Title :
An LiNbO3 integrated coherence modulator
Author :
Porte, Henri ; Goedgebuer, Jean-Pierre ; Ferriere, Richard
Author_Institution :
Opt. Lab., CNRS Univ. de France-Comte, Besancon, France
fDate :
6/1/1992 12:00:00 AM
Abstract :
The authors describe the principle of operation and the performance of a newly integrated LiNbO3 modulator specially designed to generate optical delays of several millimeters. This is achieved by using the simultaneous propagation of the TE and TM modes in a waveguide and by taking benefit of the high natural birefringence of LiNbO3. This modulator is well-suited to coherence modulation of light in fiber-optic transmissions. When powered by a short coherence source, the large optical delays induced by a cascade of such modulators can be used as information carriers to transmit several signals simultaneously. A demonstration is reported using a single source and two modulators in cascade to transmit signals simultaneously
Keywords :
birefringence; electro-optical devices; integrated optics; lithium compounds; optical communication equipment; optical modulation; optical waveguides; LiNbO3 integrated coherence modulator; TE modes; TM modes; coherence modulation; fiber-optic transmissions; information carriers; light modulation; natural birefringence; optical delays; short coherence source; simultaneous propagation; waveguide; Coherence; Delay; Integrated optics; Optical crosstalk; Optical fiber LAN; Optical fiber sensors; Optical interferometry; Optical modulation; Optical sensors; Optical waveguides;
Journal_Title :
Lightwave Technology, Journal of
