Photonic generation of widely tunable and background-free binary phase-coded radio-frequency pulses
作者： Wei Li , Li Xian Wang , Ming Li , Ning Hua Zhu
DOI: 10.1364/OL.38.003441
关键词:
摘要: We present a novel photonic approach to generating widely tunable and background-free binary phase-coded radio-frequency (RF) pulses by cascading polarization modulator (PolM) phase (PM). The PolM is used produce an optical carrier two sidebands with orthogonal states. shift θ between the controlled electrical driving signal applied PM. For θ>π/2 or <π/2, of detected RF 0 π, respectively. θ=π/2, there no recovered in photodiode (PD). In this way, can be generated, while power launched PD keeps constant. proposed technique therefore background free eliminating baseband frequency components. Moreover, π independent amplitude signal. scheme theoretically analyzed experimentally verified.
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