Title :
Continuously tunable photonic RF filter
Author :
Coppinger, F. ; Yegnanarayanan, S. ; Trinh, P.D. ; Julali, B.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
We have proposed and demonstrated a new continuously tunable photonic notch filter. A double tunability that combines an in-phase quadrature (I-Q) photonic phase shifter with a wavelength-selective true-time-delay, is used. The I-Q phase shifter continuously tunes the null frequency over a narrow range. Discrete shifts of null frequency are obtained by changing the optical wavelength in the wavelength-selective true-time-delay. The RF signal is carried by an intensity modulated tunable laser.
Keywords :
biological techniques; biosensors; fibre optic sensors; fluorescence spectroscopy; laser applications in medicine; optical delay lines; optical filters; phase shifters; radiofrequency filters; spectrochemical analysis; tuning5601885; visible spectroscopy; I-Q phase shifter; RF signal; continuously tunable photonic RF filter; double tunability; in-phase quadrature photonic phase shifter; intensity modulated tunable laser; narrow range; null frequency; optical wavelength; photonic notch filter; wavelength-selective true-time-delay; Arm; Delay effects; Laser tuning; Optical attenuators; Optical fiber filters; Optical filters; Phase shifters; RF signals; Radio frequency; Tunable circuits and devices;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1996. LEOS 96., IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-3160-5
DOI :
10.1109/LEOS.1996.565269
