Optical single sideband modulation using fiber nonlinearity and injection locked technology in radio‐on‐fiber systems

Abstract

We propose a transmission system based on stimulated Brillouin scattering (SBS) effect and injection locked distributedfeedback (DFB) laser to achieve optical single sideband (OSSB) modulation. These two kinds of technologies fall on frequency band approximately nearby 10.8 GHz to enhance OSSB signal. The first step drives radio frequency signal into modulator and uses SBS effect to enhance right sideband. The second step based on injection locked DFB laser achieves OSSB modulation. After 25-km single mode fiber transmission, we can observe the sideband power ratio > 15.81 dB and performances for bit error rate analysis with power penalty about 5.2 dB at 10 28 . Figure 7 (a) The eye diagram when system only using SBS effect to transport 25-km SMF. (b). The eye diagram when system only using DFB laser injection to transport 25-km SMF. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com] Figure 8 (a) The eye diagram at back-to-back case. (b). The eye diagram after 25-km SMF transmission. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com]ABSTRACT: We present a method based on the modal expansion approach for computing resonant modes of a high-Q optical resonator. We reconstruct both the complex eigenfrequencies and the spatial modal profiles by solving an inhomogeneous linear system excited by a current source in the resonator. V C 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:278-284, 2014; View this article online at wileyonlinelibrary.com.