Broadband electrooptical modulator

Details Broadband electrooptical modulator Broadband electrooptical modulator

1974-04-26

1976-10-26

Moskowitz, Nelson

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

331 945M, 350150, H01S 310

Patent

active

039887049

ABSTRACT:
Broadband electrooptical modulator means for use in optical and electrooptical communication systems and the like, the modulator means including modulator driver and driver amplifier means, broadband matching network means, temperature control means, and means to automatically compensate for variations including electronic variations in the output. The subject modulator means employ optically coupled crystal elements which have their optical Z-axes oriented perpendicularly to each other to cancel natural birefringence and to reduce temperature sensitivity including the temperature sensitivity of the extinction ratio of the crystals.

REFERENCES:
patent: 3532891 (1970-10-01), Simmons et al.
patent: 3675022 (1972-07-01), Nelson et al.
patent: 3691484 (1972-09-01), Dore
patent: 3696404 (1972-10-01), Brainerd
patent: 3849732 (1974-11-01), Pezot
Brand, "Optical Modulator System," 10/72, Rept. No.: NASA-cr-130195.
Chenaveth et al., "High Data Rate Modulator," 9/72, Rept. No. AD-908-291/8st.
Biazzo, "Fabrication of a Lithium Tantalate . . .," 5/71, pp. 1016-1020, Applied Optics, vol. 10, No. 5.

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