Patent ID: 8200047
Filing Date: 2012-06-12
Classification: G02B,G02F,H01Q,H04J

Abstract:
1. A time delay system, comprising: a tunable laser configured to produce a single optical carrier signal having a tunable wavelength; an optical modulator configured to modulate an input signal onto the single optical carrier signal to produce a modulated optical signal; a first photonic circuit configured to delay the modulated optical signal by one of a first plurality of different time delays depending on the wavelength of the single optical carrier signal; a second photonic circuit configured to delay the modulated optical signal by one of a second plurality of different time delays depending on the wavelength of the single optical carrier signal, wherein the second plurality of different time delays is different from the first plurality of different time delays; a switch configured to selectively couple the modulated optical signal to one of the first and second photonic circuits; and a delay controller configured to tune the wavelength of the single optical carrier signal of the tunable laser and to send a control signal to the switch based on a selected one of the first and second plurality of time delays.