Electromagnetic wave modulator with quantum well structure

Details Electromagnetic wave modulator with quantum well structure Electromagnetic wave modulator with quantum well structure

1993-10-13

1995-07-11

Lee, John D.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359245, 359259, G02F 1015

Patent

active

054326346

ABSTRACT:
The invention pertains to an electromagnetic wave modulator comprising a quantum well semiconductor structure having two adjacent wells, the coupling of which is modified under the effect of an electrical field by the use of the phenomenon of anti-crossing of resonating levels. With this type of modulator, it is possible to attain 20% of modulation (as in the prior art) but with heightened sensitivity to the electrical field and a very short response time.

REFERENCES:
patent: 5017974 (1991-05-01), Greene
patent: 5105301 (1992-04-01), Campi
patent: 5202897 (1993-04-01), Whitehead
patent: 5208695 (1993-05-01), Dutta
patent: 5323019 (1994-06-01), Dutta et al.
IEEE Electron Device Letters vol. 11, No. 5, May 1990, New York pp. 227-229, Karunasiri et al, "Tunable Infrared Modulator and Switch Using . . . ".
Applied Physics Letters vol. 59, No. 5 Jul. 29, 1991, New York pp. 555-557, Vodjdani et al, "Tunneling Assisted Modulation of . . . ".
Proc. 18th Int. Symp. on Gallium Arsenide and Related Compounds Seattle, Wash. Sep. 9-12, 1991 pp. 625-630, Sirtori et al, "Second Harmonic Generation In . . . ".
IEEE Journal of Quantum Electronics vol. 27, No. 3, Mar. 1991, New York pp. 702-707 Chan et al, "Field Induced Optical Effects . . . ".

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