Tunable RF filter device using optical waveguide paths with splitter and combiner pairs and related methods

A method of Radio Frequency (RF) processing comprising:

• generating an optical carrier signal;
• modulating the optical carrier signal with an RF input signal using a modulator and first and second optical waveguide paths coupled thereto, the first and second optical waveguide paths having first and second dispersion slopes of opposite sign from each other;
• and
• generating an RF output signal with at least one frequency notch therein from the modulated optical carrier signal and based upon the first and second dispersion slopes being of opposite sign from each other.

A method of Radio Frequency (RF) processing comprising:

• receiving an RF input signal from an antenna;
• modulating an optical carrier signal with the RF input signal using a modulator and first and second optical waveguide paths coupled thereto, the first and second optical waveguide paths having first and second dispersion slopes of opposite sign from each other;
• and
• generating an RF output signal with at least one frequency notch therein from the modulated optical carrier signal and based upon the first and second dispersion slopes being of opposite sign from each other.