Comparison of different DFB laser models within the European COST 240 collaboration

Morthier, Geert; Baets, Roel; Tsang, C.F.; Caroll, John E.; Wenzel, H.; Mecozzi, Antonio; Sapia, A.; Correc, P.; Hansmann, S.; Burkhardt, Holger; Bonello, R.; Montrosset, Ivo; Lassen, H.E.; Olesen, H.; Schatz, Richard; Bissessur, H.; Vey, J-L; Duan, Guang‐Hua

doi:10.1364/ipr.1993.iwb4

Cited by 3 publications

(5 citation statements)

References 7 publications

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“…Nevertheless, it should be stressed that the laser rate Equations (2) assume an uniform photon and carrier distribution inside the laser cavity, therefore excluding from our analysis, laser structures with high spatial inhomogeneities due to longitudinal carrier spatial-hole burning (see e.g. [17], p. 117, [21]), or laser structures where the transient time of the optical waveguide within the laser cavity is important to their modulation characteristics, like mode-locked lasers (see e.g. [19], pp.…”

Section: Laser Modelingmentioning

confidence: 99%

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Improved model to discriminate adiabatic and transient chirps in directly modulated semiconductor lasers

Morgado

Cartaxo

2009

Journal of Modern Optics

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An improved model to discriminate the adiabatic and transient frequency chirping in directly modulated lasers (DMLs) is proposed. Such a model is very useful for evaluating per se the effects of modulation-induced adiabatic and transient frequency chirping of DMLs on optical communication system performance. It is shown that the mostly used model, relating the frequency deviation to the optical power waveform at laser output, can lead to remarkable inaccuracy in performance evaluation of directly-modulated (DM) multi-span systems operating at very high bit rates, such as 40 Gbit s À1 , by under-estimating the DML transient chirp. Using numerical simulation, a good agreement of the frequency chirping predicted by the proposed model with the one estimated by the laser rate equations is shown. Its good accuracy on assessing the performance of a DM multi-span system operating at 40 Gbit s À1 is also reported.

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Section: Laser Modelingmentioning

confidence: 99%

“…Substituting (20) in (21) and after some algebraic manipulation, it results in the frequency deviation…”

Section: Appendix 1 Derivation Of the Proposed Laser Frequency Deviamentioning

confidence: 99%

Improved model to discriminate adiabatic and transient chirps in directly modulated semiconductor lasers

Morgado

Cartaxo

2009

Journal of Modern Optics

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“…The governing equations for the envelopes and of the forward and backward traveling optical fields are (1) where is the group velocity, is the optical confinement factor, is the optical gain, is the optical loss, and is the detuning factor, respectively. The coupling coefficients due to index/gain/loss gratings are and , which may be complex.…”

Section: A Traveling-wave Model For the Active Sectionsmentioning

confidence: 99%

“…In the investigation of this kind of photonics circuit, numerical simulation and modeling is playing a more and more important role. In the modeling and simulation of laser diodes, there have been two different formalisms, namely, the standing-wave approach [1]- [4] and the traveling-wave approach [2], [5]- [7]. The standing-wave approach is based on the assumption that the temporal and the spatial dependence of field distributions of the cavity modes are separable.…”

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confidence: 99%

Digital filter approach for Simulation of a complex integrated laser diode based on the traveling-wave model

Wei

Huang

2004

IEEE J. Quantum Electron.

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Abstract-The traveling-wave model is commonly used in the simulation of semiconductor laser diodes and photonic integrated circuits. When the laser diode is cascaded with other passive elements of relatively large optical dimension or complicated structure such as a sophisticated distributed Bragg reflector section, the conventional approach by tracing the forward and the backward traveling waveform along the entire passive section in the time domain becomes time consuming or technically impossible. To overcome this difficulty, a split-step approach is proposed in this study. Since the spectral characteristics of the passive sections are known from analytical/numerical calculations or experimental measurement, the effective time-domain digital filters are introduced for the passive components. Therefore, in the simulation, the laser diode part is still modeled by the traveling-wave approach, but the digital filters are used to model the passive components butted at the end of the active part, which interact with the optical field of the laser diode at the interface.

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“…The computer model used for the simulations is based on a combination of a transfer matrix algorithm with a rate equation analysis and takes into account spatial and spectral hole burning as well as the inhomogeneous current injection resulting from the axially varying Fermi voltage [12]- [14]. The set of parameters needed as input for the program is extracted from a detailed comparison with the experiment, and the complex coupling coefficient of the antiphase Bragg grating is assumed to be constant, thus neglecting saturation effects in the absorbing layer of the loss-coupled DFB lasers.…”

Section: Modelingmentioning

confidence: 99%

Properties of loss-coupled distributed feedback laser arrays for wavelength division multiplexing systems

Hansmann

Dahlhof

Kempf

et al. 1997

J. Lightwave Technol.

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The characteristics of loss-coupled distributed feedback (DFB) semiconductor laser arrays are investigated both theoretically and experimentally. Using simulations based on a transfer matrix method, the strong influence of the residual facet reflectivity on the singlemode yield and the statistical fluctuation of the emission wavelength for as-cleaved and AR/HR coated loss-coupled DFB lasers is pointed out and compared to purely index-coupled /4 phase-shifted devices. Experimental results and the fabrication techniques are given for loss-coupled 1.55 m InGaAs/InGaAlAs/InP DFB laser arrays with four channels and integrated striped thin-film heaters, which were successfully used for fine tuning the channel spacings.Index Terms-Distributed feedback lasers, quantum-well lasers, semiconductor device modeling, semiconductor laser arrays, wavelength division multiplexing.

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Comparison of different DFB laser models within the European COST 240 collaboration

Cited by 3 publications

References 7 publications

Improved model to discriminate adiabatic and transient chirps in directly modulated semiconductor lasers

Improved model to discriminate adiabatic and transient chirps in directly modulated semiconductor lasers

Digital filter approach for Simulation of a complex integrated laser diode based on the traveling-wave model

Properties of loss-coupled distributed feedback laser arrays for wavelength division multiplexing systems

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