Effect Of Hydrogen Treatment On Radiation Hardness Of Optical Fibers

T. Wei; M. P. Singh; W. J. Miniscalco; J. A. Wall

doi:10.1117/12.937625

4 February 1987 Effect Of Hydrogen Treatment On Radiation Hardness Of Optical Fibers

T. Wei, M. P. Singh, W. J. Miniscalco, J. A. Wall

Proceedings Volume 0721, Fiber Optics in Adverse Environments III; (1987) https://doi.org/10.1117/12.937625
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

Abstract

We have treated optical fibers in different hydrogen environments to examine the effect of hydrogen treatment on radiation hardness of optical fibers. Both radiation-induced loss and hydrogen-induced loss are related to defect center formation in optical fibers. We have investigated the effects of treatment conditions on defects produced by drawing and 7-irradiation using the techniques of spectral attenuation, Raman scattering, and photoluminescence. Using Ge/P-codoped multimode optical fibers, we observed considerable reduction in the radiation-induced absorption at long wavelengths (X > 1µm) for hydrogen-treated fibers. Post-treatment of irradiated fibers by hydrogen can also reduce existing radiation-induced absorption significantly and increase the hardness of the fibers under sub-sequent irradiation. For Ge /F-codoped multimode fibers, hydrogen treatment has also shown its effectiveness in enhancing radiation hardness. The pretreated fibers show s5.15 % improvement at 850 nm in radiation resistance over untreated fibers. Varying the hydrogen treatment and irradiation history of the fiber had little effect upon the Raman spectrum. However, significant trends were found in the behavior of the photoluminescence. Emission bands in the 600-900 nm spectral region have been found to have intensities which depend upon fiber history. We attribute the improvement in radiation resistance to the passivation of precursors or defects in the optical fiber. Treatment with hydrogen converts certain types of defects into types which do not form deleterious color centers after irradiation. This defect-conversion interpretation is supported by the photoluminescence measurements which reveal variations in color center concentrations with hydrogen treatment, y-irradiation, and optical excitation.

Citation Download Citation

T. Wei, M. P. Singh, W. J. Miniscalco, and J. A. Wall "Effect Of Hydrogen Treatment On Radiation Hardness Of Optical Fibers", Proc. SPIE 0721, Fiber Optics in Adverse Environments III, (4 February 1987); https://doi.org/10.1117/12.937625

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available