Title :
Optical Single Sideband Modulation With Tunable Optical Carrier-to-Sideband Ratio
Author :
Yamei Zhang ; Fangzheng Zhang ; Shilong Pan
Author_Institution :
Key Lab. of Radar Imaging & Microwave Photonics, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A novel approach to realize optical single sideband (OSSB) modulation with tunable optical carrier-to-sideband ratio (OCSR) is proposed and demonstrated based on cascaded polarization modulators (PolMs). In the proposed scheme, OSSB polarization modulation is first obtained by driving two cascaded PolMs with two RF signals that are 90 ° out of phase. Then, by placing a polarizer after the PolMs, an OSSB-modulated signal with a tunable OCSR is obtained by adjusting the polarization direction of the polarizer. An experiment is carried out. An OSSB signal with a tunable OCSR from -26 to 46 dB is achieved. The operation bandwidth covers the frequency range of 5-35 GHz.
Keywords :
light polarisation; microwave photonics; optical communication equipment; optical modulation; optical polarisers; optical tuning; radio-over-fibre; OSSB polarization modulation; OSSB signal modulation; cascaded polarization modulators; frequency 5 GHz to 35 GHz; gain -26 dB to 46 dB; optical single sideband modulation; polarizer; radiofrequency signals; tunable optical carrier-to-sideband ratio; Amplitude modulation; Optical fibers; Optical filters; Optical modulation; Optical polarization; Microwave photonics; polarization modulation; single sideband modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2301893
