Characterization of Turn-On Time Delay in a Fiber Grating Fabry–Perot Lasers

• Main Authors: Hisham, H.K., Mahdiraji, Ghafour Amouzad, Abas, A.F., Mahdi, M.A., Adikan, Faisal Rafiq Mahamd
• Format: Article
• Language: English
• Published: Institute of Electrical and Electronics Engineers (IEEE) 2012
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.um.edu.my/4643/1/Hisham-2012-Characterization_of.pdf; http://eprints.um.edu.my/4643/; https://doi.org/10.1109/JPHOT.2012.2214207

In this paper, turn-on time delay characteristics of a fiber grating Fabry-Perot (FGFP) laser are numerically investigated by considering all the carrier recombination rate (CRR) R(N) coefficients (nonradiative, A(nr); radiative, B; and Auger coefficient, C). The results show that the turn-on time delay significantly reduces by increasing the injection current (I-inj) and/or the initial value of carrier density (N-i). Meanwhile, the turn-on time delay increases by increasing the CRR coefficients. However, its effect can be minimized by increasing I-inj and/or N-i. In addition, the turn-on time delay can be reduced by increasing the external optical feedback (OFB) level. Moreover, it is shown that the optimum external-cavity length (L-ext) is 3.1 cm. Furthermore, an antireflection (AR) coating reflectivity value of 1 X 10(-2) is sufficient for the laser to operate at good turn-on time delay and low fabrication complexity. The obtained results can provide an important idea for the practical fabrication of the FGFP laser used in the dense wavelength-division multiplexing (DWDM) systems and optical access networks.