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Proceedings Paper

Manufacturing of lasers for DWDM systems
Author(s): Kevin Thomas Campbell; Alexander J. Robertson; Steven J. Wetzel
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Paper Abstract

The evolution of dense wavelength division multiplexing (DWDM) has allowed service provides a convenient and cost effective method to dramatically increase transmission capacity over existing and new fiber network systems. As the demand for bandwidth continues to increase, systems designers are responding by increasing both the number of channels and the data rates. This trend has placed considerable pressure on many of the underlying system components. One component that has been particularly challenged by this trend is the manufacture of semiconductor lasers. This paper reviews the technical and logistical challenges faced in the high volume manufacture of lasers to support DWDM systems. As the product portfolio continues to expand, precise execution and team work among multiple organizations is required to assure reliable shipping performance. Production scheduling and manufacturing operations must work closely to continuously re-prioritize the work in process in response to constantly changing channel demand and yield fluctuations. Wavelength prediction models must be developed that correlate in-process parameters to final device wavelength. These models are then applied to both in-process specification targeting and inventory management. Once the in-process specifications are properly targeted, the challenge moves to the fabrication processes, where processes are pushed to the limits of their control. Underpinning the entire effort must be an information management system in which parametric data is collected, wavelength prediction models are executed, and work in process inventory is controlled with respect to the final output volume and wavelength distribution.

Paper Details

Date Published: 12 November 1999
PDF: 10 pages
Proc. SPIE 3896, Design, Fabrication, and Characterization of Photonic Devices, (12 November 1999); doi: 10.1117/12.370381
Show Author Affiliations
Kevin Thomas Campbell, Lucent Technologies/Bell Labs. (United States)
Alexander J. Robertson, Lucent Technologies/Bell Labs. (United States)
Steven J. Wetzel, Lucent Technologies/Bell Labs. (United States)


Published in SPIE Proceedings Vol. 3896:
Design, Fabrication, and Characterization of Photonic Devices

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