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. 1982 Nov 1;7(11):546-8.
doi: 10.1364/ol.7.000546.

Electro-optic-waveguide frequency translator in LiNbO(3) fabricated by proton exchange

K K Wong, R M De La Rue, S Wright

Electro-optic-waveguide frequency translator in LiNbO(3) fabricated by proton exchange

K K Wong et al. Opt Lett. .

Abstract

An optical waveguide phase modulator has been fabricated on X-cut LiNbO(3) by using proton exchange in benzoic acid. The phase modulator was operated as a serrodyne optical-frequency translator with shifted-signal to imagesignal discrimination of 52 dB for a 4-MHz frequency shift. The amplitude of the sawtooth driving signal was 10 V peak to peak. Application of a de bias voltage of either polarity was found to cause a substantial reduction in transmitted-light intensity.

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