Multi-transverse mode operation in vertical-cavity surface-emitting lasers:: effects of wideband modelling on spectral characteristics and noise

被引:1
作者
Sabugo-Luis, J [1 ]
España-Boquera, C [1 ]
机构
[1] Univ Malaga, ETSI Telecomun, Dept Ingn Comun, E-29071 Malaga, Spain
关键词
ARMA filters; transversal modes; VCSEL;
D O I
10.1007/s11082-006-0026-5
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A dynamic model for the vertical-cavity surface-emitting laser aimed to study the precise oscillation frequencies of the transverse modes is presented. The model performs the computation of the longitudinal distribution of the field inside the laser cavity, to take account of distributed boundary conditions at the Bragg reflectors. The latter are approximated by means of autoregressive moving-average (ARMA) digital filters, in order to reduce the computational load without loss of precision in wideband scenarios. With the aid of the developed model, a detailed analysis of the frequency and relative intensity noise spectra is carried out, thus allowing to evaluate the spectral quality of the laser emission. Particularly, the results reveal that each of the transverse modes oscillates with a frequency detuning from the central design wavelength, which is in good agreement with experimental observation.
引用
收藏
页码:583 / 603
页数:21
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