Abstract

Using high-intensity (110-200 GW/cm2) 250-fs 211-nm laser pulses and a point-by-point technique, the efficiency of long-period grating inscription in H2-loaded standard telecom Corning SMF-28 and H2-free photosensitive B-codoped Fibercore fibers was studied and compared with those at other existing recording methods (low-intensity 157-nm, 193-nm, 248-nm or high-intensity 264-nm fabrications). It was shown that at high-intensity 211-nm laser inscription, two-quantum photoreactions are responsible for long-period fiber grating (LPFG) formation, which results in a significant photosensitivity enhancement in comparison with conventional low-intensity 248-nm exposure (by 45 times for SMF-28 fiber). It was found that the grating strength in the case of SMF-28 fiber, irradiated with high-intensity 211-nm pulses, reaches 28 dB, which is the highest value among all known photochemical approaches. The thermal studies of the recorded gratings were also conducted.

© 2005 IEEE

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription