We review recent work on narrowband orthogonally polarized optical RF single sideband generators as well as dual-channel equalization,both based on high-Q integrated ring resonators.The devices operate in the optical telecommunications C-band and enable RF operation over a range of either fixed or thermally tuneable frequencies.They operate via TE/TM mode birefringence in the resonator.We achieve a very large dynamic tuning range of over 55 dB for both the optical carrier-to-side-band ratio and the dual-channel RF equalization for both the fixed and tunable devices.