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Multistage etching process for microscopically smooth tellurite glass surfaces in optical fibers

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4 Author(s)
Zhang, Aidong ; Department of Physics and Center for Optical Technologies, Lehigh University, Bethlehem, Pennsylvania 18015 ; Aoxiang Lin ; Wang, Jau-Sheng ; Toulouse, J.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1116/1.3437017 

Bulk samples of tellurite glass with composition 75TeO2–20ZnO–5Na2O (TZN) were fabricated by melting and quenching techniques. In order to improve the surface quality of optical fiber preform made with this tellurite glass, the authors developed a multistage etching process. The relationship between successive etching treatments and roughness of the TZN glass surface was probed by using an atomic force microscope. The results demonstrate that this multistage etching method effectively improves this tellurite glass surface smoothness to a level comparable with that of a reference silica glass slide, and the corresponding chemical micromechanisms and fundamentals are discussed and confirmed by atomic force microscopy, potentially contributing to the development of multicomponent soft glass fibers and devices.

Published in:

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:28 ,  Issue: 4 )

Date of Publication:

Jul 2010

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