Abstract (EN):
A long-period grating written in the SMF-28 fiber was heat treated at 1000 degrees C for 15 days. The spectrum of the grating shifted to longer wavelengths and the amplitude of the cladding mode resonances decreased as a result of structural relaxation. The background loss increased considerably for time longer than 200 h, and this loss is caused by devitrification of the fiber.
Language:
English
Type (Professor's evaluation):
Scientific
No. of pages:
4