Chinese Optics Letters, 2013, 11 (3): 030604, Published Online: Feb. 28, 2013
All-optical format conversion of NRZ-OOK to QPSK and 16QAM signals via XPM in a SOA-MZI Download: 877次
060.2330 Fiber optics communications 230.4480 Optical amplifiers 070.4340 Nonlinear optical signal processing
Abstract
This letter proposes a scheme for the format conversion of on-off keying (OOK) signal to quadrature phase-shift keying (QPSK) and 16-ary quadrature amplitude modulation (16QAM) signals via cross-phase modulation (XPM) in a semiconductor optical amplifier (SOA). Theoretical and experimental analyses of the format conversion scheme are conducted to validate its feasibility. The phase changing is obtained because of the XPM in the SOA. The QPSK and 16QAM signals are converted from the OOK signal. The performance of the 10 Gb/s format conversion system is evaluated and discussed. The receiver sensitivities of the converted QPSK and 16QAM signals after detection are -27.25 and -23.5 dBm, respectively, at a bit error rate (BER) of 10-9.
Yueying Zhan, Min Zhang, Mintao Liu, Lei Liu, Xue Chen. All-optical format conversion of NRZ-OOK to QPSK and 16QAM signals via XPM in a SOA-MZI[J]. Chinese Optics Letters, 2013, 11(3): 030604.