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A band-pass microwave photonic filter based on Lyot-Sagnac filter and cascaded optical structures

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Abstract

A band-pass microwave photonic filter (MPF) based on Lyot-Sagnac filter and two cascaded optical structures is demonstrated. In the experiment, a stabilized and tunable multi-wavelength optical source is obtained by slicing the broadband optical source (BOS) with a Lyot-Sagnac filter. A standard single-mode fiber (SMF) and a fiber ring resonator are cascaded to improve the mainlobe-to-sidelobe suppression ratio (MSSR) and Q-factor of the filter. The analysis shows that MSSR and Q-factor are improved by reducing the split ratio of the coupler or increasing the length of fiber in fiber ring resonator. The results have significant guidance for MPF design by choosing appropriate devices and parameters. Based on the analyses, a band-pass filter with MSSR of 53.54 dB and Q-factor of 4048 is achieved by choosing the split ratio of 0.01, the length of SMF of 30 km and the length of fiber in fiber ring resonator of 152.27 cm.

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Authors and Affiliations

  1. Tianjin Key Lab. of Film Electronics and Communication Devices, Communication Devices and Technology Engineering Research Center, Ministry of Education, Tianjin University of Technology, Tianjin, 300384, China

    Ai-ling Zhang  (张爱玲), Cong Huang  (黄聪) & Xiao-jun Wu  (吴晓君)

Authors
  1. Ai-ling Zhang  (张爱玲)
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  2. Cong Huang  (黄聪)
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  3. Xiao-jun Wu  (吴晓君)
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Corresponding author

Correspondence to Ai-ling Zhang  (张爱玲).

Additional information

This work has been supported by the National Natural Science Foundation of China (No.61377075), the New Century Excellent Talents in University (No.NCET-07-0611), and the Middle-age and Yong Backbone Talents Training Plan in Tianjin.

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Zhang, Al., Huang, C. & Wu, Xj. A band-pass microwave photonic filter based on Lyot-Sagnac filter and cascaded optical structures. Optoelectron. Lett. 10, 5–8 (2014). https://doi.org/10.1007/s11801-014-3056-4

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  • DOI: https://doi.org/10.1007/s11801-014-3056-4

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