A new optoelectronic frequency down-conversion method for radio-on-fiber (RoF) uplink transmission is demonstrated by using an electroabsorption modulator, which down-converts uplink millimeter-wave signals into optical intermediate frequency (IF) using remotely fed optical local oscillator signals. Using this optoelectronic frequency down-converter, an RoF uplink is demonstrated in which quadrature-phase-shift keying uplink data signals in 60-GHz band are frequency down-converted to the 500-MHz optical IF signals and transmitted to the central station.
Bibliographical noteFunding Information:
Manuscript received October 4, 2004; revised December 21, 2004. This work was supported by the Ministry of Science and Technology of Korea through the National Research Laboratory Program. J.-H. Seo, C.-H. Choi, and W.-Y. Choi are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: firstname.lastname@example.org). Y.-S. Kang, Y.-D. Chung, and J. Kim are with the Electronics and Telecommunications Research Institute, Daejeon 305-350, Korea. Digital Object Identifier 10.1109/LPT.2005.844562 Fig. 1. Schematic explanation for the proposed frequency down-conversion technique.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering