Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1993-09-10
1995-07-18
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
250214LS, G02B 2700
Patent
active
054344263
ABSTRACT:
Disclosed herein is an optical interconnection device having a light source, a plurality of optical interconnecting elements, and a light-receiving element. The optical interconnecting elements are located on an output side of the light source. Each of the elements has first and second major surfaces and comprises an integral unit made of an optical semiconductor element and a grating lens having concentric annular grooves and concentric annular projections, and two electrodes formed on the first and second major surfaces, respectively. The optical semiconductor element and grating lens of each optical interconnecting element are formed on the first major surface, for emitting or receiving light. The light-receiving element is located on an output side of the optical interconnecting elements. The optical interconnecting elements are arranged at substantially regular intervals, each positioned such that the semiconductor element and the grating lens face to the same direction. The grating lens of each of the optical interconnecting elements has optical characteristic which compensates for light-transmitting characteristic corresponding to the interval between the optical connecting element and the next optical interconnecting element.
REFERENCES:
patent: 5202567 (1993-04-01), Hamanaka
patent: 5266794 (1993-11-01), Olbright
SPIE Proc. vol. 1850 Laser Diode Technology and Applications V, pp. 93-99 Jan. 18-20, 1993; J. Cheng, et al. Jan. 18, 1993 "Optoelectronic Technology For a Reconfigurable Optical Interconnection Architecture".
Applied Optics vol. 26 No. 17 pp. 3649-3654; Sep. 1, 1987 L. A. Hornak "Fresnel Phase Plate Lenses For Through-Wafer Optical Interconnections".
IEEE Photonics Technology Letters vol. 4, No. 9 pp. 960-963 Sep. 1992; C. M. Wu, et al. "Electrically Pumped Circular-Grating Distributed-Bragg-Reflector Lasers."
Furuyama Hideto
Hamasaki Hiroshi
Kaminishi Katsuji
Kobayashi Tamon
Kushibe Mitsuhiro
Kabushiki Kaisha Toshiba
Nelms David C.
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