Optical grating based multiplexer device with power tap capability
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United States of America Patent
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May 1, 2007
Grant Date -
Apr 28, 2005
app pub date -
Oct 22, 2003
filing date -
Oct 22, 2003
priority date (Note) -
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Abstract
In an optical grating device, a grating arrangement receives different wavelength output signals from a plurality of radiation sources at input ports thereof, and generates therefrom a multiplexed wavelength output signal at a zero diffraction order output port of the grating arrangement. Additionally, the gating arrangement generates at least one predetermined wavelength output signal at one of a group consisting of a separate predetermined location in an at least one of a symmetric non-zero diffraction order of the grating arrangement, within the grating arrangement itself, and a combination thereof. A separate power tap is coupled to detect the power of a separate one of the at least one predetermined wavelength output signal from the grating arrangement.
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