Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-03-27
2007-03-27
Kianni, Kaveh (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S027000, C385S028000
Reexamination Certificate
active
10823191
ABSTRACT:
Wavelength tunable light sources and methods of operating the same are described. In one aspect, a wavelength tunable light source includes a resonant light path, an optical gain medium, an optical grating, a first acousto-optic deflector, and a second acousto-optic deflector. In another aspect, a light source has a resonant light path containing first and second acousto-optic devices for tuning an output light beam over a specified frequency range with an output wavelength profile. The first acousto-optic device is driven with a first signal having a first time-varying frequency profile. The second acousto-optic device is driven with a second signal having a second time-varying frequency profile, wherein the second time-varying frequency profile differs from the first time-varying frequency profile by an amount substantially proportional to a time rate is of change of the output wavelength profile. In this way, the output light beam is tunable over the specified frequency range without observable hopping between longitudinal modes.
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Kourogi, M. et al., “Continuous Tuning of an Electrically Tunable External-Cavity Semiconductor Laser”, Optics Letters, Optical Society of America, vol. 25, No. 16, Aug. 15, 2000, pp. 1165-1167.
Kourogi, M. et al., “Continuous Tuning of an Electrically Tunable External-Cavity Semiconductor Laser” Optics Letters, vol. 25, No. 16, Aug. 15, 2000, pp. 1165-1167.
Owen Geraint
Trutna, Jr. William R.
Agilent Technologies
Kianni Kaveh
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