A novel method to realize optical single sideband modulation with tunable optical carrier to sideband ratio

作者：Peng, Zhengxue; Wen, Aijun^*; Gao, Yongsheng; Tu, Zhaoyang; Chen, Wei; Zhang, Wu

来源：Microwave and Optical Technology Letters, 2017, 59(7): 1740-1743.

DOI：10.1002/mop.30623

• fiber optic communications
• optical single sideband modulation
• micro-wave photonic

An optical single sideband (OSSB) modulation method with tunable optical carrier to sideband ratio (OCSR) is proposed and experimentally demonstrated based on a dual-polarization Mach-Zehnder modulator (DPol-MZM). An orthogonally polarized double sideband (DSB) signal output from the DPol-MZM is filtered out the carrier and one sideband utilizing an optical bandpass filter (OBPF). Then the orthogonally polarized OSSB signal is transformed into a linear polarized OSSB signal by a polarizer (Pol). By changing the polarization direction of the Pol utilizing a polarization controller (PC), the tunable OCSR can be achieved. In the demonstrated experiments, an OSSB modulation is implemented over the wide microwave frequency range of 5-30 GHz. The OCSR is tuned from 230 dB to infinity. The proposed OSSB modulation method is advantageous in many respects as large tunable OCSR range, wide operation bandwidth, and simple structure.

• 出版日期2017-7
• 单位西安电子科技大学; 综合业务网理论及关键技术国家重点实验室