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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 5, Iss. 10 — Oct. 1, 2013
  • pp: A249–A256

Implementation of Power-Efficient ONU for Elastic-Bandwidth IFDMA-PON Uplink by Employing Polar-Coordinate Transformed PSK Mapping [Invited]

Kenji Ishii, Kiyoshi Onohara, Yuji Akiyama, Masaki Noda, Masamichi Nogami, Kazuumi Koguchi, Yuki Yoshida, Akihiro Maruta, Takashi Mizuochi, and Ken-ichi Kitayama  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 5, Issue 10, pp. A249-A256 (2013)
http://dx.doi.org/10.1364/JOCN.5.00A249


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Abstract

We present an implementation of a power-efficient optical network unit (ONU) for elastic-bandwidth coherent interleaved frequency-domain multiple access passive optical network (IFDMA-PON) uplink. The ONU for a 12 Gbps quadrature phase-shift keying (QPSK) signal is implemented on a 40 nm copper CMOS process field programmable gate array. By employing polar-coordinate transformed mapping of the PSK signal, the circuit size of the ONU is drastically reduced. The power consumption of the real-time IFDMA modulation circuit is 0.82 W, which achieves 90% reduction in power consumption compared to conventional OFDMA-PON systems. Finally, elastic-bandwidth QPSK signal generations and error-free detection are experimentally demonstrated: 6 Gbps at ONUs 1 and 2, 3 Gbps at ONU1, and 9 Gbps at ONU2.

© 2013 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4510) Fiber optics and optical communications : Optical communications
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
OFC/NFOEC 2013

History
Original Manuscript: April 30, 2013
Revised Manuscript: September 2, 2013
Manuscript Accepted: September 11, 2013
Published: September 30, 2013

Citation
Kenji Ishii, Kiyoshi Onohara, Yuji Akiyama, Masaki Noda, Masamichi Nogami, Kazuumi Koguchi, Yuki Yoshida, Akihiro Maruta, Takashi Mizuochi, and Ken-ichi Kitayama, "Implementation of Power-Efficient ONU for Elastic-Bandwidth IFDMA-PON Uplink by Employing Polar-Coordinate Transformed PSK Mapping [Invited]," J. Opt. Commun. Netw. 5, A249-A256 (2013)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-5-10-A249

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