Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1996-09-13
1998-06-23
Le, Que
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250551, H01J 4014
Patent
active
057708517
ABSTRACT:
An improved parallel optical logic operator provides a path for light to pass through substrates in which a light source and an optical logic device are arranged. An optical logic device operates by transmission of light forwarded to a predetermined direction. This increases integration efficiency of the system by eliminating optical parts for changing the light path. A unit chip includes a laser array for generating a predetermined light in accordance with an electrical signal for a logic process, a laser array substrate on which via holes are formed for passing light, a microlens array for converting the light beam emitted from each laser device of the laser array into a parallel light beam for passing through the via hole, and an optical logic circuit array formed with a combination of an S-SEED which performs a logic function by transmission of the light signal through an optical window in S-SEED. A plurality of unit chips are laminated so that the light emitted from the laser device of one of the unit chips passes through an optical logic circuit of a corresponding unit chip and can be made incident on the optical logic circuit in the next unit chip through a via hole.
REFERENCES:
patent: 5352886 (1994-10-01), Kane
patent: 5500523 (1996-03-01), Hamanaka
McCormick et al, "Five-Stage Free-Space Optical Switching Network with Field-Effect Transistor Self-Electro-Optic-Effect-Device Smart-Pixel Arrays", Applied Optics, vol. 33, No. 8, Mar. 10, 1994, pp. 1601-1618.
Willner et al, "2-D WDM Optical Interconnections Using Multiple-Wavelength VCSEL's For Simultaneous and Reconfigurable Communication Among Many Planes", IEEE Photonics Technology Letters, vol.5, No. 7, Jul. 1993, pp. 838-841.
Chu Hye-Yong
Hyun Kyung-Sook
Kim Kwang-Joon
Kwon O-Kyun
Park Hyo-Hoon
Electronics and Telecommunications Research Institute
Le Que
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