Spectrally resolved fast monitor

Details Spectrally resolved fast monitor Spectrally resolved fast monitor

H - Electricity

04

B

H04B 10/02 (2006.01) G02B 6/34 (2006.01) H04B 10/08 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2522389

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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