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An Optical Pulse-Width Modulation Generator Using a Single-Mode Fabry-Pérot Laser Diode

  • Tran, Quoc-Hoai ;
  • Nakarmi, Bikash ;
  • Won, Yong Hyub
  • Received : 2015.02.12
  • Accepted : 2015.05.19
  • Published : 2015.06.25

Abstract

We have proposed and experimentally verified a pulse-width modulation (PWM) generator which directly generated a PWM signal in the optical domain. Output waveforms were clear at the repetition rate of 16 MHz; the duty cycle (DC) was from 14.7% to 72.1%; and the DC-control resolution was about 4.399%/dB. The PWM generator' operation principle is based on the injection-locking property of a single-mode Fabry-$P{\acute{e}}rot$ laser diode (SMFP-LD). The SMFP-LD, which has a self-locked mode wavelength at ${\lambda}_{PWM}$, was used to detect the power of the injection-locking signal (optical analog input). If the analog input power is high, the SMFP-LD is locked to the wavelength of the input signal ${\lambda}_a$ and there is no output after an optical bandpass filter (OBF). If the analog input power is low, the SMFP-LD is unlocked and there is output signal at ${\lambda}_{PWM}$ after the OBF. Thus, the SMFP-LD plus the OBF provide digital output for an analog input. The DC of the output PWM signal can be controlled by tuning the power of the analog input.

Keywords

Optical pulse width modulation;Single mode FP-LD;Injection-locking

References

  1. S. Suh, "Pulse width modulation for analog fiber-optic communications," IEEE J. Lightwave Technol. 5, 102-112 (1987). https://doi.org/10.1109/JLT.1987.1075401
  2. Z. Liu and L. Jiang, "PWM speed control system of DC motor based on AT89S51," in Proc. 2011 International Conference on Electronic and Mechanical Engineering and Information Technology (EMEIT) (Harbin University, Harbin, Heilongjiang, China, Aug. 2011), vol. 3, pp. 1301-1303.
  3. J. Flores-Arias, A. Moreno-Muoz, F. Domingo-Perez, V. Pallares-Lopez, and D. Gutierrez, "Voltage regulator system based on a PWM AC chopper converter," in Proc. IEEE International Symposium on Industrial Electronics (ISIE) (Gdansk University of Technology, Gdansk, Poland, Jun. 2011), pp. 468-473.
  4. V. Tipsuwanporn, A. Charoen, A. Numsomran, and K. Phipek, "A single-phase PWM inverter controlling base on PLL technique," in Proc. SICE Annual Conference (SICE) (Waseda University, Tokyo, Japan, Sep. 2011), pp. 1178-1183.
  5. J. Lindstrand, D. Radjen, R. Fitzgerald, A. Axholt, and H. Sjoland, "An integrated 3-level fully adjustable PWM class-D audio amplifier in 0.35 ${\mu}m$ CMOS," in Proc. NORCHIP (Tallinn, Estonia, Nov. 2008), pp. 168-171.
  6. B. Wilson and Z. Ghassemlooy, "Optical pulse width modulation for electrically isolated analogue transmission," J. Phys. E: Sci. Instrum. 18, 954 (1985). https://doi.org/10.1088/0022-3735/18/11/017
  7. R. Perez, Design of Medical Electronic Devices (Academic Press, 2002).
  8. R. McDowall, Fundamentals of HVAC Control Systems (Elsevier Science, Oxford, 2008).
  9. B. E. Danielsson, "HVDC valve with light-triggered thyristors," in Proc. International Conference on AC and DC Power Transmission 1991 (London, UK, Sep. 1991), pp. 159-164.
  10. D. Xianda, C. Englefield, P. Goud, and R. Razdan, "Four-level pulse width modulation for fiber optic communications," IEEE Transactions on Communications 30, 1958-1963 (1982). https://doi.org/10.1109/TCOM.1982.1095677
  11. Y.-I. Matsubara, J. Li, H. Yoshida, S. Shinohara, E. Tsuchiya, and H. Ikeda, "Pulse-width-modulated video signal transmission through optical fiber," in Proc. The 35th Midwest Symposium on Circuits and Systems (Washington D. C., USA, Aug. 1992), pp. 357-360.
  12. Y. D. Jeong, Y. H. Won, S. O. Choi, and J. H. Yoon, "Tunable single-mode Fabry-Pérot laser diode using a built-in external cavity and its modulation characteristics," Opt. Lett. 31, 2586-2588 (2006). https://doi.org/10.1364/OL.31.002586
  13. Q. H. Tran, B. Nakarmi, and Y. H. Won, "An optical pulse width modulation generator based on the injection-locking property of single mode FP-LD," Proc. SPIE - Optical Components and Materials X 8621, 86210C (2013).
  14. N. L. Hoang, J. S. Cho, Y. H. Won, and Y. D. Jeong, "Alloptical flip-flop with high on-off contrast ratio using two injection-locked single-mode Fabry-Pérot laser diodes," Opt. Express 15, 5166-5171 (2007). https://doi.org/10.1364/OE.15.005166
  15. B. Nakarmi, M. Rakib-Uddin, and Y. H. Won, "Realization of all-optical multi-logic functions and a digital adder with input beam power management for multi-input injection locking in a single-mode Fabry-Perot laser diode," Opt. Express 19, 14121-14129 (2011). https://doi.org/10.1364/OE.19.014121
  16. H. T. Quoc, B. Nakarmi, and Y. H. Won, "All-optical address decoder using injection-locking property of external cavity based single mode FP-LD," IEEE Photonics Journal 5, 7900811 (2013). https://doi.org/10.1109/JPHOT.2013.2259585
  17. K. Iwashita and K. Nakagawa, "Suppression of mode partition noise by laser diode light injection," IEEE J. Quantum Electron. 18, 1669-1674 (1982). https://doi.org/10.1109/JQE.1982.1071415

Acknowledgement

Supported by : Korea Evaluation Institute of Industrial Technology (KEIT)