Electro-optical phase modulator

Details Electro-optical phase modulator Electro-optical phase modulator

1988-08-05

1989-12-12

LaRoche, Eugene R.

350384, 350392, 350388, G02F 101

Patent

active

048863459

ABSTRACT:
An electro-optical phase modulator. The electro-optical modulator incorporates a stripline configuration with a bottom ground plane attached to the bottom surface of the crystal and a signal conductor that is affixed to the top surface of the crystal. The signal conductor is separatred from a top ground plane by a dielectric, usually air. The top ground plane also overhangs the sides of the crystal to lower the effective dielectric constant of the modulating signal that is applied to the signal conductor. In this way, the electric field established in the crystal by the modulating signal has a speed more nearly equal to the speed of the optical beam that passes through the crystal and is modulated by the electrical signal.

REFERENCES:
patent: 3791718 (1974-02-01), Chow
patent: 3804489 (1974-04-01), Li et al.
patent: 4240696 (1980-12-01), Tracy et al.
patent: 4396252 (1983-08-01), Turner
patent: 4618819 (1986-10-01), Mourou et al.
White et al, "Electro-Optical Modulators Employing Intermittent Interaction", IEEE, Jan. 1963, p. 214.
A. Yariv, "Optical Modulators", copyright 1985, Chapter 9, Holt, Rinehart and Winston.

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