Title :
Broadband Photonic Radio-Frequency Channelization Based on a 39-GHz Optical Frequency Comb
Author :
Xie, Xiaojun ; Dai, Yitang ; Ji, Yu ; Xu, Kun ; Li, Yan ; Wu, Jian ; Lin, Jintong
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
fDate :
4/15/2012 12:00:00 AM
Abstract :
A novel photonic channelization scheme for a wideband radio-frequency (RF) signal based on an optical frequency comb (OFC), a comb filter, and an optical de-mux is proposed and demonstrated. In the proposed channelizer, the input broadband RF signal is multicast by the OFC, spectrally sliced by a Fabry-Perot filter (FPF) and then channelized by a regular optical de-mux. Compared to previous proposals, the OFC can provide uniform and low-noise channelization and simplify the spectral alignment to the FPF. We demonstrate our scheme experimentally based on a 39-GHz-spaced OFC. As an application, instantaneous multiple-frequency measurement is demonstrated by directly detecting the channelized RF signal.
Keywords :
comb filters; demultiplexing; microwave photonics; optical filters; radio-over-fibre; telecommunication channels; Fabry-Perot filter; RF signal; broadband photonic radio-frequency channelization; comb filter; frequency 39 GHz; multiple-frequency measurement; optical de-mux; optical frequency comb; photonic channelization; Optical fibers; Optical filters; Optical signal processing; Photonics; RF signals; Radio frequency; Microwave photonic; optical frequency comb; radio-frequency signal processing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2185787
