Accession Number : ADP008210

Title :   Laser-Fabricated Electro-Optical Modulators in GaAs,

Corporate Author : COLUMBIA UNIV NEW YORK MICROELECTRONICS SCIENCE LAB

Personal Author(s) : Eldada, L. ; Ruberto, M. N. ; Scarmozzino, R. ; Levy, M. ; Scelsi, G.

Report Date : APR 1992

Pagination or Media Count : 2

Abstract : High-speed external modulators are necessary components for impressing signals onto lightwave carriers used in optical fibers for various transmission applications in telecommunications. III-V semiconductor waveguide electro-optic modulators offer the advantage of monolithic integration, which gives them an edge over lithium niobate modulators. We have used novel laser direct-writing techniques to masklessly define waveguide and electrode structures, and have fabricated an electro-optic polarization modulator in GaAs/AlGaAs. Our modulator exhibits a high extinction ratio and low value of Vpi.

Descriptors :   *FIBER OPTICS, *LIGHT MODULATORS, ALUMINUM GALLIUM ARSENIDES, ELECTRODES, EXTINCTION, GALLIUM ARSENIDES, INTEGRATION, LASERS, LITHIUM NIOBATES, OPTICS, POLARIZATION, SEMICONDUCTORS, OPTICAL WAVEGUIDES, ELECTROOPTICS.

Subject Categories : Electrooptical and Optoelectronic Devices
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE