TY - JOUR
T1 - Optically controlled low-distortion delay of GHz-wide radio-frequency signals using slow light in fibers
AU - Zadok, Avi
AU - Raz, Oded
AU - Eyal, Avishay
AU - Tur, Moshe
N1 - Funding Information:
Manuscript received November 27, 2006; revised January 8, 2007. This work was supported in part by the Israel Science Foundation. The work of A. Zadok was supported by the Israel Clore Foundation under a Ph.D. study scholarship. A. Zadok, A. Eyal, and M. Tur are with the Faculty of Engineering, Tel-Aviv University, Tel Aviv 69978, Israel (e-mail: avinoamz@post.tau.ac.il). O. Raz was with the Faculty of Engineering, Tel-Aviv University, Tel Aviv 69978, Israel. He is now with the Department of Electrical Engineering, Technical University of Eindhoven, 5600 MB Eindhoven, The Netherlands. Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2007.891980
PY - 2007/4/1
Y1 - 2007/4/1
N2 - Continuously tunable delay of broadband analog signals for microwave photonics applications is described and demonstrated, based on stimulated Brillouin scattering (SBS) in optical fibers. The optical spectrum of the pump laser is synthesized using chirp control, in order to obtain a broadened SBS "slow light" process, with long delay and low amplitude and phase distortions. The resulting SBS process is applied to delay 1-GHz-wide linear frequency modulated radio-frequency signals of arbitrary carrier frequency. Delays up to 230 ps are observed, with a worst-case sidelobe suppression ratio of -26 dB.
AB - Continuously tunable delay of broadband analog signals for microwave photonics applications is described and demonstrated, based on stimulated Brillouin scattering (SBS) in optical fibers. The optical spectrum of the pump laser is synthesized using chirp control, in order to obtain a broadened SBS "slow light" process, with long delay and low amplitude and phase distortions. The resulting SBS process is applied to delay 1-GHz-wide linear frequency modulated radio-frequency signals of arbitrary carrier frequency. Delays up to 230 ps are observed, with a worst-case sidelobe suppression ratio of -26 dB.
KW - Microwave photonics
KW - Optical antenna beam-forming
KW - Optical signal processing
KW - Slow light
KW - Stimulated Brillouin scattering (SBS)
UR - http://www.scopus.com/inward/record.url?scp=34047228694&partnerID=8YFLogxK
U2 - 10.1109/LPT.2007.891980
DO - 10.1109/LPT.2007.891980
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AN - SCOPUS:34047228694
SN - 1041-1135
VL - 19
SP - 462
EP - 464
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 7
ER -