Multi-band wavelength dispersive device for use in dense wavelength division multiplexing (DWDM) networks
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United States of America Patent
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Dec 9, 2003
Grant Date -
Apr 18, 2002
app pub date -
May 14, 2001
filing date -
Apr 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Multiplexed grating and grating/prism devices are particularly suited to DWDM optical telecommunications networks, finding utility in optical spectrum analyzers (OSAs) and fiber multiplexer/demultiplexers. The invention may be used to address both single- and dual-band configurations through adjustment of the grating, detector array, and/or inclusion of a fiber-optic switch. As a dual-band OSA covering the C- and L-bands, a device according to the invention may be used to replace two separate OSAs like those currently in production, at only a modest increase in cost relative to a single-band OSA.
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