TY - JOUR
T1 - Influence of the modulation index of Mach-Zehnder modulator on RoF link with ASK millimeter-wave signal
AU - Ma, Jianxin
AU - Yu, Jianjun
AU - Yu, Chongxiu
AU - Xin, Xiangjun
AU - Huang, Huiying
PY - 2009/2
Y1 - 2009/2
N2 - In this paper, the influence of the modulation index of LiNbO3 Mach-Zehnder modulator on the radio over fiber (RoF) link based on single sideband (SSB) optical millimeter (mm)-wave with ASK signal is theoretically and numerically investigated. Our investigation shows that there exists an optimal modulation index to generate the SSB optical mm-wave with a maximal RF photocurrent. Although the fiber dispersion distorts the code form and degrades the performance of the RF signal demodulated from the SSB optical mm-wave after fiber transmission, it does not cause the closure of the eye diagram. However, the influence of the fiber dispersion becomes more obvious as the modulation index increases. For the duplex RoF link with the optical carrier of the uplink recovered from the downlink, a larger modulation index of the downlink causes a worse crosstalk from the downlink to the uplink.
AB - In this paper, the influence of the modulation index of LiNbO3 Mach-Zehnder modulator on the radio over fiber (RoF) link based on single sideband (SSB) optical millimeter (mm)-wave with ASK signal is theoretically and numerically investigated. Our investigation shows that there exists an optimal modulation index to generate the SSB optical mm-wave with a maximal RF photocurrent. Although the fiber dispersion distorts the code form and degrades the performance of the RF signal demodulated from the SSB optical mm-wave after fiber transmission, it does not cause the closure of the eye diagram. However, the influence of the fiber dispersion becomes more obvious as the modulation index increases. For the duplex RoF link with the optical carrier of the uplink recovered from the downlink, a larger modulation index of the downlink causes a worse crosstalk from the downlink to the uplink.
KW - Optical millimeter (mm)-wave
KW - Radio over fiber (RoF)
KW - Single sideband (SSB) modulation
UR - http://www.scopus.com/inward/record.url?scp=48649109924&partnerID=8YFLogxK
U2 - 10.1016/j.optlastec.2008.05.001
DO - 10.1016/j.optlastec.2008.05.001
M3 - Article
AN - SCOPUS:48649109924
SN - 0030-3992
VL - 41
SP - 11
EP - 16
JO - Optics and Laser Technology
JF - Optics and Laser Technology
IS - 1
ER -