Improved optical switching extinction in three-electrode Ti:LiNbO 3 directional couplers

K. D. Choquette, L. McCaughan, Wiley K. Smith

Research output: Contribution to journalArticlepeer-review

Abstract

Utilizing three electrodes and three independent voltages in Ti:LiNbO 3 directional coupler optical switches, we have achieved significant improvements in switching extinction over the standard uniform Δβ configuration. The reductions in optical crosstalk vary from 3 to 24 dB for both switching states of several fabricated devices. We have observed a bar state extinction of -47.8 dB, which is the largest extinction ratio reported to date. We find that switching measurements are limited by the largest contrast ratio which can be obtained in the optical waveguides.

Original languageEnglish (US)
Pages (from-to)2097-2099
Number of pages3
JournalApplied Physics Letters
Volume51
Issue number25
DOIs
StatePublished - 1987
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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