DocumentCode
1400421
Title
Bandwidth efficient transmission of 4 Gb/s on two microwave QPSK subcarriers over a 48 km optical link
Author
Hill, Paul ; Olshansky, Robert
Author_Institution
GTE Lab. Inc., Waltham, MA, USA
Volume
2
Issue
7
fYear
1990
fDate
7/1/1990 12:00:00 AM
Firstpage
510
Lastpage
512
Abstract
The use of two quadrature phase shift keying (QPSK)-modulated subcarriers over a wideband direct detection optical communications system with a RF bandwidth efficiency of 1 b/s/Hz is reported. It is shown that two subcarriers each carrying 2 Gb/s QPSK, compactly spaced at just twice the data rate, can achieve a receiver sensitivity of -19.5 dBm over 48 km without crosstalk between subcarriers. This represents a receiver sensitivity improvement of 5 dB over a 4-Gb/s single QPSK subcarrier system.<>
Keywords
optical links; optical modulation; phase shift keying; receivers; sensitivity; 4 Gbit/s; 48 km; RF bandwidth efficiency; data rate; microwave QPSK subcarriers; optical link; quadrature phase shift keying; receiver sensitivity; wideband direct detection optical communications system; Bandwidth; FETs; Intensity modulation; Optical fiber communication; Optical modulation; Optical receivers; Optical sensors; Quadrature phase shift keying; Stimulated emission; Time division multiplexing;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.56641
Filename
56641
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