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Optical homodyne receiver with a six-port fibre coupler

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2 Author(s)
Stephens, T.D. ; Telecom Australia Research Laboratories, Clayton, Australia ; Nicholson, G.

The performance of a PSK optical homodyne system based on a six-port fibre coupler, which avoids the need for an optical 90° hybrid device, is determined. Depending on the actual receiver implementation using the coupler, the receiver sensitivity is shown to be about 0.5¿3 dB from ideal and local laser excess intensity noise can be cancelled.

Published in:

Electronics Letters  (Volume:23 ,  Issue: 21 )