Light pulse generator

Details Light pulse generator Light pulse generator

1994-06-30

1996-09-24

Epps, Georgia Y.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

257431, G02F 103

Patent

active

055596282

ABSTRACT:
The light pulse generator includes a source for generating a light beam, an electroabsorbent modulator for modulating the light beam into light pulses, and means for applying voltage control to the modulator. The electroabsorbent modulator includes at least two doped layers and between them at least one intermediate layer that is made of a material that is not intentionally doped, and that has an electroabsorbent material included therein. The absorbent or transparent state of the intermediate layer is controlled by a voltage applied between two of the doped layers that have doping of the same sign, the transmissivity of the modulator as a function of the voltage controlling it being at a maximum in the vicinity of zero volts and being symmetrical thereabout.

REFERENCES:
patent: 3748597 (1973-07-01), Reinhart
patent: 4766471 (1988-08-01), Ovshinsky et al.
patent: 5126553 (1992-06-01), England et al.
L'Echo Des Recherches, No. 149, 1992, France pp. 29-38, Bigan E'Guided wave electro-absorbing modulators for 1.55 mu m optical links'.
Journal of Lightwave Technology, vol. 11, No. 3, Mar. 1193, New York US pp. 468-473.
Electronics Letters, vol. 28, No. 11, May 1992, Stevenage GB, pp. 1007-1008 XP000363642.

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