Oscillators – With device responsive to external physical condition – Temperature or light responsive
Patent
1979-08-03
1981-04-28
Grimm, Siegfried H.
Oscillators
With device responsive to external physical condition
Temperature or light responsive
307312, 331107DP, 331117R, 331172, 332 3, 332 751, H03L 724
Patent
active
042648750
ABSTRACT:
In accordance with one embodiment of the invention, a microwave signal is used to modulate a laser diode and the resultant modulated light output energy from the laser diode is applied through an optical fiber waveguide to the active solid state component in a microwave oscillator circuit such that the output signal from the microwave oscillator is phase locked to the modulation carried by the light energy. The invention allows optical injection phase locking to be achieved not only at the fundamental frequency of the modulating signal, but also at various harmonics thereof; and "on-off" switching of the microwave oscillator can be controlled simultaneously with phase locking.
REFERENCES:
patent: 3628185 (1971-12-01), Evans et al.
patent: 3651423 (1972-03-01), Sewell
patent: 3662289 (1972-05-01), Dienst
patent: 3678280 (1972-07-01), Yamashita
"Illumination Improves Trapatt Performance", Microwaves, Jan. 1977, p. 14.
"Laser, Trapatt Diode Yield Speed, Power", Electronics, Aug. 3, 1978, p. 46.
Barnoski Michael K.
Hunsperger Robert G.
Yen Huan-Wun
Grimm Siegfried H.
Hughes Aircraft Company
Link, Jr. Lawrence V.
MacAllister W. H.
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