We propose and demonstrate a photonic phase shifter based a on vector-sum technique that uses polarization-maintaining fibers (PMFs). We achieved a continuous and full phase shift up to 2pi at 30.48 GHz by controlling the polarization state of the light injected into two pieces of PMF of different lengths and applying two different modulator bias voltages.
© 2005 Optical Society of America
(060.2340) Fiber optics and optical communications : Fiber optics components
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(350.4010) Other areas of optics : Microwaves
Kwang-Hyun Lee, Young Min Jhon, and Woo-Young Choi, "Photonic phase shifters based on a vector-sum technique with polarization-maintaining fibers," Opt. Lett. 30, 702-704 (2005)