Analysis of the stability and optimizing operation of the single-side-band modulator based on recirculating frequency shifter used for the T-bit/s optical communication transmission

作者：Li, Jianping^*; Li, Xuan; Zhang, Xiaoguang; Tian, Feng; Xi, Lixia

来源：Optics Express, 2010, 18(17): 17597-17609.

DOI：10.1364/OE.18.017597

The stability of single-sideband (SSB) modulator based recirculating frequency shifter (RFS) is analyzed theoretically. The optimum radio frequency (RF) drive peak-to-peak voltage used to drive the modulator is studied with considering the amplified spontaneous emission (ASE) noise of optical amplifier and crosstalk so as to obtain a maximum overall effective optical signal to noise ratio (OSNR) which is defined to quantify the quality of generated tones. Small desired tones number and lower RF peak-to-peak voltage can reduce the crosstalk effectively. While the trade-off should be considered since the larger desired tones number it is, the higher optimum drive voltage should be used when the SSB-based RFS reached the maximum OSNR. The theoretical results show that the optimum operation condition is helpful to improve the performance of RFS which can be a good application for the T-bit/s optical transmission in practice.

• 出版日期2010-8-16
• 单位北京科技大学; 北京邮电大学