Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Tunable Photonic Microwave Band-pass Filter with High-resolution Using XGM Effect of an RSOA

  • Kwon, Won-Bae (Honam Research Center, Electronics and Telecommunications Research Institute (ETRI)) ;
  • Lee, Chung Ghiu (Department of Electronic Engineering, Chosun University) ;
  • Seo, Dongjun (School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST)) ;
  • Park, Chang-Soo (School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST))
  • Received : 2018.10.17
  • Accepted : 2018.11.16
  • Published : 2018.12.25
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Abstract

We propose and experimentally demonstrate a simple tunable photonic microwave band-pass filter with high resolution using a reflective semiconductor optical amplifier (RSOA) and an optical time-delay line. The RSOA is used as a gain medium for generating cross-gain modulation (XGM) effect as well as an optical source. The optical source provides narrow spectral width by self-injection locking the RSOA in conjunction with a partial reflection filter with specific center wavelength. Then, when the RSOA is operated in the saturation region and the modulated recursive signal is injected into the RSOA, the recursive signal is inversely copied to the injection locked optical source due to the XGM effect. Also, the tunability of the passband of the proposed microwave filter is shown by controlling an optical time-delay line in a recursive loop.

Keywords

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FIG. 1. Schematic diagram of the proposed filter using the RSOA.

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FIG. 2. Experimental setup of the proposed photonic microwave filter.

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FIG. 3. Measured optical spectrum of the self-injection locked light generated by the RSOA.

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FIG. 4. Non-inverted and inverted sine waves measured at port 3 of the circulator.

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FIG. 5. Frequency responses of the proposed photonic microwave filter (Dashed: simulation. Solid: measurement).

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FIG. 6. Measured frequency responses of the proposed photonic microwave filter corresponding to the change of the time-delay using the optical time-delay line.

References

  1. J. Capmany, B. Ortega, D. Pastor, and S. Sales, "Discretetime optical processing of microwave signals," J. Lightw. Technol. 23, 702-723 (2006).
  2. J. Capmany, B. Ortega, and D. Pastor, "A tutorial on microwave photonic filters," J. Lightw. Technol. 24, 201-229 (2006). https://doi.org/10.1109/JLT.2005.860478
  3. C. K. Oh, T.-Y. Kim, S. H. Baek, and C.-S. Park, "Photonic microwave notch filter using cross polarization modulation in highly nonlinear fiber and polarization-dependent optical delay in high birefringence fiber," Opt. Express 14, 6628- 6633 (2006). https://doi.org/10.1364/OE.14.006628
  4. C. K. Oh, T.-Y. Kim, and C.-S. Park, "All-optical transversal filter with tap doubling and negative coefficients based on polarization modulation," Opt. Express 15, 5898-5904 (2007). https://doi.org/10.1364/OE.15.005898
  5. S.-H. Heo, J. Kim, C. G. Lee, and C.-S. Park, "Tunable photonic microwave delay line filter based on Fabry-Perot laser diode," Curr. Opt. Photon. 2, 27-33 (2018).
  6. R. K. Jeyachitra and R. Sukanesh, "Highly selective and tunable microwave photonic filter using parallel Fabry-Perot filters for universal mobile telecommunications system noise and interference suppression," IET Commun. 5, 1123-1128 (2011). https://doi.org/10.1049/iet-com.2010.0435
  7. E. J. Norberg, R. S. Guzzon, J. S. Parker, L. A. Johansson, and L. A. Coldren, "Programmable photonic microwave filters monolithically integrated in InP-InGaAsP," J. Lightw. Technol. 29, 1611-1619 (2011).
  8. D. B. Hunter and R. A. Minasian, "Photonic signal processing of microwave signals using active-fiber Bragg-grating-pair structure," IEEE Trans. Microw. Theory Tech. 45, 1463-1466 (1997). https://doi.org/10.1109/22.618455
  9. N. You and R. A. Minasian, "Novel photonic recursive signal processor with reduced phase-induced intensity noise," J. Lightw. Technol. 24, 2558-2563 (2006). https://doi.org/10.1109/JLT.2006.874644
  10. E. H. W. Chan. "Tunable coherence-free microwave photonic bandpass filter based on double cross gain modulation technique," Opt. Express, 20, 22987-22996 (2012). https://doi.org/10.1364/OE.20.022987
  11. L. Q. Guo and M. J. Connelly, "A novel approach to all-optical wavelength conversion by utilizing a reflective semiconductor optical amplifier in a co-propagation scheme," Opt. Commun. 281, 4470-4473 (2008). https://doi.org/10.1016/j.optcom.2008.04.054
  12. W.-B. Kwon, Y.-K. Choi, D. Lee, G.-Y. Kim, and C.-S. Park, "A tunable photonic microwave notch filter with a negative coefficient using nonlinear behavior of a reflective semiconductor optical amplifier," Microwave Opt. Technol. Lett. 56, 1328-1331 (2014). https://doi.org/10.1002/mop.28315