Nonlinear interferometer for fiber optic dense wavelength division multiplexer utilizing a phase bias element to separate wavelengths in an optical signal
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United States of America Patent
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Jan 2, 2001
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N/A
app pub date -
Feb 10, 1999
filing date -
Feb 10, 1999
priority date (Note) -
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Abstract
A nonlinear interferometer wavelength separation mechanism for use in a dense wavelength division multiplexer is provided. The mechanism includes a first glass plate optically coupled to a second glass plate, forming a space therebetween; a mechanism for introducing a phase shift at least one channel of an optical signal; and a mechanism for broadening a pass band of the optical signal. The nonlinear interferometer of the present invention allows a dense wavelength division multiplexer to have an ease in alignment and a higher tolerance to drifts due to the increase in the width of the pass band. It also has the added ability of being passively stable to temperature.
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