A frequency shift keying transmitter based on incoherent frequency-to-time mapping for free-space optical communications

Author

Mu, Hongqian ; Xia, Haiyun ; Yao, Jianping

Author_Institution

Microwave Photonics Res. Lab., Univ. of Ottawa, Ottawa, ON, Canada

fYear

2010

fDate

5-9 Oct. 2010

Firstpage

208

Lastpage

211

Abstract

A novel frequency shift keying (FSK) transmitter for free-space optical communications based on incoherent frequency-to-time mapping is proposed and demonstrated. In the proposed system, an incoherent broadband optical source is spectrally shaped by an optical filter that has a sinusoidal frequency response and a tunable free spectral range (FSR), and then modulated at a temporal gate. The temporally gated optical signal is sent to a dispersive device to realize frequency-to-time mapping. By switching the FSR of the optical tunable filter that is controlled by a data sequence, a temporal sinusoidal signal with FSK modulation is thus generated after frequency-to-time mapping. The proposed transmitter is experimentally demonstrated. An FSK signal at a bit rate of 700 Mbits/s is experimentally generated.

Keywords

broadband networks; frequency shift keying; optical communication; optical filters; optical modulation; FSK modulation; bit rate 700 Mbit/s; free-space optical communication; frequency shift keying transmitter; incoherent broadband optical source; incoherent frequency-to-time mapping; optical tunable filter; sinusoidal frequency response; temporal gate; temporal sinusoidal signal; tunable free spectral range; Dispersion; Frequency shift keying; Microwave filters; Optical fiber filters; Optical transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Photonics (MWP), 2010 IEEE Topical Meeting on

Conference_Location

Montreal, QC

Print_ISBN

978-1-4244-7824-8

Type

conf

DOI

10.1109/MWP.2010.5664161

Filename

5664161