OPTICAL COMMUNICATION APPARATUS AND OPTICAL COMMUNICATION METHOD
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United States of America Patent
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Issued Date -
Sep 15, 2011
app pub date -
Jan 21, 2011
filing date -
Mar 9, 2010
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Abandoned
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Abstract
A present invention provides an optical communication apparatus and method which can use a data modulator and an OFDM modulator more narrow band than a transmission band.The optical communication apparatus comprise an intensity modulation means for modulating intensity of continuous light with a sine wave, a means for separating optical signal outputted by said intensity modulation means into a bottom sideband and an upper sideband and outputting, a first modulation means for modulating said upper sideband with a first electrical signal, a second modulation means for modulating said bottom sideband with a second electrical signal, and a multiplex means for multiplexing an output signal from said first modulation means and an output signal from said second modulation means and outputting.
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