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An 8 Gb/s QPSK optical homodyne detection experiment using external-cavity laser diodes

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3 Author(s)
Norimatsu, S. ; NTT Transmission Syst. Lab., Kanagawa, Japan ; Iwashita, Katsushi ; Noguchi, K.

A quadrature-phase-shift-keying optical homodyne detection experiment was conducted at a bit rate of 8 Gb/s. External-cavity laser diodes and a single-body QPSK phase modulator were used. The optical carrier was recovered by a decision-directed phase-locked loop. The first reported measurement of bit-error-rate performance is given. A receiver sensitivity of -27.8 dBm was achieved.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:4 ,  Issue: 7 )