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.