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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 30, Iss. 16 — Aug. 15, 2012
  • pp: 2661–2667

20-Gb/s AMO OFDM Transmission Over 20-km Bidirectional Link by Separate I/Q Baseband Delivery Using Remotely Fed 1-GHz RSOAs

Jeong-Min Joo, Moon-Ki Hong, Dung Tien Pham, and Sang-Kook Han

Journal of Lightwave Technology, Vol. 30, Issue 16, pp. 2661-2667 (2012)


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Abstract

We demonstrated a novel 20-Gb/s adaptively modulated optical orthogonal frequency division multiplexed (AMO OFDM) transmission scheme with separate in-phase (I) and quadrature (Q) channel baseband delivery over a 20-km single fiber link using remotely fed 1-GHz reflective semiconductor optical amplifiers (RSOAs) for a colorless optical network unit (ONU). The OFDM symbols with adaptive bit-/power-loading were applied to overcome the bandwidth limitation of RSOAs and to optimize the performance. In order to realize the baseband transmission without Hermitian symmetry, the I and Q channel data streams in the OFDM symbols were separately transmitted by optical carriers at two different wavelengths. Our proposed scheme was experimentally validated using a periodic property of free spectral range (FSR) in a wavelength multiplexer. The separate optical “dual” carriers were provided by the same port of the wavelength multiplexer to avoid wasting the number of wavelength division multiplexed channels.

© 2012 IEEE

Citation
Jeong-Min Joo, Moon-Ki Hong, Dung Tien Pham, and Sang-Kook Han, "20-Gb/s AMO OFDM Transmission Over 20-km Bidirectional Link by Separate I/Q Baseband Delivery Using Remotely Fed 1-GHz RSOAs," J. Lightwave Technol. 30, 2661-2667 (2012)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-30-16-2661


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