10 April 1996 Power penalty due to timing jitter for lasers modulated without prebias
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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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Niloy K. Dutta, "Power penalty due to timing jitter for lasers modulated without prebias", Proc. SPIE 2683, Fabrication, Testing, and Reliability of Semiconductor Lasers, (10 April 1996); doi: 10.1117/12.237677; https://doi.org/10.1117/12.237677
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