Optical waveguides – With optical coupler – Switch
Patent
1990-09-07
1992-03-03
Ullah, Akm
Optical waveguides
With optical coupler
Switch
G02B 636, G02B 600
Patent
active
050938754
ABSTRACT:
A matrix of optical functional devices are divided into plural device units. Each of the device units includes at least two optical functional devices having light transmitting coatings. The coatings have transmission factors which are different from each other. Light signals emitted through the coatings from the at least two optical functional devices in each unit are received by a corresponding light receiving device among light receiving devices arranged in a one-dimensional pattern. In each device unit optical functional devices to be driven are selected, so that a coupling degree between each device unit and the corresponding light receiving device is changed.
REFERENCES:
patent: 4227260 (1980-10-01), Vojvodich et al.
patent: 4545077 (1985-10-01), Drapala et al.
patent: 4799749 (1989-01-01), Borner et al.
patent: 4915486 (1990-04-01), Hansen
"A New Double Heterostructure Optoelectronic Switching Device Using Molecular Beam Epitaxy" by Taylor et al., J. Appl. Phys, 59(2), 15 Jan. 1986, pp. 596-600.
"Double Heterostructure Optoelectronic Switch as a Dynamic Memory with Low-Power Consumption" by Kasahara et al., Appl. Phys. Lett., vol. 52, No. 9, 29 Feb. 1988.
Kasahara Kenichi
Kawai Shigeru
Ogura Ichiro
Tashiro Yoshiharu
NEC Corporation
Ullah Akm
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