Wavelength stabilization
AssigneeVolcano Corporation
InventorDavid Welford
Life of this patent
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Abstract
Systems and methods of the invention generally relate to feedback loops for wavelength stabilization. According to certain aspects, a method of the invention includes filtering light through a tunable filter configured to deliver a target wavelength of light, measuring the wavelength of the filtered light, detecting a change between the target wavelength and the filtered wavelength, and adjusting the tunable filter based on the detected change so that the filtered wavelength matches the target wavelength.
Claims22
An optical feedback system, the system comprising:
- a gain medium;
- a tunable filter operably coupled to the gain medium to produce light of a target wavelength;
- a wavelength measuring module coupled to the filter to measure the wavelength of output light and to detect a difference between an output wavelength and the target wavelength;
- and
- a controller operably associated with the wavelength measuring module and the tunable filter for adjusting the output wavelength in response to fluctuations between the output wavelength and the target wavelength by sending a signal directly to said tunable filter.
A method for providing an optical system with a stabilized light source, the method comprising
- filtering light through a tunable filter configured to deliver a target wavelength of light;
- measuring the wavelength of the filtered light;
- detecting a change between the target wavelength and the filtered wavelength;
- and
- adjusting the tunable filter based on the detected change so that the filtered wavelength matches the target wavelength.
A method for providing an optical system with a stabilized light source, the method comprising
- driving a voltage applied to the optical system at a certain frequency, wherein the frequency matches the natural frequency of the optical system.
Dependencies are inferred from the claim text.