
OFG-444 / -445
1.5 / 3 mm
280 - 2500 nm
LIR fiber
OFG-464 / -465
1.5 / 3 mm
190 - 2500 nm
mixed fiber bundle
Bifurcated fiber bundle with ferrule; 2 arms combined to 2.1 mm Ø
OFG-524
1.5 mm
190 - 1350 nm
quartz glass fiber
OFG-554
1.5 mm
190 - 1600 nm
mixed fiber bundle
OFG-555
1.5 mm
190 - 2500 nm
mixed fiber bundle
Fiber bundle cross section conversion
OFG-625
3.6 mm
190 - 1350 nm
changes cross section to 2 x 5 mm
Giant supplies appropriate connector adapters for both multimode fibers and fiber bundles. Fiber plug adapters are also available for all popular connectors as used in optical telecommunications and fiber sensor applications.
The fiber plug adapter slides into the optical input of the spectrometer and is fixed with the knurled ring. An alignment pin guarantees accurate and reproducible installation. Furthermore, the fiber plug adapter ensures efficient coupling of the light into the spectrometer due to the integrated lens that matches the fiber NA (numerical aperture) to the f-number of the spectrometer.
Ordering information for fiber plug adapter PLG:
SMA connector
Fiber bundle ferrule
Spectral range
Transmission
PLG-310
PLG-410
300 - 2200 nm
optimized for VIS
PLG-320
PLG-420
190 - 3200 nm
optimized for UV
PLG-340
PLG-440
190 - 3200 nm
optimized for IR
PLG-350
n/a
1000 - 5000 nm
optimized for IR
Additionally, the PLG adapters of the type PLG-53x are compatible with the connectors popular in optical telecommunications: FC/PC, ST, DIN, Radiall, Diamond.
