IMPROVED LONG-TERM DC DRIFT IN OH-REDUCED LITHIUM-NIOBATE OPTICAL-INTENSITY MODULATORS

Authors
NAGATA H ICHIKAWA J MITSUGI N SAKAMOTO T SHINRIKI T HONDA H KOBAYASHI M
Citation
H. Nagata et al., IMPROVED LONG-TERM DC DRIFT IN OH-REDUCED LITHIUM-NIOBATE OPTICAL-INTENSITY MODULATORS, Applied optics, 35(34), 1996, pp. 6828-6830
Citations number
4
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
35
Issue
34
Year of publication
1996
Pages
6828 - 6830
Database
ISI
SICI code
0003-6935(1996)35:34<6828:ILDDIO>2.0.ZU;2-#
Abstract
Long-term de drift of lithium niobate optical intensity modulators is successfully reduced by exclusion of OH- ions from the lithium niobate substrate. In this regard, the titanium-indiffused waveguide is prepa red on a commercial OH-free substrate under a dry gas atmosphere. The dc drift measured for these hermetically sealed modulators indicates a possibility for continuous operation over 20 years at 50 degrees C.