1.3-μm, 4 × 25-Gbit/s, EADFB laser array module with large-output-power and low-driving-voltage for energy-efficient 100GbE transmitter

Takeshi Fujisawa, Shigeru Kanazawa, Kiyoto Takahata, Wataru Kobayashi, Takashi Tadokoro, Hiroyuki Ishii, Fumiyoshi Kano

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

A 1.3-μm, 4 × 25-Gbit/s, EADFB laser array module with large output power and low driving voltage is developed for 100GbE. A novel rear grating DFB laser is introduced to increase the output power of the laser while keeping the single mode lasing, which is desirable for a monolithic integration. Also, InGaAlAs-based electroabsorption modulators make very-low-driving-voltage operation possible due to their steep extinction curves. With the module, very clear 25-Gbit/s eye openings are obtained for four wavelengths with the driving voltage of only 0.5 V while securing the dynamic extinction ratio required by the system. These results indicate that the presented module is a promising candidate for energyefficient future 100GbE transmitter.

Original languageEnglish
Pages (from-to)614-620
Number of pages7
JournalOptics Express
Volume20
Issue number1
DOIs
Publication statusPublished - 2012 Jan 2

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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