Open AccessWidely tunable single-bandpass microwave photonic filter employing a non-sliced broadband optical source
Author(s) -
Xiaoxiao Xue,
Xiaoping Zheng,
Hanyi Zhang,
Bingkun Zhou
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.018423
Subject(s) - passband , band pass filter , optical filter , optical carrier transmission rates , broadband , optics , baseband , photonics , modulation (music) , slicing , microwave , materials science , optoelectronics , computer science , physics , telecommunications , optical fiber , acoustics , radio over fiber , cmos , world wide web
We demonstrate a novel microwave photonic filter based on a non-coherent broadband optical source and the variable optical carrier time shift (VOCTS) method. Optical slicing which is essential conventionally is not employed in our scheme. Nevertheless, equivalent "electrical slicing" is performed by VOCTS, generating a passband free from the carrier-suppression effect. The baseband response is eliminated by using carrier-suppression or phase modulation. Single bandpass is also achieved due to the continuous-time sinusoidal impulse response. Detailed theoretical analyses are presented and agree with the experiments quite well.