Accession Number : ADP007420

Title :   Polarization-Independent Optical Waveguide Switch with Parabolic Potential Quantum Well,

Corporate Author : TOKYO UNIV (JAPAN)

Personal Author(s) : TADA, Kunio ; Nishimura, Shinji ; Chan, Yen C. ; Ishikawa, Takuya

Report Date : 22 MAY 1992

Pagination or Media Count : 5

Abstract : In a parabolic quantum well, the shift in the optical transition energy due to the quantum confined Stark effect is independent of the carrier effective mass. This fact enables us to realize polarization-independent waveguide optical switches. An absorption-type switch with GaAs/Alo.3Ga.0.7As equivalent parabolic quantum wells is fabricated with molecular beam epitaxy. Both transverse-electric and transverse-magnetic mode fights exhibit an on/off ratio of lO dB at an applied voltage of 3.5V at 844nm wavelength. To our knowledge, this is the first polarization-independent waveguide optical switch based on the electric-field-induced effect in the semiconductor quantum well.

Descriptors :   *OPTICAL WAVEGUIDES, *OPTICAL SWITCHING, *HETEROJUNCTIONS, ABSORPTION, ELECTRIC FIELDS, ENERGY, MASS, MOLECULAR BEAMS, POLARIZATION, RATIOS, SEMICONDUCTORS, STARK EFFECT, TRANSITIONS, TRANSVERSE, VOLTAGE, ELECTRONIC SWITCHES, QUANTUM ELECTRONICS, GALLIUM ARSENIDES, ALUMINUM GALLIUM ARSENIDES, EPITAXIAL GROWTH, JAPAN.

Subject Categories : Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE