Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2005-08-30
2005-08-30
Healy, Brian M. (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S024000, C385S014000, C385S031000, C385S088000, C398S079000, C398S082000, C398S087000
Reexamination Certificate
active
06937795
ABSTRACT:
In an optical device, each of a plurality of radiation sources generates a separate different wavelength output signal to a wavelength locking device wherein a grating device receives the separate wavelength output signals from the plurality of radiation sources. The grating device generates a multiplexed wavelength output signal at a zero diffraction order output port thereof, and resolves separate symmetric wavelength−δ and wavelength−δ output signals at separate predetermined locations within at least one non-zero diffraction order thereof for each of the radiation sources. Each of a plurality of radiation detectors is coupled to receive a separate one of the symmetric wavelength−δ and wavelength−δ output signals and generate an output signal representing the magnitude of the received wavelength output signal. A control device is responsive to output signals from each pair of radiation detectors coupled to receive the separate symmetric wavelength+δ and wavelength−δ output signals from a specified predetermined radiation source for generating an output control signal appropriate to that radiation source for locking the wavelength thereof.
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Book entitled “Introduction To Optics”, by Frank L. Pedrotti and Leno S. Pedrotti, Prentice Hall, 1987, pp. 415 and 421.
Khazaei Hamid R.
Squires Emily M.
Healy Brian M.
Optovia Corporation
Ostroff Irwin
Pfeifle Erwin W.
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