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Suppression of laser frequency drifts caused by thermal transients in optical WDM packet switching systems

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2 Author(s)
Vicente de Vera, E.G. ; AT&T Bell Labs., Holmdel, NJ, USA ; Glance, B.

Frequency drifts caused by laser thermal transients have been identified as a major impairment in packet switching networks using multisection tunable lasers. They are induced by the heating changes caused by current steps used to switch the carrier frequency. A method to suppress this frequency drift in a FSK-WDM direct detection system through the use of a passive equalisation circuit is presented.

Published in:

Electronics Letters  (Volume:26 ,  Issue: 23 )