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4 January 2008 Transmission performance of optical millimeter wave generated by one modulator
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Abstract
In this paper, a scheme of optical millimeter (mm)-wave generation by using only one phase modulator has been investigated experimentally. To generate a mixing signal, the baseband signal is mixed with the radio frequency (RF) signal using an electric mixer. And the double-sideband (DSB) signal generated from phase modulator driven by the mixing signal is transmitted to base station via a single mode fiber. The central carrier and the first-order sideband are separated by an optical interleaver at base station. The two peak modes of the first-order sideband will beat to generate an mm-wave with a double repetitive frequency of the RF signal when they are detected by an optical receiver. The transmission performance of the optical mm-wave is analyzed. According to our research, the different delay of two first sidebands due to the fiber dispersion will lead to power loss of the mm-wave. And the duty cycle of the code is reduced. It limits the largest transmission distance of the mm-wave. In the experiment, the 20GHz RF signal generates 40GHz mm-wave and 2.5Gbps NRZ is carried by the mm-wave. For downlink connection, the power penalty is 0.2 dB after transmission over 20-km.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cheng Huang, Lin Chen, and Shuangchun Wen "Transmission performance of optical millimeter wave generated by one modulator", Proc. SPIE 6837, Information Optics and Photonics Technologies II, 68370K (4 January 2008); https://doi.org/10.1117/12.755687
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