Bookham Develops Uncooled Directly Modulated Laser

Engineers from Bookham Technology and Cambridge University are developing a directly modulated DFB laser that combines ultrawide bandwidth with very high linearity over the wide temperature range of 25°C – 85°C, but without cooling. Key advantages of uncooled directly modulated lasers are that they are cheaper, more compact and more power efficient. Potential applications include direct transport of analog microwave/RF signals over fiber for in building distributed antenna systems in cellular networks and WLANs.
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