Measurement of low frequency electric field using Ti: LiNbO3 optical modulator

Y. K. Choi, M. Sanagi, M. Nakajima

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


The use of an asymmetric Mach-Zender interferometric amplitude modulator to measure a relatively low frequency electric field strength is described. The sensitiviy of an electric field sensor using a Ti: LiNbO3 optical modulator is strongly affected by the shape of a electrode (probe antenna). To measure the low frequency electric field, a probe antenna of wide effective area is more useful than the usual dipole antenna. As proof of this, the optical modulator was fabricated with a plate-type probe antenna and the usefulness of this antenna tested for measuring low frequency electric field strength.

Original languageEnglish
Pages (from-to)137-140
Number of pages4
JournalIEE proceedings. Part J, Optoelectronics
Issue number2
Publication statusPublished - Jan 1 1993
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)


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