Compensation apparatus and method utilising sampled bragg...

Details Compensation apparatus and method utilising sampled bragg... Compensation apparatus and method utilising sampled bragg...

H - Electricity

04

B

H04B 10/18 (2006.01) G02B 5/18 (2006.01) G02B 6/12 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2389445

Dispersion compensation devices are described which comprise waveguides including sampled Bragg gratings which exhibit comb-like reflectance characteristics. The profile of effective refractive index along the length of the grating is controlled to adjust the position of the teeth and/or to control the dispersion exhibited by the device (i.e. to control the chirp of the grating). The devices can thus be used to provide dispersion compensation to any one of a number of wavelength channels in a WDM system. In preferred arrangements, the effective refractive index distribution is set by a applying a temperature distribution along the length of the grating, or by setting an applied electric field,

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