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Opt Express. 2008 Jan 21;16(2):829-40.

64 and 128 coherent QAM optical transmission over 150 km using frequency-stabilized laser and heterodyne PLL detection.

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1
Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai-shi, Miyagi-ken, 980-8577 Japan. masato@riec.tohoku.ac.jp

Abstract

We describe 1 Gsymbol/s, 64 and 128 coherent quadrature amplitude modulation (QAM) transmissions over 150 km, in which we employ a frequency-stabilized C(2)H(2) fiber laser, an optical phase-looked loop (OPLL), and a heterodyne detection circuit.

PMID:
18542157
[Indexed for MEDLINE]
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