title: Photonic microwave quadrature filter with low phase imbalance and high signal-to-noise ratio performance.
abstract: A photonic microwave quadrature filter is presented. It has a very simple structure, very low phase imbalance, and high signal-to-noise ratio performance. Experimental results are presented that demonstrate a photonic microwave quadrature filter with a 3 dB operating frequency range of 10.5-26.5 GHz, an amplitude and phase imbalance of less than ±0.3  dB and ±0.15°, and a signal-to-noise ratio of more than 121 dB in a 1 Hz noise bandwidth.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Cao
authors.forename: Erwin H W
authors.initials: EH
authors.lastname: Chan
authors.forename: Xudong
authors.initials: X
authors.lastname: Wang
authors.forename: Xinhuan
authors.initials: X
authors.lastname: Feng
authors.forename: Bai-ou
authors.initials: BO
authors.lastname: Guan