30-km Error-Free Transmission of Directly Modulated DFB Laser Array Transmitter Optical Sub-Assembly for 100-Gb Application

Shigeru Kanazawa, Wataru Kobayashi, Yuta Ueda, Takeshi Fujisawa, Kiyoto Takahata, Tetsuichiro Ohno, Toshihide Yoshimatsu, Hiroyuki Ishii, Hiroaki Sanjoh

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We fabricated the first compact 100-gigabit Ethernet (100GbE) transmitter optical sub-assembly (TOSA) using a directly modulated DFB laser (DML) array monolithically integrated with an optical multiplexer. Specially designed InGaAlAs/InGaAlAs multiple quantum wells make it possible to obtain a large gain in the 1295-1310-nm wavelength range and to operate at a high temperature of 55 °C. The four-channel DML array chip is only 2.0 mm × 2.4 mm in size, and the fabricated TOSA is only 7.2 mm (W) × 14.3 mm (L) × 6.5 mm (H), which fits a CFP2 or smaller 100-GbE transceiver. For all the lanes, the 3-dB bandwidths of the TOSA exceeded 17 GHz, and it could operate at 25.8 Gb/s. With 25.8-Gb/s × four-channel simultaneous operation, error-free transmissions over a 30-km single-mode fiber were demonstrated for all the lanes.

Original languageEnglish
Article number7389962
Pages (from-to)3646-3652
Number of pages7
JournalJournal of Lightwave Technology
Volume34
Issue number15
DOIs
Publication statusPublished - 2016 Aug 1
Externally publishedYes

Keywords

  • 100 gigabit Ethernet
  • directly modulated laser
  • photonic integrated circuits
  • semiconductor device packaging
  • semiconductor laser arrays
  • semiconductor lasers
  • TOSA

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Kanazawa, S., Kobayashi, W., Ueda, Y., Fujisawa, T., Takahata, K., Ohno, T., Yoshimatsu, T., Ishii, H., & Sanjoh, H. (2016). 30-km Error-Free Transmission of Directly Modulated DFB Laser Array Transmitter Optical Sub-Assembly for 100-Gb Application. Journal of Lightwave Technology, 34(15), 3646-3652. [7389962]. https://doi.org/10.1109/JLT.2016.2520942