Hybrid glass substrates for waveguide device manufacture

Hybrid glass substrates were prepared by a novel, low-temperature process joining active (Er-Yb codoped) and passive phosphate glass. The resulting hybrid substrates are chemically and physically robust; they can be cut, ground, and polished by conventional, water-based techniques. The entire substr...

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Bibliographic Details
Published in:Optics letters 2001-04, Vol.26 (8), p.509-511
Main Authors: Conzone, S D, Hayden, J S, Funk, D S, Roshko, A, Veasey, D L
Format: Article
Language:English
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Summary:Hybrid glass substrates were prepared by a novel, low-temperature process joining active (Er-Yb codoped) and passive phosphate glass. The resulting hybrid substrates are chemically and physically robust; they can be cut, ground, and polished by conventional, water-based techniques. The entire substrate can be immersed in a molten-salt bath to produce waveguides simultaneously in the active and passive regions. A low reflectance of -34+/-2 dB was measured at the joint interface with 1531.2-nm light by optical low-coherence reflectometry. Further, a hybrid laser waveguide device exhibited a slope efficiency of 33% at 1540 nm when pumped at 975 nm.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.26.000509