Title :
A Photonic Comb Filter With Independently and Digitally Tunable Bandwidth and Frequency Spacing
Author :
Yan, L.-S. ; Ye, J. ; Jiang, H.-Y. ; Pan, W. ; Luo, B. ; Yi, A.-L. ; Guo, Y.-H. ; Yao, X. Steve
Author_Institution :
Center for Inf. Photonics & Commun., Southwest Jiaotong Univ., Chengdu, China
fDate :
7/1/2011 12:00:00 AM
Abstract :
A photonic comb filter with digitally tunable bandwidth and frequency spacing is proposed. Using cascaded differential-group-delay (DGD) element and polarization switch based filters, we demonstrate independent tunability of both parameters with >; 12-dB first-sidelobe reduction for a 6-bit configuration. Limitations of such an approach are also discussed.
Keywords :
comb filters; delays; light polarisation; optical filters; optical switches; optical tuning; 6-bit configuration; cascaded differential-group-delay; digitally tunable bandwidth; first-sidelobe reduction; frequency spacing; photonic comb filter; polarization switch based filters; Band pass filters; Bandwidth; Microwave filters; Optical fiber filters; Photonics; Switches; Differential-group-delay; microwave photonics; photonic comb filter;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2140393
