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The VFI Optical Fiber End-Face Interferometer

Brand:ArdenModel:VFI

The VFI is an interferometric inspection system specifically designed for checking the surface quality and flatness of your cleaved, polished or lensed fibers.

Products

The VFI interferometer has proved itself in Research, Production and QA over and over and the feedback we get from users indicates that they value these features -

1) Superb optical quality - the VFI will give you high quality images of the ends of optical fibers to enable you to estimate their quality and flatness. You can see for yourself some interferograms taken using the system. Click on the image to the right to see more pictures taken using the VFI. Using a front panel switch you can select the two modes of operation – inspect and fringe - so you can check the flatness and the end quality of your cleaved, polished or lensed fiber end with one fiber insertion. This means reduced testing time.

We pride ourselves on the crisp end-face images which show every defect and on the high contrast fringe patterns which make it easy to estimate end angles. The 5Mpixel camera in the VFI helps to show every detail and gives ample digital zoom capability. To see what we mean take a look here to see gallery of cleave images taken on the VFI.

2) Purpose designed fiber handling - the range and flexibility of the fiber handling is crucial to the concept of the VFI. Arden's own fiber holders make the VFI easy to use and accurate; our third party adaptor plates help you integrate VFI inspection and interferometery into your critical cleaving and polishing operations. Arden's holders can take fibers with diameters from 125µm to 1200µm, so you won't need multiple pieces of equipment to see all your fiber types properly.

3) Flexible software - the VFI comes with an efficient software package which enables you to grab, save, and print images. This gives you the ability to record vital data and produce QA reports for internal use or to supply to customers. The report generator enables users to include up to 20 cleave images in one report along with comments. Other features include - intensity line profile, intensity histogram, auto-optimisation of intensity, end angle estimation, psuedo-color rendering, review stored images.

All our software is written in-house by Arden's engineers. Arden has a track record of adding software features suggested by customers and we will continue to do that so you can be sure that our products will stay up-to-date with the latest standards and algorithms.


Features and benefits



  • Accepts 125 to 1200µm fiber diameters
  • 5Mpixel camera gives x6 digital zoom
  • Arden, Vytran, Fujikura and PK holders
  • End angle estimation
  • Inspect and Fringe modes
  • Flat and angled ends
  • User calibration facility



Applications



  • Precision cleaver manufacture
  • Cleaver maintenance
  • Laser manufacture
  • Medical device manufacturing
  • Fiber R&D
  • Development and testing of angled cleaves and cleavers
  • Device pigtailing




Technical Specification 

  VFI-1200 VFI-200
Field of View 1200 µm maximum with x1.5, x2, x3 and x6 digital zoom 200 µm
Dims (mm) 240W x 240D x 90H 240W x 240D x 90H
Weight (kg) 2.0 2.0
Power supply 12v in-line power supply 12v in-line power supply
PC connection Hi-Speed USB 2.0  USB 2.0
Resolution Maximum Resolution 1920x1920 pixels 1280 x 1024 pixels
Image format 8-bit JPG 8-bit JPG
Accuracy < 0.1 ° < 0.1 °
Connection to computer USB 2.0 (USB B to USB A: 2m cable supplied)

USB 2.0 (USB B to USB A: 2m cable supplied)

Computer requirements (minimum specification) 1.5GHz or higher processor, 1GB RAM ; USB 2.0 port - NOTE system will not work with USB 1.1 port 1.5GHz or higher processor, 1GB RAM ; USB 2.0 port - NOTE system will not work with USB 1.1 port
Operating systems supported Windows 7/8 32bit or 64bit, Windows XP SP3 Windows 7/8 32bit or 64bit, Windows XP SP3
Operating Temperature 0º - +50ºC 0º - +50ºC
Humidity 5%-95%, relative, non-condensing 5%-95%, relative, non-condensing

The VFI-1200 - Cleave inspection for fiber of 125 to 1200µm in diameter

The VFI-1200 will enable you to inspect fibers with diameters from 125µm to 1200µm.

The VFI-200

The VFI-200 performs much the same tasks as the VFI-1200 BUT it is optimised for the inspection of 125µm diameter fibers. If you only need to look at telecom type fibers this is the unit for you as it's high native resolution makes it the highest magnification interferometer around.

Fiber holders

Arden's own holders are designed for one job only - to accurately and conveniently hold fibers for interferometric end-face measurements. They hold the fiber close to the tip in a precision Vee-groove so there is no danger of fibers curling. The fiber is held gently but securely using a removable magnetic strip. Arden holders are machined from stainless steel so precisely that the VFI will hold it's calibration even when switching from holder to holder.

Other fiber holders

Whilst Arden's own holders are purpose-made for the job, we recognise that often the VFI is used in conjunction with specialist precision splicing and cleaving equipment. So by using adaptor plates the VFI can accommodate industry standard fiber holders from Vytran, Fujikura and Photon Kinetics.

Please note - using third party fiber holders can help your work flow BUT they are designed to work with cleavers and splicers not interferometers. Therefore you will not be able to self-calibrate the VFI using these holders. If you want to check the calibration of the VFI you will need to use Arden's own holders.

If you want to use the VFI with another type of holder please contact us as our engineers may well be able to help design an adaptor plate to suit your requirement.