No abstract

An all-optical photonic microwave phase shifter that requires only a single DC voltage control to realize continuous 0 to 360 RF signal phase shift over a wide frequency range is presented. It is based on using an integrated dual-parallel Mach Zehnder modulator with a 90 polarization rotator in one arm to generate orthogonally polarized optical carrier and RF modulation sidebands, and using a polarization dependent optical phase shifter to introduce different optical phase shifts to these orthogonal polarization components. The phase shifter has a fast response time, a high resolution and a compact structure. Experimental results are presented which demonstrate a continuous 360 phase shift with a flat phase and amplitude response performance over a microwave frequency range of 6.5-26.5 GHz.Index Terms: Radio frequency photonics, fiber optics links and subsystems, analog optical signal processing, wideband phase shifters.

No abstract

No abstract

No abstract