Optical waveguides – With optical coupler – Particular coupling structure
Patent
1990-12-03
1991-12-17
Mintel, William
Optical waveguides
With optical coupler
Particular coupling structure
357 19, 357 16, 357 4, 357 58, 385 4, 385 8, H01L 2714
Patent
active
050738097
ABSTRACT:
An Electro-Optic modulation method and device using a low-energy oblique transition of a tightly coupled super-grid. According to the present invention, a luminous beam is injected into a tightly coupled super-grid and an electric field (E) is applied to the super-grid whose amplitude is made to gradually vary so as to cause the intensity of the beam to vary. This beam is injected parallel to the plane of the films of the super-grid which guides the injected beam. The electric field is weak and applied along the growth direction of the super-grid, which provokes the appearance of a low energy oblique transition (TB) in a domain of wavelengths where the super-grid is transparent in the absence of any electric field. The super-grid is one whereby the wavelength of the luminous beam is contained in this domain. Such a device may find application in optical telecommunications systems.
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patent: 4800262 (1989-01-01), Lentine
patent: 4833511 (1989-05-01), Sugimoto
patent: 4882607 (1989-11-01), Shinada
Noda et al., "High-Speed Electroabsorption Modulator with Strip-Loaded GaInAsP Planar Waveguide," 1986 IEEE/Journal of Lightwave Technology, vol. LT-4, No. 10, Oct. 1986, pp. 1445-1453.
Yan et al., "Room-Temperature Two-Dimension Excitonic Exchange and Blue Shift of Absorption Edge in GaAs/AlGaAs Superlattices Under an Electric Field," Appl. Phys. Lett. 54(16), 17 Apr. 1989 pp. 1549-1551.
Brochure-1986 IEEE/Journal of Lightwave Technology, vol. LT-4, No. 10, Oct. 1986 "High-Speed Electroabsorption Modulator With Strip-Loaded GaInAsP Planar Waveguide"-Yukio Noda, etc. pp. 1445-1453.
Brochure-Appl. Phys. Lett. 54(16), 17 Apr. 1989/"Room-Temperature Two-Dimension Exciton Exchange and Blue Shift of Absorption Edge in GaAs/AlGaAs Superlattices Under an Electric Field"-R. H. Yan, etc.; pp. 1549-1551.
Allovon Michel
Bigan Erwan
Voisin Paul
Centre National de la Recherche Scientifique
French State Represented by the Minister of Post, Telecommunicat
Mintel William
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