A compact EADFB laser array module for a future 100-gb/s ethernet transceiver

Shigeru Kanazawa*, Takeshi Fujisawa, Akira Ohki, Hiroyuki Ishii, Nobuhiro Nunoya, Yoshihiro Kawaguchi, Naoki Fujiwara, Kiyoto Takahata, Ryuzo Iga, Fumiyoshi Kano, Hiromi Oohashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


A compact electroabsorption modulators integrated distributed feedback (EADFB) laser array module has been developed for 100-Gb/s Ethernet. Four 25-Gb/s EADFB lasers and an optical multiplexer are monolithically integrated on one chip in an area of only 2mm × 2.6mm. As a result, a compact 12mm × 20mm EADFB laser array module is achieved. A bridge-type RF circuit board is employed to transmit high-frequency, 4 × 25-Gb/s, electrical signals effectively in a narrow package and improve the electrical/optical response of the module. The module has a 3-dB frequency bandwidth of 20 GHz for the four lanes assigned in 100-Gb/s Ethernet. Furthermore, the possibility of realizing low-driving voltage operation is investigated to reduce the power consumption of the module. An error-free transmission through 10km of single-mode fiber at 100 Gb/s with a modulation voltage of only 1 V is demonstrated.

Original languageEnglish
Article number12
Pages (from-to)1191-1197
Number of pages7
JournalIEEE Journal on Selected Topics in Quantum Electronics
Issue number5
Publication statusPublished - 2011
Externally publishedYes


  • 100-Gb Ethernet
  • Distributed feedback laser
  • EADFB laser array
  • InGaAlAs
  • electro-absorption modulator
  • photonic-integrated circuits

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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