Injection locked Fabry-Perot laser diodes for WDM passive optical network spare function

In this paper, a protection scheme for transmitters in wavelength-division-multiplexing passive optical network (WDM-PON) has been proposed and demonstrated. If any downstream transmitter encounters problems at the central office (CO), the interrupted communication can be restored immediately by injecting a Fabry-Perot laser diode (FP-LD) with the upstream lightwave corresponding to the failure transmitter. Compared with the conventional methods, this proposed architecture provides a cost-effective and reliable protection scheme employing a common FP-LD. In the experiment, a 1 36 protection capability was implemented with a 2.5 Gbit/s downstream transmission capability. (C) 2009 Elsevier B.V. All rights reserved.

National Natural Science Foundation of China 60820106004 606060196077702960536010National Basic Research Program of China 2009AA03Z409 2006CB604902 2006CB302806 Important International Cooperation Projects 2006dfa11880 This work is supported in part by the National Natural Science Foundation of China under Grants 60820106004 60606019 60777029 and 60536010 and in part by the National Basic Research Program of China under Grants 2009AA03Z409 2006CB604902 and 2006CB302806 and by the Important International Cooperation Projects under Grants 2006dfa11880.