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An optical PSK homodyne transmission experiment using 1320 nm diode-pumped Nd:YAG lasers

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2 Author(s)
D. A. Atlas ; Dept. of Electr. & Comput. Eng., Rutgers Univ., Piscataway, NJ, USA ; L. G. Kazovsky

A second-order optical phase-locked loop was constructed using 1320-nm diode-pumped miniature Nd:YAG ring lasers. Using the loop, a 140-Mb/s PSK homodyne transmission experiment was demonstrated over 28.6 km of single-mode fiber. With a loop natural frequency of 13 kHz and a damping factor of 0.6, the receiver sensitivity was -62.8 dBm, or 25 photons/bit. The authors believe this is the highest sensitivity obtained to date with any optical communication system.<>

Published in:

IEEE Photonics Technology Letters  (Volume:2 ,  Issue: 5 )