Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2022. №12
ContentsFull text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2022.12.7
Generation of ultrawideband microwave signals with Laser diode self-heterodyning in michelson interferometer
K. Mikitchuk, A. Lebedev, A. Chizh
State scientific and production association “Optics, Optoelectronics and Laser Technology”
of National Academy of Sciences of Belarus68-1, Nezavisimosti ave., Minsk, Belarus, 220072
The paper was received December 21, 2022
Abstract. In this paper, microwave photonic technique of ultrawideband linearly frequency modulated signals generation is proposed. The proposed method based on direct modulation of the laser diode current, which provides a periodic change in the emission frequency. The Michelson interferometer summarizes laser signal and its replica with time delay exceeding 10 ms, which, in turn, is defined by time difference between arms. Optoelectronic conversion is performed in high-speed high-power photodiode. The proposed approach makes it possible to generate microwave signals with linear frequency modulation in the frequency range up to several tens of gigahertz by means of laser pump current modulation in the frequency range less than 100 MHz. The method of ultra-wideband microwave signals generation is implemented using a Michelson fiber-optic interferometer with Faraday mirrors. Such interferometer topology provides a doubling of the path length, and reduced gyroscopic effects due to a counter-propagating double pass. Changing the parameters of the generated microwave ultrawideband signals with frequency modulation is achieved by pump current shape and amplitude control. It is also proposed to use real-time oscilloscope without need of changing of the internal structure of such generator to pre-tune it. Time-frequency analysis is used to extract frequency versus time dependence. By so doing, direct impulse response estimation is performed. This method allows to characterize laser diode frequency response for arbitrary microwave waveform generation by means of pump current waveform calculation from experimental data.
Key words: microwave photonics, generation of ultrawideband microwave signals, laser diode, self-heterodyning, fiber-optic Michelson interferometer.
Corresponding author: Mikitchuk Kiryl, mikitchuk@oelt.basnet.by
References
1. Chi H., Wang C., Yao J. Photonic generation of wideband chirped microwave waveforms. IEEE Journal of Microwaves. 2021. V.1. №3. P.787-803. https://doi.org/10.1109/JMW.2021.3085868
2. Pan S., Zhang Y. Microwave photonic radars. Journal of Lightwave Technology. 2020. V.38. №19. P.5450-5484. https://doi.org/10.1109/JLT.2020.2993166
3. Luo X., Wang A., Wo J., Wang Y., Fu J., Zhu Y., Zhang J., Cong W., Liu R., Yang H., Yu L. Microwave photonic video imaging radar with widely tunable bandwidth for monitoring diverse airspace targets. Optics Communications. 2019. V.451. P.296-300. https://doi.org/10.1016/j.optcom.2019.06.073
4. Serafino G., Scotti F., Lembo L., Hussain B., Porzi C., Malacarne A., Maresca S., Onori D., Ghelfi P., Bogoni A. Toward a new generation of radar systems based on microwave photonic technologies. Journal of Lightwave Technology. 2019. V.37. №2. P.643-650. https://doi.org/10.1109/JLT.2019.2894224
5. Schuetz C., Harrity C., Schneider G., Murakowski J., Shi S., Deroba J., Prather D. A promising outlook for imaging radar. Imaging flash radar realized using photonic spatial beam processing. IEEE Microwave Magazine. 2018. V.19. №3. P.91-101. https://doi.org/10.1109/MMM.2018.2801639
6. Herrera L., Ribeiro R., Jabulka V., Tovar P., von der Weid J. Photonic generation and transmission of linearly chirped microwave pulses with high TBWP by self-heterodyne technique. Journal of Lightwave Technology. 2018. V.36. №19. P.4408-4415. https://doi.org/10.1109/JLT.2018.2844099
7. Tovar P., Herrera L., Ribeiro R., von der Weid J. Photonic generation of NLFM microwave pulses from DFB-laser chirp. IEEE Photonics Technology Letters. 2019. V.31. №17. P.1417-1420. https://doi.org/10.1109/LPT.2019.2929709
8. Tovar P., Herrera L., von der Weid J. Time-resolved spectroscopy for laser chirp characterization and self-heterodyne generation of apodized-NLFM microwave pulses. Proceedings of International Topical Meeting on Microwave Photonics. 2018. P.1-4. https://doi.org/10.1109/MWP.2018.8552851
9. Aslund M., Michie A., Canning J., Holdsworth J., Fleming S. Comparison between a Mach-Zender interferometer and a Michelson interferometer employing Faraday mirrors for delayed self-heterodyne interferometry. 35th Australian Conference on Optical Fibre Technology. 2010. P.1-4. https://doi.org/10.1109/ACOFT.2010.5929884
10. Pistoni N., Martinelli M. Polarization noise suppression in retracing optical fiber circuits. Optics Letters. 1991. V.16. №10. P.711-713. https://doi.org/10.1364/OL.16.000711
11. Malyshev S., Chizh A., Vasileuski Y. High-power InGaAs/InP partially depleted absorber photodiodes for microwave generation. Journal of Lightwave Technology. 2008. V.26. №15. P.2732-2739. https://doi.org/10.1109/JLT.2008.927594
12. Mikitchuk K., Chizh A., Malyshev S. Noise and gain of an erbium-doped fiber amplifier for delay-line optoelectronic oscillator. IEEE International Conference on Noise and Fluctuations. 2017. P.1-4. https://doi.org/10.1109/ICNF.2017.7985957
13. Oberlin T., Sylvain M., Perrier V. The Fourier-based synchrosqueezing transform. IEEE International Conference on Acoustics, Speech, and Signal Processing. 2014. P.315-319. https://doi.org/10.1109/ICASSP.2014.6853609
For citation:
Mikitchuk K., Lebedev A., Chizh A. Generation of ultrawideband microwave signals with laser diode self-heterodyning in Michelson interferometer. Zhurnal radioelektroniki [Journal of Radio Electronics] [online]. 2022. №12. https://doi.org/10.30898/1684-1719.2022.12.7 (In Russian)