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United States

Charlier J.-C.,BeamExpress SA
Lightwave | Year: 2011

Long-wavelength vertical cavity surface-emitting lasers (VCSEL) are emerging as an attractive alternative to conventional lasers for high-speed applications such as 40-Gigabit Ethernet (GbE) and 100-GbE single-mode optical interfaces specified in the IEEE 802.3ba 2010 standard. VCSELs emitting in the 1270-1330-nm and 1500-1600-nm wavelength ranges are identified as alternatives to edge-emitting lasers because of their inherent low power consumption and high efficiency coupling into singlemode fiber. For next-generation 40GBase-LR4, the use of singlemode VCSELs and low power consuming VCSEL drivers result in more than 40% power consumption savings, reducing 40-GbE optical transceiver power dissipation significantly below today's 3.5-W barrier. Long-wavelength VCSELs are well positioned to address a new 100G MSA, as they would enable a drastic reduction in overall power consumption and the use of high-density packaging.

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