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Recent advances in DFB lasers for ultradense WDM applications

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11 Author(s)
Funabashi, M. ; Yokohama R&D Labs., Furukawa Electr. Co. Ltd., Yokohama, Japan ; Nasu, H. ; Mukaihara, T. ; Kimoto, T.
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State-of-the-art distributed feedback (DFB) laser modules integrated with a wavelength monitor are presented that provide excellent wavelength stability. By adopting unique and compact configuration, wavelength deviations of as small as a few picometers have been achieved. The laser modules are improved also in the scope of high power, high reliability, and wavelength tunability. Reliability test results of the DFB laser diodes and modules confirm a sufficiently long lifetime of more than 25 years and a small wavelength drift of less than ±3 pm. The developed laser modules are fully applicable to ultradense wavelength-division multiplexing applications with the current narrowest channel spacing of 25 GHz.

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:10 ,  Issue: 2 )

Date of Publication:

March-April 2004

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