论文信息 - Polarisation Stability Requirements for Coherent Optical Fibre Transmission Systems

Polarisation Stability Requirements for Coherent Optical Fibre Transmission Systems

Heterodyne (1) and homodyne (2) detection schemes are presently being developed as an alternative to direct detection in optical fibre communications. These coherent systems can offer better receiver sensitivity and will allow the available bandwidth of monomode fibre to be used efficiently. However, their performance will be dependent on matching the polarisation state (S.O.P) at the output of the transmission fibre to that of the local oscillator, as Fig 1 illustrates. This paper discusses techniques that can be used by the system designer to overcome the problems of polarisation matching, and it presents experimental results obtained from a coherent transmission system operating over conventional circular core fibre.

D. W. Smith | T. G. Hodgkinson | R. A. Harmon

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