Power penalty due to timing jitter for lasers modulated without prebias

Niloy K. Dutta

doi:10.1117/12.237677

10 April 1996 Power penalty due to timing jitter for lasers modulated without prebias

Niloy K. Dutta

Proceedings Volume 2683, Fabrication, Testing, and Reliability of Semiconductor Lasers; (1996) https://doi.org/10.1117/12.237677
Event: Photonics West '96, 1996, San Jose, CA, United States

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.

Citation Download Citation

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); https://doi.org/10.1117/12.237677

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