The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The near infrared luminescence is increased in H2-loaded Bi-Al co-doped optical fibers by irradiation of cw 244-nm or pulsed 193-nm laser light. The dose dependence is different for the two lasers.
Refractive index changes up to 2.5 × 10-3 were demonstrated in H2-loaded germanium free Bi-Al-doped silica fibers using both ArF excimer and cw-Ar+-244 nm lasers. Tensile stress changes indicate clear contribution of compaction to the total index change.
We report on mode field diameter changes of -231% due to UV-induced core refractive index changes of ≤10-2 in SMF-28e leading to a loss reduction of 0.83 dB between SMF-28e and a dispersion compensating fiber.
Bragg gratings with reflectivity >;93% were fabricated in Bi-Al co-doped H2-loaded optical fibers. Average index changes as high as +2.5×10-3 were obtained. Positive core stress changes indicate a compaction contribution to the total index change.
The formation of short Bragg gratings in SMF-28e non-hydrogen loaded pristine fibre using a CW Ar+ laser operating at 244 nm is reported. Mean refractive index changes 10-3 were obtained for a laser intensity of about 513 W/cm2 and a total dose of ~5.9~MJ/cm2. Strong stress changes indicate a contribution of compaction to the refractive index change.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.