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Proceedings Paper

Power penalty due to timing jitter for lasers modulated without prebias
Author(s): Niloy K. Dutta
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Paper Abstract

For lasers modulated with a pseudo-random bit stream without prebias, the delay between the optical pulse and the current pulse depends on the number `0's preceding the current pulse (`1'). Since 1's and 0's occur `randomly' in a pseudo-random bit stream and the decision circuit is designed to start sampling at a given time, this effect results in a timing jitter. The jitter induced noise and the associated power penalty are calculated. The results suggest that the ratio of the modulation current to the threshold current of the laser should be > 25 to keep the power penalty below 1 dB at high data rates. Low threshold lasers operating without prebias are important for laser array based transmitters.

Paper Details

Date Published: 10 April 1996
PDF: 5 pages
Proc. SPIE 2683, Fabrication, Testing, and Reliability of Semiconductor Lasers, (10 April 1996); doi: 10.1117/12.237677
Show Author Affiliations
Niloy K. Dutta, AT&T Bell Labs. (United States)

Published in SPIE Proceedings Vol. 2683:
Fabrication, Testing, and Reliability of Semiconductor Lasers
Mahmoud Fallahi; S. C. Wang, Editor(s)

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