Title :
Modelling of chirping laser diodes for microwave generation and transmission over dispersive fibres
Author :
Freude, W. ; Palai, P. ; Sukhoivanov, I.A.
Author_Institution :
Inst. fur Hochfrequenztech. und Quantenelektron., Karlsruhe Univ., Germany
Abstract :
For a sinusoidal modulation of the injection current we present optical and photocurrent spectra computed by a numerical large signal LD model, and compare the outcome to previous analytical and experimental results. We also treat successfully some cases of overmodulation, where temporarily the current falls below threshold. For lower modulation frequencies and below-threshold currents the optical power becomes significantly determined by spontaneous emission; in these cases our present deterministic model fails.
Keywords :
chirp modulation; microwave generation; microwave links; microwave photonics; optical communication equipment; optical fibre subscriber loops; optical harmonic generation; radio access networks; semiconductor device models; semiconductor lasers; Langevin forces; below-threshold currents; chirping laser diodes; dispersive fibres; injection current; microwave generation; microwave transmission; numerical large signal LD model; optical spectra; overmodulation; photocurrent spectra; photon number; sinusoidal modulation; spontaneous emission; Chirp modulation; Diode lasers; Frequency modulation; Microwave generation; Optical computing; Optical modulation; Photoconductivity; Signal analysis; Spontaneous emission; Stimulated emission;
Conference_Titel :
Microwave Photonics, 1998. MWP '98. International Topical Meeting on
Conference_Location :
Princeton, NJ, USA
Print_ISBN :
0-7803-4936-9
DOI :
10.1109/MWP.1998.745547
