title: Linear photonic technique for fixed and time varying RF phase shifts of radar signals.
abstract: A simple linear photonic technique is proposed to achieve fixed or time varying radio-frequency (RF) phase shifts which can be used in applications such as radar signal manipulation. The technique is based on fixing or tuning the wavelength of an RF modulated optical signal within the reflection band of a fiber Bragg grating (FBG) filter with a step group delay profile. The scheme is verified in a realistic simulation to achieve a Doppler shift in a pulsed CW signal return.
authors.affiliation: Defence Science and Technology Organisation, Edinburgh, SA, Australia. manik.attygalle@dsto.defence.gov.au
authors.forename: Manik
authors.initials: M
authors.lastname: Attygalle
authors.forename: Dmitrii
authors.initials: D
authors.lastname: Stepanov