DocumentCode
86022
Title
Simultaneous QPSK-to- 
BPSK Wavelength and Modulation Format Conversion in PPLN
Author
Da Ros, F. ; Dalgaard, Kjeld ; Fukuchi, Yutaka ; Jing Xu ; Galili, Michael ; Peucheret, Christophe
Author_Institution
Dept. of Photonics Eng., Tech. Univ. of Denmark, Lyngby, Denmark
Volume
26
Issue
12
fYear
2014
fDate
15-Jun-14
Firstpage
1207
Lastpage
1210
Abstract
Phase-sensitive cascaded second-harmonic generation and difference-frequency generation in a periodically poled lithium niobate waveguide allow converting two orthogonal quadratures of an optical field to different wavelengths, thus enabling simultaneous quadrature phase-shift keying-to-2× binary phase-shift keying modulation format and wavelength conversions. Static phase-sensitive extinction ratios above 20 dB are obtained for both quadratures, resulting in error-free dynamic operation with low penalty (BER 10-9) at 10 Gbaud.
Keywords
lithium compounds; optical harmonic generation; optical waveguides; quadrature phase shift keying; LiNbO3; difference-frequency generation; error-free dynamic operation; modulation format conversion; optical field; orthogonal quadratures; periodically poled lithium niobate; phase-sensitive cascaded second-harmonic generation; quadrature phase-shift keying-to- 2×binary phase-shift keying modulation; simultaneous QPSK-to-2×BPSK wavelength; static phase-sensitive extinction ratios; Binary phase shift keying; Optical mixing; Optical pumping; Optical sensors; Optical waveguides; Phase shift keying; nonlinear optics; periodically poled lithium niobate (PPLN); phase-sensitive amplification;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2014.2318992
Filename
6802353
Link To Document