Traveling wave, electrooptic devices with effective velocity mat

Details Traveling wave, electrooptic devices with effective velocity mat Traveling wave, electrooptic devices with effective velocity mat

1981-11-16

1984-05-15

Lee, John D.

350 9613, G02B 5174

Patent

active

044484798

ABSTRACT:
A simulated velocity match between a traveling optical wave and a traveling electrical modulating wave is obtained in traveling wave, velocity mismatched electrooptic devices by introducing, at longitudinally spaced intervals along the electrical signal wavepath, means for producing the equivalent of a 180 degree phase shift in the effect of the modulating signal upon the operative electrooptic parameter of said device. This technique is employed to minimize the effect of walk-off due to velocity mismatch in modulators, phase shifter and mode converters.

REFERENCES:
patent: 4005927 (1977-02-01), Caton
patent: 4251130 (1981-02-01), Marcatili
patent: 4372643 (1983-02-01), Liu et al.
patent: 4380364 (1983-04-01), Marcatili
patent: 4381139 (1983-04-01), Alferness
Schmidt et al., Optics Letters, vol. 2, No. 2, Feb. 1978, "Efficient Optical Waveguide Switch/Amplitude Modulator", pp. 45-47.
IEEE Journal of Quantum Electronics, vol. QE-12, No. 7, Jul. 1976, "Switched Directional Couplers with Alternating .DELTA..beta.", pp. 396-401.

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