Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2008-09-09
2008-09-09
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
C359S337100
Reexamination Certificate
active
11243021
ABSTRACT:
A method and apparatus for monitoring spectral tilt uses an arrayed waveguide grating (AWG) to separate a multiplexed optical signal having a plurality of wavelength channels into a plurality of sub-bands, where each sub-band spans a different wavelength range and includes more than one wavelength channel. A photodetector array is provided to measure the optical power in each of the sub-bands, while control electronics calculate spectral tilt of the multiplexed optical signal using the measured optical power in each of the sub-bands. The spectral tilt monitor in accordance with the instant invention provides spectral resolution, increased monitoring speeds, and decreased manufacturing costs.
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Al-Salameh Daniel
Dougherty David J.
Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A. Attorneys
Hellner Mark
JDS Uniphase Corporation
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