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

Author

Hisham, H.K. ; Mahdiraji, G.A. ; Abas, A.F. ; Mahdi, M.A. ; Adikan, F. R Mahamd

Author_Institution

Wireless & Photonic Networks Res. Centre, Univ. Putra Malaysia, Serdang, Malaysia

Volume

4

Issue

5

fYear

2012

Firstpage

1662

Lastpage

1678

Abstract

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 × 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.

Keywords

Fabry-Perot resonators; antireflection coatings; diffraction gratings; laser cavity resonators; optical fibre subscriber loops; semiconductor lasers; wavelength division multiplexing; Auger coefficient; B coefficient; FGFP laser; antireflection coating reflectivity; carrier density; carrier recombination rate; dense wavelength-division multiplexing; external optical feedback level; fiber grating Fabry-Perot lasers; injection current; nonradiative coefficient; optical access networks; optimum external-cavity length; turn-on time delay; Cavity resonators; Charge carrier density; Delay effects; Fiber lasers; Mathematical model; Semiconductor lasers; Wavelength division multiplexing; External-cavity semiconductor lasers; fiber Bragg grating (FBG); turn-on time delay;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2012.2214207

Filename

6275463