Preform Polariscope POL
Polariscope is an essential tool in optical fiber preform production:
- it provides visual analysis of core preforms prior to sleeving, finished sleeved preforms or quartz tubes / rods.
- it helps detect bubbles, inclusions, cracks, strain regions and other defects in glass structure.
- defects are detected by inserting preform between two crossed polarization filters and placing the whole assembly in a white light beam.
- to help detect small point defects, preform is also illuminated longitudinally by a bright halogen light source.
Sturdy mechanical construction ensures proper preform fixing, preventing vibrations and damage, as well as touch-free handling.
Built-in magnifying lens and gradation on the guide rail enable exact positioning of defects relative to a chosen reference point, for future introduction into process database for reference after fiber is drawn.
