Title :
Novel Optical Vector Signal Generation With Carrier Suppression and Frequency Multiplication Based on a Single-Electrode Mach–Zehnder Modulator
Author :
Chun-Ting Lin ; Wen-Jr Jiang ; Chen, J. ; Po-Tsung Shih ; Peng-Chun Peng ; Er-Zih Wong ; Sien Chi
Author_Institution :
Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu
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.
Keywords :
optical modulation; phase shift keying; radio-over-fibre; signal generators; bandwidth 15 GHz; bandwidth 5 GHz; byte rate 1.25 GByte/s; carrier suppression; frequency multiplication; optical vector signal generation; phase-shift keying; photodetection; single-electrode Mach-Zehnder modulator; Fading; Frequency conversion; Optical filters; Optical modulation; Optical receivers; Optical sensors; Phase shift keying; RF signals; Radio frequency; Signal generators; Mach–Zehnder modulator (MZM); optical vector signal; radio-over-fiber (ROF);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2006254
