Optoelectronics Letters, Volume. 9, Issue 6, 418(2013)

Generation of multi-carrier based on a recirculating frequency shifter with delay interferometer

Hong-qiao CHENG1... Li-xia XI1,*, Jia-chuan LIN1, Xiao-guang ZHANG1, Xia ZHANG2 and Jian-rui LI1 |Show fewer author(s)
Author Affiliations
  • 1State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 2Key Laboratory of Optical Communications Science & Technology in Shandong Province of China, Liaocheng University, Liaocheng 252000, China
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    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.

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    CHENG Hong-qiao, XI Li-xia, LIN Jia-chuan, ZHANG Xiao-guang, ZHANG Xia, LI Jian-rui. Generation of multi-carrier based on a recirculating frequency shifter with delay interferometer[J]. Optoelectronics Letters, 2013, 9(6): 418

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    Paper Information

    Received: Jul. 8, 2013

    Accepted: --

    Published Online: Oct. 12, 2017

    The Author Email: Li-xia XI (xilixia@bupt.edu.cn)

    DOI:10.1007/s11801-013-3124-1

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