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Optical Engineering

Optical millimeter-wave generation with modified frequency quadrupling scheme
Author(s): Shanghong Zhao; Zihang Zhu; Yongjun Li; Xingchun Chu; Xuan Li
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Paper Abstract

A dispersion-tolerant full-duplex radio-over-fiber (RoF) system based on modified quadrupling-frequency optical millimeter (mm)-wave generation using an integrated nested Mach–Zehnder modulator (MZM), an electrical phase modulator, and an electrical gain is proposed. Not only does the scheme reduce the cost and complexity of base station by reusing the downlink optical carrier, but also the generated optical mm-wave signal with base-band data carried only by 1-s order sideband can overcome both the fading effect and bit walk-off effect caused by the fiber dispersion. Simulation results show that the eye diagram keeps open and clear even when the quadrupling-frequency optical mm-wave is transmitted over 120-km single-mode fiber, and the bidirectional 2.5  Gbit/s data are successfully transmitted over 40 km for both upstream and downstream channels with <1-dB power penalty.

Paper Details

Date Published: 20 November 2013
PDF: 8 pages
Opt. Eng. 52(11) 116109 doi: 10.1117/1.OE.52.11.116109
Published in: Optical Engineering Volume 52, Issue 11
Show Author Affiliations
Shanghong Zhao, Air Force Engineering Univ. (China)
Zihang Zhu, Air Force Engineering Univ. (China)
Yongjun Li, Air Force Engineering Univ. (China)
Xingchun Chu, Air Force Engineering Univ. (China)
Xuan Li, Air Force Engineering Univ. (China)

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