Title :
A DC to multigigabit/s polarization-independent modulator based on a Sagnac interferometer
Author :
Fang, Xiaojun ; Ji, Helin ; Pelz, Lawrence J. ; Demarest, Kenneth R. ; Allen, Christopher
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Kansas Univ., Lawrence, KS, USA
fDate :
11/1/1997 12:00:00 AM
Abstract :
A broadband, electrically controlled polarization-independent intensity modulator (PLM) based on a Sagnac interferometer is presented. Influences from asymmetric modulation and traveling wave effects are analyzed and methods to eliminate these effects are proposed. Compared to Mach-Zehnder interferometer-based modulators, this modulator is independent of the input polarization state and less sensitive to ambient perturbations due to its reciprocity property. A prototype modulator operating at 1 and 2.488 Gb/s modulation rates is demonstrated
Keywords :
electro-optical modulation; electroabsorption; fibre optic sensors; light interferometers; light polarisation; optical communication equipment; optical fibre couplers; 1 Gbit/s; 2.488 Gbit/s; Mach-Zehnder interferometer-based modulators; Sagnac interferometer; ambient perturbations; asymmetric modulation; broadband electrically controlled polarization-independent intensity modulator; input polarization state; less sensitive; modulation rates; multigigabit/s polarization-independent modulator; reciprocity property; traveling wave effects; High speed optical techniques; Intensity modulation; Optical control; Optical fiber polarization; Optical interferometry; Optical modulation; Optical polarization; Optical sensors; Optical transmitters; Sagnac interferometers;
Journal_Title :
Lightwave Technology, Journal of
