Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Heterojunction
Patent
1991-07-09
1994-08-02
Mintel, William
Active solid-state devices (e.g., transistors, solid-state diode
Thin active physical layer which is
Heterojunction
257 21, 257 96, 257 97, 257197, 372 45, 372 46, 372 48, 372 50, H01L 3300
Patent
active
053348540
ABSTRACT:
An optical semiconductor device with wavelength selectivity comprises a substrate, a collector layer provided on said substrate and composed of a semiconductor having a first conductive type, a multiple quantum well layer provided on said collector layer, a base layer provided on said multiple quantum well layer and composed of a semiconductor having a second conductive type, said base layer consisting of an active layer, and first and second semiconductor layers with said active layer sandwiched therebetween and having a wider band gap than said active layer, said base layer and said multiple quantum well layer propagating light, an emitter layer provided on said base layer and composed of a semiconductor having the first conductive type, and a collector electrode, a base electrode and an emitter electrode electrically connected to said collector layer, base layer and emitter layer, respectively.
REFERENCES:
patent: 5038185 (1991-08-01), Thornton
patent: 5157680 (1992-10-01), Goto
Numai et al., "Tunable Wavelength Filter Using Phase-Shift Controllable DFB LD," Opto-Electronics Research Laboratories, NEC Corporation, C-161, 1988, p. 63.
"Quantum-confined field-effect wavelength tuning in a three-terminal double quantum well laser," by F. Y. Huang, Applied Physics Letters, vol. 56, No. 23, pp. 2282-2284 (Jun. 4, 1990).
"Tunable Infrared Modulator and Switch Using Stark Shift in Step Quantum Wells, " by R. P. G. Karunasiri et al., IEEE Electron Devices Letters, vol. 11, No. 5, pp. 227-229 (May 11, 1990).
"565 Mbit/s 219km transmission experiment using four gain controlled packaged semiconductor laser amplifiers," by A. D. Ellis et al., Electronics Letters, vol. 26, No. 6, pp. 385-387 (Mar. 15, 1990).
"Quadratic electro-optic effect due to the quantum-confined Stark effect on quantum wells", Joseph S. Weiner, et al., Appln. Phys. Lett. 50 (13), Mar. 30, 1987, pp. 842-844.
Okuda Masahiro
Ono Takeo
Canon Kabushiki Kaisha
Mintel William
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