Tunable optical add/drop multiplexer with multi-function optical amplifiers
AssigneeMassachusetts Institute of Technology
InventorsLeslie Kolodziejski, Gale S. Petrich
Life of this patent
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Abstract
A photonic circuit includes a tunable drop filter arrangement that includes a plurality of resonators. The drop filter arrangement is tuned to remove a selected frequency from an input data stream from a waveguide. A wavelength sensor coupled to the drop filter to monitor the selected frequency to which the drop filter arrangement has been tuned. A tunable laser presents a new signal of a defined frequency indicative of a signal to be added to the input data stream. A modulator coupled to the tunable laser for receiving the new signal and forming a modulated signal. An add filter arrangement coupled to the modulator for receiving the modulated signal and adding the modulated signal to the data stream.
Claims27
A photonic circuit comprising:
- a tunable drop filter arrangement that includes a plurality of resonators, said drop filter arrangement removing a dropped resonant frequency from an input data stream;
- a detector is coupled to said tunable drop filter to detect all dropped resonant frequencies of said tunable drop filter;
- and
- a wavelength sensor coupled to said drop filter to monitor the dropped resonant frequency associated with said tunable drop filter arrangement.
A device for operating on an optical signal comprising:
- a tunable drop filter arrangement that includes a plurality of resonators, said drop filter arrangement removing a frequency from an input data stream;
- a detector is coupled to said tunable drop filter to detect all dropped resonant frequencies of said tunable drop filter;
- and
- a wavelength sensor coupled to said drop filter to monitor the selected frequency to which the tunable drop filter arrangement has been tuned.
A method of dropping a resonant frequency from an input stream using a photonic circuit, said method comprising:
- providing a tunable drop filter arrangement that includes a plurality of resonators, said drop filter arrangement dropping a dropped resonant frequency from said input data stream;
- providing a detector is coupled to said tunable drop filter to detect all dropped resonant frequencies of said tunable drop filter
- providing a wavelength sensor that is coupled to said drop filter so that it monitors the dropped resonant frequency associated with said tunable drop filter.
Dependencies are inferred from the claim text.