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- W2000987935 abstract "In typical radio-over-fiber (RoF) systems, sub-carrier multiplexing is achieved by using directly modulated laser diode (LD). However, the conventional LD for optical communication system has non-linear characteristics such as, 3rd order intermodulation distortion (IMD3), which degrade overall analog RoF system performance. In addition, when the multi-channel input signals are modulated directly, 5th order intermodulation distortion (IMD5) signals act as a noise on overall systems. In this paper, we experimentally demonstrate an opto-electrical predistortion optical transmitter to enhance IMD3 & IMD5 for radio-over-fiber systems. To reduce the 3rd and 5th order intermodulation (IM3 & IM5), master laser diode (MLD) and slave laser diode (SLD) with similar performance are used, and the matching circuits of two LDs are designed with equal properties. The amplitude and phase balances as well as bias current of two LDs are carefully considered for the enhancements. The experimental results show that reductions of about 30 dB in the IM3 and about 12 dB in the IM5 are achieved at 2.2 GHz." @default.
- W2000987935 created "2016-06-24" @default.
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- W2000987935 date "2010-01-23" @default.
- W2000987935 modified "2023-10-18" @default.
- W2000987935 title "Cancellation of the IMD3 and IMD5 using opto-electrical predistortion optical transmitter for radio-over-fiber systems" @default.
- W2000987935 doi "https://doi.org/10.1117/12.841749" @default.
- W2000987935 hasPublicationYear "2010" @default.
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