Abstract
This investigation presents a novel modulation approach for generating optical vector signals using frequency multiplication based on double sideband with carrier suppression. A single-electrode Mach-Zehnder modulator is biased at null point with a driving signal consisting of a 10-GHz sinusoidal signal and a 5-GHz sinusoidal signal modulated with 1.25-Gb/s on-off keying, 1.25-Gb/s binary phase-shift keying data, or 625-MSym/s quadruple phase-shift keying data. After square-law photodetection, a 1.25-Gb/s radio-frequency signal at a sum frequency of 15 GHz is generated. After transmission over 50-km single-mode fiber, the power penalty of all three modulation formats is under 0.2 dB.
Original language | English |
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Pages (from-to) | 2060-2062 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 20 |
Issue number | 24 |
DOIs | |
State | Published - 15 Dec 2008 |
Keywords
- Mach-Zehnder modulator (MZM)
- Optical vector signal
- Radio-over-fiber (ROF)