Hybrid glass substrates for waveguide device manufacture
Samuel D. Conzone, Joseph S. Hayden, David S. Funk, Alexana Roshko, D. L. Veasey
Hybrid glass substrates composed of active (ER/Yb co-doped) and passive phosphate glass were prepared by a novel, low temperature joining process. 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 simultaneously produce waveguides in the active and passive regions. A low reflectance of -35 + 2dB 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.
, Hayden, J.
, Funk, D.
, Roshko, A.
and Veasey, D.
Hybrid glass substrates for waveguide device manufacture, Optics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=14496
(Accessed December 7, 2023)