Title :
Simultaneous Transmission of Wireless and Wireline Services Using a Single 60-GHz Radio-Over-Fiber Channel by Coherent Subcarrier Modulation
Author :
Fan, Shu-Hao ; Chien, Hung-Chang ; Hsueh, Yu-Ting ; Chowdhury, Arshad ; Yu, Jianjun ; Chang, Gee-Kung
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We proposed and experimentally demonstrated a novel hybrid subcarrier modulation (H-SCM) technique to generate a spectral-efficient 60-GHz optical millimeter-wave (mm-wave) that carries independent 2.5-Gb/s wireless and 10-Gb/s wireline signals using intensity and phase modulation, respectively. The frequency beating components of the 60-GHz channel due to interleaved and imbalanced optical path in H-SCM are numerically analyzed and experimentally measured in terms of timing jitter and amplitude fluctuation. The generated 60-GHz optical mm-wave signal using H-SCM with phase noise variance of about 0.5 is demonstrated in a radio-over-fiber testbed propagating through a combined distance of 25-km fiber and 4-m free space. The power penalties for the received wireless and wireline signals are 1 and 0.2 dB at 10-9 bit-error rate, respectively.
Keywords :
electro-optical modulation; error statistics; intensity modulation; millimetre wave generation; optical noise; phase modulation; phase noise; radio-over-fibre; timing jitter; amplitude fluctuation; bit rate 10 Gbit/s; bit rate 2.5 Gbit/s; bit-error rate; distance 25 km; distance 4 m; fiber propagation; frequency 60 GHz; frequency beating components; hybrid coherent subcarrier modulation; intensity modulation; optical mm-wave signal generation; phase modulation; phase noise variance; radio-over-fiber channel; spectral-efficient optical millimeter-wave generation; timing jitter; wireless services; wireline services; Millimeter-waves (mm-waves); optical access network; radio-over-fiber (RoF);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2023226
