Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Heterojunction
Patent
1993-05-21
1994-07-12
Crane, Sara W.
Active solid-state devices (e.g., transistors, solid-state diode
Thin active physical layer which is
Heterojunction
257 20, 257184, 257187, H01L 2714, H01L 3100
Patent
active
053291379
ABSTRACT:
An optical switch comprises a heterojunction transistor having a source electrode, a gate, a mesa, and three self-aligned waveguides, the mesa being ion implanted and having a single quantum well under the gate electrode, the single quantum well being comprises of undoped, narrow bandgap material bound on both sides by regions p-doped, wide bandgap material, both of said p-doped regions have symmetrically graded bandgaps, being most narrow next to the quantum well and increasing out to a wide and constant value away from the quantum well. A highly n-doped and totally depleted charge sheet is placed in a wide bandgap material, very near the gate side of the quantum well heterojunction. The charge sheet serves to induce a voltage controllable inversion channel within the quantum well. A source of optical energy is applied to one of said waveguides, and a total internal reflection is created in the switch by inducing a change in refractive index under the gate by means of a charge applied from the source electrode.
REFERENCES:
patent: 4689115 (1987-08-01), Ibbotson et al.
patent: 4751194 (1988-06-01), Cibert et al.
patent: 4761620 (1988-08-01), Bar-Joseph et al.
patent: 4806997 (1989-02-01), Simmons et al.
patent: 4872744 (1989-10-01), Abeles et al.
patent: 4877299 (1989-10-01), Lorenzo et al.
patent: 4899201 (1990-02-01), Xu et al.
patent: 5010374 (1991-04-01), Cooke et al.
patent: 5111255 (1992-05-01), Kiely et al.
Fowles, G. R., Introduction to Modern Optics, 1975, 45-46.
Taylor Geoffrey W.
Vang Tim
Crane Sara W.
Garfinkle Irwin P.
Singer Donald J.
The United States of America as represented by the Secretary of
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