Title :
Simultaneous Generation of Baseband and Radio Signals Using Only One Single-Electrode Mach–Zehnder Modulator With Enhanced Linearity
Author :
Chun-Ting Lin ; Wei-Ren Peng ; Peng-Chun Peng ; Chen, J. ; Cheng-Feng Peng ; Bi-Shiou Chiou ; Chi, S.
Author_Institution :
Dept. of Electron. Eng. & Inst. of Electron., Nat. Chiao-Tung Univ., Hsinchu
Abstract :
We experimentally demonstrate a simultaneous generation of baseband (BB) and RF signals, using only one single-electrode Mach-Zehnder modulator (SD-MZM) based on double-sideband with optical carrier suppression (DSBCS) scheme. With optimal modulation index (MI =V p-p/2Vpi) equal to 0.43 for driving MZM, the receiver sensitivity of the RF signal can have 1-dB improvement. Based on this result, only one SD-MZM is needed to generate optical microwaves using DSBCS scheme, thus eliminating the requirement of a high-cost dual-electrode MZM without degrading the signal performance. Following 75-km standard single-mode fiber, the power penalties of both BB and RF signals are less than 0.3 dB
Keywords :
microwave photonics; optical modulation; optical receivers; radio-over-fibre; Mach-Zehnder modulator; baseband generation; double-sideband; optical carrier suppression; optical microwave generation; optimal modulation index; power penalties; radio signals; radiofrequency signals; receiver sensitivity; single-electrode modulator; standard single-mode fiber; Amplitude modulation; Bandwidth; Baseband; Linearity; Microwave generation; Optical modulation; Optical receivers; Optical sensors; RF signals; Signal generators; Mach–Zehnder modulator (MZM); microwave; millimeter-wave (mm-wave); radio-over-fiber (RoF);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.887233
