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High-Speed EA-DFB Laser for 40-G and 100-Gbps
Shigeki MAKINO Kazunori SHINODA Takeshi KITATANI Hiroaki HAYASHI Takashi SHIOTA Shigehisa TANAKA Masahiro AOKI Noriko SASADA Kazuhiko NAOE
IEICE TRANSACTIONS on Electronics
Publication Date: 2009/07/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Recent Advances in Ultra-high-speed Photonic Devices for Next-generation Optical Fiber Communications)
electro absorption modulator, EA, DFB laser, uncooled, InGaAlAs, Ethernet, 40 Gbps, 100 Gbps,
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We have developed a high-speed electroabsorption modulator integrated distributed feedback (EA/DFB) lasers. Transmission performance over 10 km was investigated under 25 Gbps and 43 Gbps modulation. In addition, the feasibility of wide temperature range operation was also investigated. An uncooled EA/DFB laser can contribute to the realization of low-power-consumption, small-footprint and cost-effective transceiver module. In this study, we used the temperature-tolerant InGaAlAs materials in an EA modulator. A wide temperature ranged 12 km transmission with over 9.6 dB dynamic extinction ratio was demonstrated under 25 Gbps modulation. A 43 Gbps 10 km transmission was also demonstrated. The laser achieved a clear, opened eye diagram with a dynamic extinction ratio over 7 dB from 25 to 85. The modulated output power was more than +2.9 dBm even at 85. These devices are suitable for next-generation, high-speed network systems, such as 40 Gbps and 100 Gbps Ethernet.