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4 ,\times, 25 Gb/s Frequency-Modulated DBR Laser Array for 100-GbE 40-km Reach Application

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8 Author(s)

A monolithically integrated 100-Gb/s throughput (4 ,\times, 25 Gb/s) laser array has been developed that employs frequency-modulated distributed Bragg reflector lasers. An optical filter converts a frequency-modulated signal to an amplitude-modulated signal with a high contrast ratio in addition to reducing the lasing spectrum bandwidth. A clear eye opening after 40-km transmission was observed with a 25-Gb/s nonreturn-to-zero signal in the 1550-nm region.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 17 )