Optical device incorporating a tilted bragg grating

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

2007-07-17

2007-07-17

Kim, Ellen E. (Department: 2874)

Optical waveguides

Integrated optical circuit

C385S037000

Reexamination Certificate

active

11272871

ABSTRACT:
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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