Wavelength Dependent, Tunable, Optical Time Delay System for Electrical Signals.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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This patent discloses a wavelength dependent, tunable, optical time delay system for electrical signals having a conversiontuning unit for converting an incoming electrical signal into an optical signal as well as selectively varying the wavelength of the optical signal a single-mode, high dispersion optical fiber for receiving the optical signal and through which the optical signal propagates at a speed dependent upon its wavelength and a dectorconverter for converting the optical signal back to an electrical signal. By utilizing a separate preselected electronic control-signal fed to the conversiontuning unit, the wavelength of the optical signal entering the fiber can be varied over a preselected wavelength band of interest. By selectively varying the wavelength of the optical signal, the electrical signal can be effectively and rapidly time delayed as desired in response to the electronic signal.
- Electrical and Electronic Equipment