Hong-qiao Cheng,Li-xia Xi,Jia-chuan Lin,Xiao-guang Zhang,Xia Zhang,Jian-rui Li.Generation of multi-carrier based on a recirculating frequency shifter with delay interferometer[J].Optoelectronics Letters,2013,9(6):418-420 |
Generation of multi-carrier based on a recirculating frequency shifter with delay interferometer |
Author Name | Affiliation | E-mail | Hong-qiao Cheng | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | | Li-xia Xi | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | xilixia@bupt.edu.cn | Jia-chuan Lin | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | | Xiao-guang Zhang | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | | Xia Zhang | Key Laboratory of Optical Communications Science & Technology in Shandong Province of China, Liaocheng University, Liaocheng, 252000, China | | Jian-rui Li | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China | |
|
Abstract: |
Recirculating frequency shifter (RFS) can generate stable multi-carrier, but the carrier-to-noise-ratio (CNR) is limited because noise is accumulated round by round in the recirculation loop structure. A modified RFS with a delay interferometer (DI) is proposed in this paper. The DI can suppress the accumulated noise, and enhance the CNR of multi-carrier. The principle of the generation of high quality multi-carrier based on an RFS with DI is analyzed theoretically. 50 stable carriers with spacing of 10.7 GHz are successfully generated. The flatness of 50 stable carriers is 3 dB, and the CNR is 43 dB which is increased by 3 dB compared with the structure without DI. |
Hits: 4219 |
Download times: 0 |
This work has been supported by the National Natural Science Foundation of China (No:61205065), the Specialized Research Fund for the Doctoral Program of Higher Education of China (No.20110005110014), and the Provincial Natural Foundation of Shandong (No.ZR2010FM043). |
View Full Text Download reader |
|
|
|