Optical device incorporating a tilted bragg grating

Details Optical device incorporating a tilted bragg grating Optical device incorporating a tilted bragg grating

G - Physics

01

J

G01J 3/18 (2006.01) G01J 9/00 (2006.01)

Patent

CA 2526604

The invention relates to an optical waveguide device for monitoring a characteristics of light, e.g. a wavelength. The device incorporates a waveguide, such as an optical fiber, with an embedded tilted Bragg grating operating in a regime of wavelength detuning. The grating is designed to disperse light azimuthally in two or more different directions about the fiber axis, said directions changing with wavelength. A photodetector array is provided for detecting the azimuthal distribution of light. A processor coupled to the photodetector array determines wavelength information from the detected azimuthal distribution of the out- coupled light.

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