Title :
A Radio-Over-Fiber System With Frequency 12-Tupling Optical Millimeter-Wave Generation to Overcome Chromatic Dispersion
Author :
Zihang Zhu ; Shanghong Zhao ; Yongjun Li ; Xingchun Chu ; Xiang Wang ; Guhao Zhao
Author_Institution :
Sch. of Inf. & Navig. Coll., Air Force Eng. Univ., Xi´an, China
Abstract :
A radio-over-fiber system with frequency 12-tupling optical millimeter-wave (mm-wave) generation using an integrated nested Mach-Zehnder modulator (MZM) is proposed and demonstrated by simulation. Through properly adjusting the direct current bias voltages of two sub-MZMs, the RF local oscillator (LO) voltages and phases, and the gain of base-band signal, the frequency 12-tupling optical mm-wave with data only carried by one sixth-order sideband is generated. As the signal is transmitted along the fiber, there is no periodical fading and bit walk-off effect caused by chromatic dispersion. The eye diagrams stay open even when the signal is transmitted over 60 km and the power penalty is 0.67 dB at a BER of 10-10. Furthermore, it is also proved to be valid that the BER is insensitive to the deviation of modulator extinction ratio and RF LO voltage.
Keywords :
error statistics; extinction coefficients; integrated optoelectronics; microwave photonics; millimetre wave generation; millimetre wave oscillators; optical communication equipment; optical fibre dispersion; optical modulation; radio-over-fibre; RF LO voltage; RF local oscillator phase; RF local oscillator voltage; base-band signal gain; bit walk-off effect; chromatic dispersion; direct current bias voltages; eye diagrams; frequency 12-tupling optical millimeter-wave generation; integrated nested Mach-Zehnder modulator; mm-wave generation; modulator extinction ratio; power penalty; radio-over-fiber system; signal transmission; sixth-order sideband; sub-MZM; Adaptive optics; Bit error rate; Optical fibers; Optical filters; Optical modulation; Radio frequency; 12-tupling frequency; Radio-over-fiber (RoF) system; chromatic dispersion; integrated nested Mach-Zehnder modulator; optical millimeter-wave;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2013.2281664
