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Frequency-locked 1.3- and 1.5-μm semiconductor lasers for lightwave systems applications

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1 Author(s)
Chung, Y.C. ; AT&T Bell Lab., Holmdel, NJ, USA

A simple technique for frequency-locking 1.3- and 1.5-μm lasers to an excited-state atomic transition of noble gases using the optogalvanic effect is described. Many of the atomic transitions useful for these spectral regions are tabulated. The performance of frequency-locked lasers under direct frequency modulation is analyzed. It is shown that neither the frequency stability nor the receiver sensitivity shows any serious degradation when a frequency-locked laser is used in a frequency shift keying (FSK) transmission experiment

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Lightwave Technology, Journal of  (Volume:8 ,  Issue: 6 )