Single-Sideband Modulation Based on an Injection-Locked DFB Laser in Radio-Over-Fiber Systems

Abstract

A LTE vector signal generator (OFDM 64-QAM) is generated and transmitted via RoF link. The input RF power is 0 dBm and the modulated current of DML is set to 60 mA. The EVM is tested as shown in Figure 8. As seen from the diagram, EVM is about 2% when input RF Frequency at 2 GHz with 20 M bandwidth.

Generation and transmission of 3 × 3 w-band multi-input multi-output orthogonal frequency division multiplexing-radio-over-fiber signals using micro-ring resonators

“…Transporting the W-Band MIMO signals over a single fiber will encounter severe power degradation because of fiber chromatic dispersion; therefore, the optical single side band (OSSB)+Carrier modulation technique [20] is implemented using the Mach-Zehnder modulators (MZMs) to modulate the MIMO signals (X 1 , X 2 , and X 3 ) on the three assigned carriers f 3 -f 5 , respectively, as illustrated in Fig. 4(c).…”

“…To overcome RF power degradation because of fiber dispersion, the optical single sideband with a carrier (OSSB + C) modulation technique is implemented [20]. The bit error rate (BER) calculation of overall system performance is discussed last.…”

Harmonic RF carrier generation and broadband data upconversion using stimulated Brillouin scattering

“…Recently, we have demonstrated that data upconversion with single mode modulation is more promising compared with dual mode modulation for overcoming the CSE [8]. Therefore, single mode and SSB modulation is an effective way to eliminate the CSE in RoF systems [9].…”

Optical single-sideband modulation based on FWM of SOA using electro-absorption laser

“…This phenomenon will degrade systems' performance. In order to overcome RF power degradation due to fiber dispersion, optical single sideband (OSSB) modulation technique must be implemented [2]. The fact that OSSB modulation can remove a half of the optical spectrum is expected to attain a dispersion benefit because the optical spectrum has been reduced by a factor of two.…”