An improved expression for the time-bandwidth product (Delta t Delta f) of picosecond optical pulses from gain-switched semiconductor lasers was obtained by a series of numerical simulations based on rate equations without making any assumption for a particular pulse shape and chirp condition. The relation can be expressed by Delta t Delta f = 0.31 root 1 + (1.64 alpha)(2) as a function of the linewidth-enhancement factor alpha. The influence of the spontaneous emission factor beta on the relation is also examined.
机构:
PLESSEY RES CASWELL LTD, ALLEN CLARK RES CTR, TOWCESTER NN12 8EQ, NORTHANTS, ENGLANDPLESSEY RES CASWELL LTD, ALLEN CLARK RES CTR, TOWCESTER NN12 8EQ, NORTHANTS, ENGLAND
OSINSKI, M
;
BUUS, J
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PLESSEY RES CASWELL LTD, ALLEN CLARK RES CTR, TOWCESTER NN12 8EQ, NORTHANTS, ENGLANDPLESSEY RES CASWELL LTD, ALLEN CLARK RES CTR, TOWCESTER NN12 8EQ, NORTHANTS, ENGLAND
机构:
PLESSEY RES CASWELL LTD, ALLEN CLARK RES CTR, TOWCESTER NN12 8EQ, NORTHANTS, ENGLANDPLESSEY RES CASWELL LTD, ALLEN CLARK RES CTR, TOWCESTER NN12 8EQ, NORTHANTS, ENGLAND
OSINSKI, M
;
BUUS, J
论文数: 0引用数: 0
h-index: 0
机构:
PLESSEY RES CASWELL LTD, ALLEN CLARK RES CTR, TOWCESTER NN12 8EQ, NORTHANTS, ENGLANDPLESSEY RES CASWELL LTD, ALLEN CLARK RES CTR, TOWCESTER NN12 8EQ, NORTHANTS, ENGLAND