A Novel Broadband Photonic RF Phase Shifter Academic Article uri icon


  • A novel broadband photonic RF phase shifter is proposed that employs single-sideband modulation of the broadband RF signal onto an optical carrier. The phase of the carrier is shifted relative to the modulated signal using an optical allpass filter. Ring-resonator-based optical allpass filters are tuned across the carrier frequency to yield an RF phase shift of over 360 degrees. Results from a proof-of-concept experimental demonstration are presented for modulation frequencies in the range of 2-4 GHz. © 2008 IEEE.

author list (cited authors)

  • Adams, D. B., & Madsen, C. K.

citation count

  • 38

publication date

  • August 2008