전기전자학회논문지 (Journal of IKEEE)

  • 제19권1호
  • /
  • Pages.27-32
  • /
  • 2015
  • /
  • 1226-7244(pISSN)
  • /
  • 2288-243X(eISSN)
한국전기전자학회 (Institute of Korean Electrical and Electronics Engineers)
권호 표지
DOI QR코드

DOI QR Code

A Flexible and Tunable Microwave Photonic Filter Based on Adjustable Optical Frequency Comb Source

  • 투고 : 2015.01.22
  • 심사 : 2015.02.11
  • 발행 : 2015.03.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A flexible and tunable microwave photonic filter based on adjustable optical frequency comb source is demonstrated. We use a combination of a dual parallel Mach Zehnder modulator and an intensity modulator to generate fifteen comb lines with proper weights to implement a desired filter. The optical comb weights, corresponding to the tap coefficients of the filter, are flexibly changed by adjusting the operation parameters of the modulators. The achieved bandwidth and stopband attenuation of the tunable filter are 0.7 GHz and 20 dB, respectively. In addition, we overcome the undesired low frequency suppression appeared in a conventional scheme by applying a dual parallel Mach Zehnder modulator for single sideband suppressed carrier modulation.

키워드

참고문헌

  1. J. Capmany, B. Ortega, D. Pastor, and S. Sales, "Discrete-time optical processing of microwave signals," IEEE J. Lightw. Technol., pp. 702-723, February 2005.
  2. J. Capmany, B. Ortega, and D. Pastor, "A tutorial on microwave photonic filters," IEEE J. Lightw. Technol., vol. 24, no. 1, pp. 201-229, January 2006. https://doi.org/10.1109/JLT.2005.860478
  3. Y. Yan, and J. Yao, "A tunable photonic microwave filter with a complex coefficient using an optical RF phase shifter," IEEE Photon. Technol. Lett., vol. 19, no. 19, pp. 1472-1474, October 2007. https://doi.org/10.1109/LPT.2007.903753
  4. J. Capmany, D. Pastor, A. Martinez, B. Otega, and S. Sales, "Microwave photonic filters with negative coefficients based on phase inversion in an electro-optic modulator," Optics Letters, vol. 28, no. 16, pp. 1415-1417, August 2003. https://doi.org/10.1364/OL.28.001415
  5. J. Capman, J. Mora, B. Ortega, and D. Pastor, "Microwave photonic filters using low-cost sources featuring tunability, reconfigurability and negative coefficients," Optics Express, vol. 13, no. 5, pp. 1412-1416, March 2005. https://doi.org/10.1364/OPEX.13.001412
  6. M. Song, C. M. Long, R. Wu, D. Seo, D. E. Leaird, and A. M. Weiner, "Reconfigurable and tunable flat-top microwave photonics filters utilizing optical frequency combs," IEEE Photon. Technol. Lett., vol. 23, no. 21, pp. 1618-1620, November 2011. https://doi.org/10.1109/LPT.2011.2165209
  7. R. Wu, V. R. Supradeepa, C. M. Long, D. E. Leaird, and A. M. Weiner, "Generation of very flat optical frequency combs from continuous-wave lasers using cascaded intensity and phase modulators driven by tailored radio frequency waveforms," Optics Letters, vol. 35, no. 19, pp. 3234-3236, October 2010. https://doi.org/10.1364/OL.35.003234
  8. E. Hamidi, D. E. Leaird, and A. M. Weiner, "Tunable programmable microwave photonic filters based on an optical frequency comb," IEEE Trans. Microw. Theory Tech., vol. 58, no. 11, pp. 3269-3278, November 2010. https://doi.org/10.1109/TMTT.2010.2076970
  9. T. T. Tran and D. Seo, "Low frequency impairment by SSB-SC modulation in microwave photonic filters," KICS-KVIWIC 2014, pp. 33-36, December, 2014.
  10. I. L. Gheorma and G. K. Gopalakrishnan, "Flat frequency comb generation with an integrated dual-parallel modulator," IEEE Photonics Technology Letters, vol. 19, no. 13, pp. 1011-1013, 2007. https://doi.org/10.1109/LPT.2007.898766