Soft-glass fiber preform thumbnail
Soft-glass fiber preform

Top view of a soft-glass fiber preform while it is inside the furnace of a brand new 6-meter fiber fabrication draw tower facility (at DTU Fotonik) at around 1000 degrees Celsius. [Honorable mention 2017 After Image photo contest.] 

—Christos Markos, DTU fotonik, Technical University of Denmark