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AssigneeElectrophotonics Corporation
InventorsA. Tino Alavie, Shangyuan Huang, Michael J. LeBlanc, Robert Maaskant, Raymond M. Measures, Myo Myint Ohn
Estimating the term…
The present invention provides a method and apparatus for controlling the detailed strain field imposed on a guided-wave Bragg grating. The spectral and temporal form of radiant energy traveling down optical fibers is important in many fields, including communications and sensing. The spectral distribution and center wavelength of short optical pulses is of particular importance. In the communication field the information carrying capacity of an optical fiber can be limited by the dispersion experienced by short pulses as they propagate along an optical fiber. Chirped fiber optic intracore Bragg gratings can be used to compensate for this dispersion. However, a grating with a different degree of chirp would be required for each particular communication system. This control of the intra-grating strain distribution allows the grating to be tuned over a broad spectral range or chirped in a manner that permits it to compensate for a wide range of dispersion with or without a shift in the grating center wavelength. In addition, precise control of the strain distribution along a grating can be used to manufacture a variety of spectral filters.
A method of controlling spectral profile and centre wavelength properties of an intrinsic guided-wave Bragg grating by;
A method of controlling a centre wavelength and spectral profile of an intrinsic guided-wave Bragg grating by imposition on said grating of a preselected strain distribution, comprising;
A method of controlling spectral profile and centre wavelength of an intrinsic guided-wave Bragg grating by the imposition on said grating of a preselected temperature distribution along a length of said grating.
An apparatus for controlling a centre wavelength and a spectral profile of an intrinsic guided-wave Bragg grating, comprising;
An apparatus for controlling a centre wavelength and a spectral profile of an intrinsic guided-wave Bragg grating by control of strain distribution imposed on the grating, comprising;
Dependencies are inferred from the claim text.