H. Soda, Y. Kotaki, H. Sudo, H. Ishikawa, S. Yamakosbi, H. Imai, "Stability in single longitudinal mode operation in
GaInAsPhP phase adjusted DFB lasers," IEEE J. Quantum Electron. QE-23, 804-814 (1987).

J. E. A. Whiteaway, G. H. B. Thompson, A. J. Collar, C. J. Armistead, "The design and assessment of ${\lambda / 4}$ phase-shift DFB laser structure," IEEE J. Quantum Electron. 25, 1761-1779 (1989).

L. M. Zhang, S. F. Yu, M. Nowell, D. D. Marcenac, J. E. Carroll, "Dynamic analysis of radiation and side mode
suppression in second order DFB lasers using time-domain large
signal traveling wave model," IEEE J. Quantum Electron. 30, 1389-1395 (1994).

A. J. Lowery, A. Keating, C. N. Murtonen, "Modeling the static and dynamic behavior of
quarter-wave-shifted DFB lasers," IEEE J. Quantum Electron. 28, 1874-1883 (1992).

W. Li, W.-P. Huang, X. Li, J. Hong, "Multiwavelength gain-coupled DFB laser cascade: Design
modeling and simulation," IEEE J. Quantum Electron. 36, 1110-1116 (2000).

Y. Xi, W.-P. Huang, X. Li, "High-order split-step schemes for time-dependent
coupled-wave equations," IEEE J. Quantum Electron. 43, 419-425 (2007).

W.-P. Huang, X. Li, T. Makino, "Analytical formulas for modulation responses of
semiconductor DFB lasers," IEEE J. Quantum Electron. 31, 842-851 (1995).

X. Li, W.-P. Huang, "Simulation of DFB semiconductor lasers incorporating
thermal effects," IEEE J. Quantum Electron. 31, 1846-1855 (1995).

R. S. Tucker, D. J. Pope, "Circuit modeling of the effect of diffusion on damping
in a narrow-stripe semiconductor laser," IEEE J. Quantum Electron. QE-19, 1179-1183 (1983).

J. Kinoshita, K. Matsumoto, "Transient chirping in distributed feedback lasers:
Effect of spatial hole-burning along the laser axis," IEEE J. Quantum Electron. 24, 2160-2169 (1988).

J. Kinoshita, "Modeling of high-speed DFB lasers considering the
spatial holeburning effect using three rate equations," IEEE J. Quantum Electron. 30, 929-938 (1994).

T. Yamanaka, S. Seki, K. Yokoyama, "Numerical analysis of static wavelength shift for DFB
lasers with longitudinal mode spatial hole burning," IEEE Photon. Technol. Lett. 3, 610-612 (1991).

C. Y. Kuo, M. S. Lin, S. J. Wang, D. A. Ackerman, L. J. P. Ketelsen, "Static and dynamic characteristics of DFB lasers with
longitudinal non-uniformity," IEEE Photon. Technol. Lett. 2, 461-463 (1990).