Precise measurement of semiconductor laser chirp using effect of propagation in dispersive fiber and application to simulation of transmission through fiber gratings

Measurements of small-signal intensity modulation from direct-modulated distributed feedback (DFB) semiconductor lasers after propagation in dispersive fiber have previously been used to extract intrinsic laser chirp parameters such as linewidth enhancement factor and crossover frequency. Here, we demonstrate that the simple rate equations do not satisfactorily account for the frequency response of real DFB lasers and describe some experimental techniques that conveniently determiner the precise laser chirp. Implications for simulation of high-speed lightwave systems are also considered.

[1]  Geert Morthier,et al.  CLADISS-a longitudinal multimode model for the analysis of the static, dynamic, and stochastic behavior of diode lasers with distributed feedback , 1990 .

[2]  R. Baets,et al.  Analysis of the carrier-induced FM response of DFB lasers: theoretical and experimental case studies , 1989 .

[3]  A. Yariv,et al.  Effect of transmission through fiber gratings on semiconductor laser intensity noise , 1997 .

[4]  A. Royset,et al.  Measurement of laser parameters for simulation of high-speed fiberoptic systems , 1996 .

[5]  T. Brown,et al.  Frequency dependence of the chirp factor in 1.55 mu m distributed feedback semiconductor lasers , 1992, IEEE Photonics Technology Letters.

[6]  A. Royset,et al.  Use of dispersive optical fibre for characterisation of chirp in semiconductor lasers , 1994 .

[7]  B. Franz,et al.  FM response of quantum-well lasers taking into account carrier transport effects , 1995, IEEE Photonics Technology Letters.

[8]  Richard Schatz.  Dynamics of spatial hole burning effects in DFB lasers , 1995 .

[9]  J. Cartledge,et al.  Extraction of DFB laser rate equation parameters for system simulation purposes , 1996, Conference Proceedings LEOS'96 9th Annual Meeting IEEE Lasers and Electro-Optics Society.

[10]  B. Wedding.  Analysis of fibre transfer function and determination of receiver frequency response for dispersion supported transmission , 1994 .

[11]  A. Yariv,et al.  Improved laser modulation response by frequency modulation to amplitude modulation conversion in transmission through a fiber grating , 1997 .

[12]  G. Morthier.  An accurate rate-equation description for DFB lasers and some interesting solutions , 1997 .

[13]  J. Kinoshita,et al.  Transient chirping in distributed-feedback (DFB) lasers: effect of spatial hole-burning along the laser axis , 1988 .

[14]  Xun Li,et al.  Analytical formulas for modulation responses of semiconductor DFB lasers , 1995 .

[15]  J. Cartledge,et al.  On using fiber transfer functions to characterize laser chirp and fiber dispersion , 1995, IEEE Photonics Technology Letters.

[16]  T. Koch,et al.  Effect of nonlinear gain reduction on semiconductor laser wavelength chirping , 1986 .