title: Transmission of 20-Gb/s OFDM signals occupying 7-GHz license-free band at 60 GHz using a RoF system employing frequency sextupling optical up-conversion.
abstract: This work describes a proposed 60-GHz radio-over-fiber (RoF) system employing a frequency sextupling optical up-conversion scheme. Based on the modified single sideband modulation scheme, spectrally efficient vector signals were transmitted with no performance degradation due to dispersion-induced fading. Wavelength-division- multiplexed optical up-conversion can be realized using the proposed system. Since the required transmitter bandwidth is significantly reduced, radio-frequency components with lower bandwidth and higher reliability can be utilized. Both 13.75-Gb/s QPSK-OFDM and 20.625-Gb/s 8QAM-OFDM signals were experimentally demonstrated. After transmission over 25-km of standard single mode fiber, no significant received power penalty was observed.
authors.affiliation: Department of Photonics and Institute of Electro-Optical Engineering, National Chiao-Tung University, Hsinchu 300, Taiwan.
authors.forename: Po-Tsung
authors.initials: PT
authors.lastname: Shih
authors.forename: Chun-Ting
authors.initials: CT
authors.lastname: Lin
authors.forename: Wen-Jr
authors.initials: WJ
authors.lastname: Jiang
authors.forename: Han-Sheng
authors.initials: HS
authors.lastname: Huang
authors.forename: Jyehong
authors.initials: J
authors.lastname: Chen
authors.forename: Anthony
authors.initials: A
authors.lastname: Ng'oma
authors.forename: Michael
authors.initials: M
authors.lastname: Sauer
authors.forename: Sien
authors.initials: S
authors.lastname: Chi