Photonic RF phase shifter with mitigated RF power...

Details Photonic RF phase shifter with mitigated RF power... Photonic RF phase shifter with mitigated RF power...

2005-05-31

2005-05-31

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

C385S003000, C385S008000, C385S009000, C359S237000, C359S238000

Reexamination Certificate

active

06900707

ABSTRACT:
A power balanced photonic RF phase shifter includes: a microwave drive; a phase controller operably connected to the microwave drive; and a linearizing arm connected in parallel with the microwave drive, the linearizing arm operating under a bias voltage, Vlin, that is controlled such that power variations of the photonic RF phase shifter are mitigated. In a preferred embodiment, the bias voltage, Vlin, is controlled to keep an optical phase of the photonic RF phase shifter at a constant value. In a preferred embodiment, the microwave drive, the phase controller and the linearizing arm comprise (three) Mach-Zehnder modulators.

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