Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1993-11-22
1995-02-14
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250551, H01J 4014
Patent
active
053897765
ABSTRACT:
A complementary field-effect transistor (CFET) receiver apparatus and method for receiving optical signals and for generating output signals is disclosed. In particular, four input beams, two of which are unique, are utilized to turn two series-connected FETs on and off to generate the output signals. A CFET photo-receiver according to the invention operates in push-pull fashion to conserve electrical power, and can be realized as a monolithically integrated device using FET-SEED fabrication techniques.
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D'Asaro, L. A., Chirovsky, L. M. F., Laskowski, E. J., Pei, S. S., Woodward, T. K., Lentine, A. L., Leibenguth, R. E., Focht, M. W., Freund, J. M., Guth, G. G., and Smith, L. E., "Batch Fobrication and Operation of GaAs-Al.sub.x Ga.sub.1-x As Field-Effect Transistor-Self-Electrooptic Effect Device (FET-SEED) Smart Pixel Arrays," IEEE Journal of Quantum Electronics, vol. 29, No. 2, Feb. 1993, pp. 670-677.
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Woodward, T. K., Lentine, A. L., Chirovsky, L. M. F., Pei, S. S., Freund, J. M., D'Asaro, Focht, M. F., Laskowski, E. J., Guth, G. D., and Smith, L. E., "Operating Characteristics of GaAs/AlGaAs FET-SEED Smart Pixels," IEEE, 1992, pp. 26.4.1-26.4.4.
Woodward, T. K., Chirovsky, L. M. F., Lentine, A. L., D'Asaro, L. A., Laskowski, E. J., Focht, M., Guth, G., Pei, S. S., Ren, M. T., Kopf, R. F., Kuo, J. M., and Feuer, M. D., "Operation of a Fully Integrated GaAs-Al.sub.x Ga.sub.1-x As FET-SEED: A Basic Optically Addressed Integrated Circuit," IEEE Photonics Technology Letters, vol. 4, No. 6, Jun. 1992, pp. 614-617.
Allen Stephone B.
AT&T Corp.
Westin Edward P.
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