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

doi:10.1109/JLT.2016.2520942

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 journal › Article › peer-review

25 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 language	English
Article number	7389962
Pages (from-to)	3646-3652
Number of pages	7
Journal	Journal of Lightwave Technology
Volume	34
Issue number	15
DOIs	https://doi.org/10.1109/JLT.2016.2520942
Publication status	Published - 2016 Aug 1
Externally published	Yes

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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30-km Error-Free Transmission of Directly Modulated DFB Laser Array Transmitter Optical Sub-Assembly for 100-Gb Application. / Kanazawa, Shigeru; Kobayashi, Wataru; Ueda, Yuta; Fujisawa, Takeshi; Takahata, Kiyoto; Ohno, Tetsuichiro; Yoshimatsu, Toshihide; Ishii, Hiroyuki; Sanjoh, Hiroaki.

In: Journal of Lightwave Technology, Vol. 34, No. 15, 7389962, 01.08.2016, p. 3646-3652.

Research output: Contribution to journal › Article › peer-review

Kanazawa, Shigeru ; Kobayashi, Wataru ; Ueda, Yuta ; Fujisawa, Takeshi ; Takahata, Kiyoto ; Ohno, Tetsuichiro ; Yoshimatsu, Toshihide ; Ishii, Hiroyuki ; Sanjoh, Hiroaki. / 30-km Error-Free Transmission of Directly Modulated DFB Laser Array Transmitter Optical Sub-Assembly for 100-Gb Application. In: Journal of Lightwave Technology. 2016 ; Vol. 34, No. 15. pp. 3646-3652.

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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.",

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