Generation of coherent and frequency-lock multi-carriers using cascaded phase modulators and recirculating frequency shifter for Tb/s optical communication

Junwen Zhang; Nan Chi; Jianjun Yu; Yufeng Shao; Jiangbo Zhu; Bo Huang; Li Tao

doi:10.1364/OE.19.012891

Generation of coherent and frequency-lock multi-carriers using cascaded phase modulators and recirculating frequency shifter for Tb/s optical communication

Opt Express. 2011 Jul 4;19(14):12891-902. doi: 10.1364/OE.19.012891.

Authors

Junwen Zhang¹, Nan Chi, Jianjun Yu, Yufeng Shao, Jiangbo Zhu, Bo Huang, Li Tao

Affiliation

¹ Department of Communication Science and Engineering, Fudan University, Shanghai, China.

PMID: 21747441
DOI: 10.1364/OE.19.012891

Abstract

We investigate to generate coherent and frequency-lock optical multi-carriers by using cascaded phase modulators and recirculating frequency shifter (RFS) based on an EDFA loop. The phase and amplitude relation of RF signals on two cascaded phase modulators and the impact of EDFA gain are investigated. Experimental results are in good agreement with the theoretical analysis. The performance of 113 coherent and frequency-lock subcarriers with tone-to-noise ratio larger than 26dB and amplitude difference of 5dB obtained after a tilt filter covering totally 22.6nm shows that this scheme is a promising technique for the coming Tb/s optical communication.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Optical Devices*
Reproducibility of Results
Sensitivity and Specificity
Telecommunications / instrumentation*
Terahertz Radiation