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Optical Review

, Volume 25, Issue 2, pp 264–270 | Cite as

Ultraflat and broadband optical frequency comb generator based on cascaded two dual-electrode Mach–Zehnder modulators

  • Kun Qu
  • Shanghong Zhao
  • Xuan Li
  • Qinggui Tan
  • Zihang Zhu
Regular Paper
  • 158 Downloads

Abstract

A novel scheme for the generation of ultraflat and broadband optical frequency comb (OFC) is proposed based on cascaded two dual-electrode Mach–Zehnder modulators (DE-MZM). The first DE-MZM can generate a four-comb-line OFC, then the OFC is injected into the second DE-MZM as a carrier, which can increase the number of comb lines. Our modified scheme finally can generate a broadband OFC with high flatness by simply modifying the electrical power and the bias voltage of the DE-MZM. Theoretical analysis and simulation results reveal that a 16-comb-line OFC with a frequency spacing that two times the frequency of the RF signal can be obtained. The power fluctuation of the OFC lines is 0.48 dB and the unwanted-mode suppression ratio (UMSR) can reach 16.5 dB. Additionally, whether the bias drift of the DE-MZMs has little influence on the power fluctuation is also analyzed. These results demonstrate the robustness of our scheme and verify its good accuracy and high stability with perfect flatness.

Keywords

Optical frequency comb (OFC) Dual-electrode Mach–Zehnder modulator Low power fluctuation Microwave photonics 

Notes

Acknowledgements

This research was supported by the National Natural Science Foundation of China (Nos. 61231012 and 61401502).

References

  1. 1.
    Cundiff, S.T., Weiner, A.M.: Optical arbitrary waveform generation. Nat. Photonics 4(11), 760–766 (2010)ADSCrossRefGoogle Scholar
  2. 2.
    Sherman, A., Horowitz, M., Zach, S.: Optical under-sampling by using abroadband optical comb with a high average power. Opt. Express 13, 15502–15513 (2014)ADSCrossRefGoogle Scholar
  3. 3.
    Schnatz, H., Lipphardt, B., Degenhardt, C., Peik, E., Schneider, T., Sterr, U., et al.: Optical frequency measurements using fs-comb generators. IEEE Trans. Instrum. Meas. 54(2), 750–753 (2005)CrossRefGoogle Scholar
  4. 4.
    Chen, C., Zhang, C., Zhang, W., Jin, W., Qiu, K.: Scalable and reconfigurable generation of flat optical comb for WDM-based next-generation broadband optical access networks. Opt. Commun. 321, 16–22 (2014)ADSCrossRefGoogle Scholar
  5. 5.
    Stefan, P., Norman, W., Thomas, S.: Flat, rectangular frequency comb generation with tunable bandwidth and frequency spacing. Opt. Lett. 39(6), 1637–1640 (2014)CrossRefGoogle Scholar
  6. 6.
    Diddams, S.A.: The evolving optical frequency comb. J. Opt. Soc. Am. B 27(11), B51-B62 (2010)CrossRefGoogle Scholar
  7. 7.
    Wiberg, A.O.J., Liu, L., Tong, Z.: Photonic preprocessor for analog-to-digital-converter using a cavity-less pulse source. Opt. Express. 20, 419–427 (2012)CrossRefGoogle Scholar
  8. 8.
    Tang, J., Sun, J., Zhao, L., Chen, T., Huang, T., Zhou, Y.: Tunable multiwavelength generation based on Brillouin–erbium comb fiber laser assisted by multiple four-wave mixing processes. Opt. Express 19(5), 14682–14689 (2011)ADSCrossRefGoogle Scholar
  9. 9.
    Zhang, F., Wu, J., Li, Y., Lin, J.: Flat optical freqeuncy comb generation and its application for optical waveform generation. Opt. Commun. 290(1), 37–42 (2013)ADSCrossRefGoogle Scholar
  10. 10.
    Shang, L., Wen, A., Lin, G.: Optical frequency comb generation using two cascaded intensity modulators. J. Opt. 16(3), 035401 (2014)ADSCrossRefGoogle Scholar
  11. 11.
    Shang, L., Wen, A., Lin, G., Gao, Y.: A flat and broadband optical frequency comb with tunable bandwidth and frequency spacing. Opt. Commun. 331, 262–266 (2014)ADSCrossRefGoogle Scholar
  12. 12.
    Metcalf, A.J., Torres-Company, V., Leaird, D.E., Weiner, A.M.: High-power broadly tunable electrooptic frequency comb generator. IEEE J. Sel. Top. Quantum Electron. 19(6), 3500306–3500311 (2013)CrossRefGoogle Scholar
  13. 13.
    Wang, Q., Huo, L., Xing, Y., Zhou, B.: Ultra-flat optical frequency comb generator using a single-driven dual-parallel Mach–Zehnder modulator. Opt. Lett. 39(10), 3050–3053 (2014)ADSCrossRefGoogle Scholar
  14. 14.
    Zhang, F., Ge, X., Pan, S.: A two-stage optical frequency comb generator based on polarizationmodulators and a Mach–Zehnder interferometer. Opt. Commun. 354, 94–102 (2015)ADSCrossRefGoogle Scholar
  15. 15.
    Hmood, J.K., Emami, S.D., Noordin, K.A.: Optical frequency comb generation based on chirping of Mach–Zehnder modulators. Opt. Commun. 344, 139–146 (2015)ADSCrossRefGoogle Scholar
  16. 16.
    He, C., Pan, S.: Ultraflat optical frequency comb generated based on cascaded polarization modulators. Opt. Lett. 37, 3834–3846 (2012)ADSCrossRefGoogle Scholar

Copyright information

© The Optical Society of Japan 2018

Authors and Affiliations

  • Kun Qu
    • 1
  • Shanghong Zhao
    • 1
  • Xuan Li
    • 1
  • Qinggui Tan
    • 2
  • Zihang Zhu
    • 1
  1. 1.Air Force Engineering UniversityXi’anChina
  2. 2.China Academy of Space TechnologyXi’anChina

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