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Optical FSK transmission system using a phase-diversity receiver

Optical FSK transmission system using a phase-diversity receiver

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© The Institution of Electrical Engineers
Published

A coherent optical transmission system has been demonstrated using commercial DFB lasers as both transmitter and local oscillator. A receiver sensitivity of −51.8dBm was measured at a data rate of 140Mbit/s. The system employs FSK modulation and a three-port, phase-diversity receiver. The effect of source linewidth on receiver bandwidth requirements has been examined.

Inspec keywords: frequency shift keying; optical fibres; optical links; data communication systems; digital communication systems; diversity reception

Other keywords: three-port receiver; megabit data rate; local oscillator; 140 Mbit/s; phase-diversity receiver; commercial DFB lasers; receiver bandwidth requirements; optical fibre links; coherent optical transmission system; source linewidth; frequency shift keying; FSK modulation; transmitter

Subjects: Optical communication; Fibre optics

References

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      • A.W. Davis , M.J. Pettitt , J.P. King , S. Wright . Phase diversity techniques for coherent optical receivers. J. Lightwave Technol , 561 - 572
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      • T.G. Hodgkinson , R.A. Harmon , D.W. Smith . Demodulation of optical DPSK using in-phase and quadrature detection. Electron. Lett , 867 - 868
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      • M.J. Pettitt , A.W. Davis , S. Wright , J.P. King . Coherent transmission experiments using a wideband homodyne phase-diversity receiver. Proc. SPIE , 28 - 32
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      • I. Garrett , G. Jacobsen . Theoretical analysis of heterodyne optical receivers for transmission systems using (semiconductor) lasers with non-negligible linewidth. J. Lightwave technol. , 323 - 334
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      • Kazovsky, L.G., Meissner, P., Patzak, E.: `ASK multiport optical homodyne receivers', Tech. digest of ECOC'86, 1986, Barcelona, Spain, p. 395–398.
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