DOI QR코드

DOI QR Code

Effect of the Reflectivity of Both Facets and the Phase of a Phase Tuning Section on the Yield Characteristics of a Multisection Index-Coupled DFB Laser

양 단면 반사율과 위상 조정 영역의 위상이 다중 영역 Index-Coupled DFB 레이저의 수율 특성에 미치는 영향

  • Kim, Tae-Young (School of Electronic Engineering, Soongsil University) ;
  • Ryu, Jong-In (School of Electronic Engineering, Soongsil University) ;
  • Kim, Boo-Gyoun (School of Electronic Engineering, Soongsil University)
  • 김태영 (숭실대학교 정보통신전자공학부) ;
  • 유종인 (숭실대학교 정보통신전자공학부) ;
  • 김부균 (숭실대학교 정보통신전자공학부)
  • Published : 2006.12.25

Abstract

We investigate the effect of the reflectivity of both facets and the phase of a phase tuning section on the self-pulsation (SP) characteristics of multisection index-coupled (IC) DFB lasers composed of two index-coupled DFB sections and a phase tuning section between them in terms of yield. In the case of weak coupling strength, as the reflectivity of both facets increases, the effect of reflected fields from both facets and the other DFB section on the mode characteristics of one DFB section increases. Thus the number of mode hoping increases and yield decreases for the variation of phases of both facets. In the case of strong coupling strength, as the reflectivity of both facets increases, the spatial hole burning effect increases, so that the yield decreases. The maximum yield and the range of the phase of a phase tuning section with yield more than 40% decrease as the facet reflectivity increases irrespective of coupling strength. As the coupling strength increases, the variation of yield for the variation of the phase of a phase tuning section increases and the variation of the phase of a phase tuning section with the maximum yield for the variation of the reflectivity of both facets decreases. The yield characteristics of the cases with the coupling strengths of 2 and 3 are better than those with the coupling strengths of 1.2 and 4.

References

  1. M. Mohrle, B. Sartorius, C. Bornholdt, S. Bauer, O. Brox, A. Sigmund, R. Steingruber, M. Radziunas, and H.-J. Wunsche, 'Detuned grating multisection-RW-DFB lasers for high-speed optical signal processing,' IEEE J. Select. Topics on Quantum Electron., vol. 7, no. 2, pp. 217-223, 2001 https://doi.org/10.1109/2944.954133
  2. R.-P. Braun, G. Grosskopf, H. Heidrich, C. V. Helmolt, R. Kaiser, K. Kruger, U. Kruger, D. Rohde, F. Schmidt, R. Stenzel, and D. Trommer, 'Optical microwave generation and transmission experiments in the 12- and 60-GHz region for wireless communications,' IEEE Trans. Microwave Theory Tech., vol. 46, no. 4, pp. 320-330, 1998 https://doi.org/10.1109/22.664133
  3. M. Saruwatari, 'All-optical signal processing for terabit/second optical transmission,' IEEE J. Select. Topics on Quantum Electron., vol. 6, no. 6, pp. 1363-1374, 2000 https://doi.org/10.1109/2944.902190
  4. M. Al-Mumin, X. Wang, W. Mao, S. A. Pappert, and G. Li, 'Optical generation and sideband injection locking of tunable 11-120 GHz microwave/millimeter signals,' Electron. Lett., vol. 36, no. 18, pp. 1547-1548, 2000 https://doi.org/10.1049/el:20000050
  5. H.-J. Wünsche, M. Radziunas, S. Bauer, O. Brox, and B. Sartorius, 'Modeling of mode control and noise in self-pulsating PhaseCOMB lasers,' IEEE. J. Select. Topics Quantum Electron., vol. 9, no. 3, pp. 857-864, 2003 https://doi.org/10.1109/JSTQE.2003.818854
  6. J. Carroll, J. Whiteaway, and D. Plumb, 'Distributed feedback semiconductor lasers', London: SPIE Optical Engineering Press, 1998
  7. 김부균, 김태영, 김상택, 김선호, 박경현, '매우 넓은 영역의 Self-Pulsation 주파수와 높은 변조지수를 가지는 다중 영역 복소 결합 DFB 레이저,' 한국광학회지, vol. 17, no. 2, pp. 191-197, 2006 https://doi.org/10.3807/KJOP.2006.17.2.191
  8. 김상택, 전재두, 김부균, 'Index-coupled DFB 레이저의 여러 가지 양 단면 반사율 조합에 따른 문턱 전류 이상에서 단일 모드 수율 해석,' 한국광학회지, vol. 14, no. 3, pp. 298-305, 2003