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An improved radio-over-fiber communication system based on optical carrier suppression

YIN-CHUAN ZHAO1, ZHENG-MAO WU1, GUANG-QIONG XIA1,2,*

Affiliation

  1. School of Physics, Southwest University, Chongqing 400715, China
  2. State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Abstract

An improved radio-over-fiber (ROF) system based on optical carrier suppression modulation (OCS) is presented. In this ROF system, through adopting frequency down-conversion of the down-sideband, a millimeter (mm) wave emitted signal, whose frequency is higher than twice of the radio frequency (RF) which is used to drive the dual-arm LiNbO3 Mach-Zehnder intensity modulator (DLN-MZI) in OCS, can be obtained at the base station. Meantime, self-mixing technique has been used to realize frequency down-conversion of the up-stream link, and then the base station can be further simplified due to that the local oscillation (LO) is not necessary. For 2.5 Gb/s down-link data stream, the transmission characteristics of this system have been investigated. The results show that the effect of the fiber chromatic is not serious, after transmission over 140 Km single-mode fiber, the eye diagram is still open and the power penalty is about 0.86 dBm.

Keywords

Optical wireless communication, Radio-over-fiber (ROF), Optical carrier suppression modulation, Optical mm-wave.

Citation

YIN-CHUAN ZHAO, ZHENG-MAO WU, GUANG-QIONG XIA, An improved radio-over-fiber communication system based on optical carrier suppression, Optoelectronics and Advanced Materials - Rapid Communications, 3, 8, August 2009, pp.791-794 (2009).

Submitted at: June 2, 2009

Accepted at: July 31, 2009